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Argo User's Manual Version 2.1

1. char HISTORY STEP N HISTORY STRING4 HISTORY STEP long name lt Step in data processing HISTORY STEP conventions lt Argo reference table 12 HISTORY STEP FillValue Char HISTORY SOFTWARE N HISTORY STRING4 HISTORY SOFTWARE long name lt Name of software which performed action HISTORY SOFTWARE conventions lt nstitution dependent HISTORY SOFTWARE FillValue Char HISTORY SOFTWARE RELEASE N HISTORY STRINGA HISTORY SOFTWARE RELEASE long name Version release of software which performed action HISTORY SOFTWARE RELEASE conv entions Institution dependent HISTORY_SOFTWARE_RELEASE Fill Value char HISTORY_REFERENCE N_HISTORY STRING64 HISTORY_REFERENCE long_name Reference of database HISTORY_REFERENCE conventions Institution dependent HISTORY_REFERENCE FillValue char HISTORY_DATE N_HISTORY DATE_TIME HISTORY_DATE long_name Date the history record was created HISTORY_DATE conventions YYYYMMDDHHMISS HISTORY DATE FillValue char HISTORY_ACTION N_HISTORY STRING64 HISTORY_ACTION long_name Action performed on data HISTORY_ACTION conventions Argo reference table 7 HISTORY ACTION FillValue Comment Institution that performed the action Institution codes are described in reference table 4 Example ME for MEDS Code of the step in data processing for this history record The step codes are described in r
2. lt PARAM gt _ADJUSTED_QC is mandatory When no adjustment is performed the FillValue is inserted lt PARAM gt ADJUSTED ERROR contains the error on the adjusted values of the parameter lt X gt this field is specified in the reference table 3 lt PARAM gt ADJUSTED ERROR is mandatory When no adjustment is performed the FillValue is inserted User s manual lt PARAM gt ADJUSTED ERROR units lt X gt lt PARAM gt ADJUSTED ERROR comment Contains the error on the adjusted values as determined by the delayed mode QC process lt PARAM gt ADJUSTED ERROR C format lt eX gt lt PARAM gt ADJUSTED ERROR FORTRAN for mat lt XZ lt PARAM gt ADJUSTED ERROR resolutions lt X gt 2 3 5 Cycle information from the float This section contains information on the cycles performed by the float Each field in this section has a N CYCLE dimension N CYCLE is the number of cycles performed by the float Definition Comment JULD ASCENT STAR double ULD ASCENT START N CYCLE Julian day UTC of the beginning of the ascending profile JULD ASCENT START long name lt Example Start date of the ascending profile 18833 8013889885 July 25 2001 19 14 00 JULD ASCENT START units lt days since 1950 01 01 00 00 00 UTC JULD ASCENT START conventions lt Relative julian days with decimal part as part of day JULD ASCENT START FillIValue lt 999999 JULD ASCENT STARJ Char date comes from the fl
3. December 30 2001 09 05 00 Unique identifier of the profile in the data centre Data centres may have different identifier schemes DC_REFERENCE is therefore not unique across data centres Degree of processing the data has passed through The data state indicator is described in the reference table 6 Indicates if the profile contains real time delayed mode or adjusted data R real time data D delayed mode data A real time data with adjusted values References of the instrument brand type serial number Example APEX SBE 259 Instrument type from WMO code table 1770 A subset of WMO table 1770 is documented in the reference table 8 Example 846 Webb Research float Seabird sensor User s manual SSS WMO UNST TYPE FillValue lt 5 lt JULD OC JULD LOCATION POSITION OC POSITIONING SYSTEM PROFILE lt PARAM gt OC double J ULD N PROF J ULD long name Julian day UTC of the station relative to REFERENCE DATE TIME JULD units days since 1950 01 01 00 00 00 UTC JULD conventions Relative julian days with decimal part as parts of day JULD _ FillValue 999999 char J ULD_QC N_PROF JULD_QC long_name Quality on Date and Time JULD OC conventions lt Argo reference table 2 JULD_QC _ FillValue double JULD LOCATION N PROF J ULD long name Julian day UTC of the location relative to REFERENCE_DATE_TIME JULD units days since
4. Instrument type from WMO code table 1770 A subset of WMO table 1770 is documented in the reference table 8 Example 831 Name of the system used to derive the float locations see reference table 9 Examples ARGOS User s manual Gc 24 2 3 4 Locations and measurements from the float This section contains locations for one Argo float It may also contain measurements performed along the trajectory Each field in this section has a N MEASUREMENT dimension N_MEASUREMENT is the number of locations or measurement received from the float When no parameter is measured along the trajectory N PARAM number of parameters and any field with a N PARAM dimension are removed from the file PARAM PARAM_QC PARAM_ADJUSTED PARAM_ADJUSTED_QC PARAM_ADJUSTED_ERROR and TRAJECTORY PARAMETERS The original data received from the float and examined by real time quality control should be placed in the lt PARAM gt and the QC flags set by the real time process should be placed in the lt PARAM gt OC field The values and flags in the lt PARAM gt fields should never be altered Each parameter can be adjusted In that case lt PARAM gt _ADJUSTED contains the adjusted values lt PARAM gt _ADJUSTED_QC contains the QC flags set by the delayed mode process and lt PARAM gt _ADJUSTED_ERROR contains the adjustment uncertainties A file with no adjusted data contains adjusted sections with fill values lt PARAM gt _ADJUSTED
5. 99999 f PLATFORM MODEL char PLATFORM MODEL STRING16 PLATFORM MODEL long name lt Model of the float PLATFORM MODEL FillValue PLATFORM MAKER char PLATFORM MAKER STRING256 PLATFORM MAKER long name lt The name of the manufacturer PLATFORM MAKER FillValue INST_REFERENCE char INST_REFERENCE STRING64 INST REFERENCE long name Instrument type INST REFERENCE conventions lt Brand type serial number INST REFERENCE FillValue WMO INST TYPE char WMO INST TYPE STRINGA WMO INST TYPE long name Coded instrument type WMO INST TYPE conventions lt Argo reference table WMO INST TYPE FillValue Argo data management Comment WMO float identifier WMO is the World Meteorological Organization This platform number is unigue Example 6900045 Transmission identifier of the float Comma separated list for multi beacon transmission Example 22507 the float is eguipped with one ARGOS beacon 22598 22768 the float is eguipped with 2 ARGOS beacons Name of the telecommunication system from reference table 10 Example ARGOS Program identifier of the telecommunication subscription Example 38511 is a program number for all the beacons of an ARGOS customer Freguency of transmission from the float Unit hertz Example 1 44 Repetition rate of the transmission system Unit second Example 40 for a repetition of messages every 40 seconds Po
6. DATA_TYPE comment Data type contained in the file DATA_TYPE _FillValue The list of acceptable data types is in the reference table 1 Example Argo trajectory FORMAT_VERSION char FORMAT_VERSION STRING4 File format version FORMAT_VERSION comment File format version Example 2 2 FORMAT_VERSION _ FillValue HANDBOOK_VERSION char HANDBOOK VERSION STRING4 Version number of the data handbook HANDBOOK VERSION comment lt Data handbook This field indicates that the data version contained in this file are managed HANDBOOK VERSION FillValue according to the policy described in the Argo data management handbook Example 1 0 REFERENCE DATE TIME char REFERENCE DATE TIME DATE TIME Date of reference for julian days REFERENCE DATE TIME comment Date of reference The recommended reference date time for Julian days is REFERENCE DATE TIME conventions lt 19500101000000 January 1 1950 YYYYMMDDHHMISS 00 00 00 REFERENCE_DATE_TIME _FillValue 2 3 3 General information on the float This section contains general information on the float Definition Comment PLATFORM_NUMBER char PLATFORM_NUMBER STRING8 WMO float identifier PLATFORM NUMBER long name Float WMO is the World Meteorological Organization unique identifier This platform number is unique PLATFORM_NUMBER conventions Example 6900045 WMO float identifier ASIII PLATFORM NUMBER FillValue PR
7. DESCENDING PROFILING TIME FillValue 99999 f float ASCENDING PROFILING TIME N CYCLES ASCENDING PROFILING TIME long name lt The time spent sampling the ascending profile ASCENDING PROFILING TIME units lt decimal hour ASCENDING PROFILING TIME FillValue 99999 f float SURFACE TIME N CYCLES SURFACE TIME long name lt The time spent at the surface SURFACE_TIME units decimal hour SURFACE_TIME _FillValue 99999 f float PARKING_PRESSURE N_CYCLES PARKING_PRESSURE long_name The pressure of subsurface drifts PARKING_PRESSURE units decibar PARKING_PRESSURE _FillValue 99999 f float DEEPEST_PRESSURE N_CYCLES DEEPEST_PRESSURE long_name The deepest pressure sampled in the ascending profile DEEPEST PRESSURE units decibar DEEPEST PRESSURE FillValue 99999 f float DEEPEST_PRESSURE_DESCENDING N_CYCLES DEEPEST PRESSURE DESCENDING long name The deepest pressure sampled in the descending profile DEEPEST PRESSURE DESCENDING units decibar DEEPEST PRESSURE DESCENDING FillValue 99999 f a N CYCLES dimension Each N CYCLE describes a cycle Comment Number of times this cycle repeats Usually REPETITION RATE and N CYCLE are set to 1 all the cycles are programmed to be the same However some floats may perform cycles with different programming Example a float is programmed to perform regularly 4 cycles with 400 decibar profiles and the 5 cycle with a 2000 decibar
8. Its format is an autodescriptive Ascii with comma separated values The directory file contains e A header with a list of general informations title description project name format version date of update ftp root addresses GDAC node e A table with a description of each file of the GDAC ftp site This table is a comma separated list Metadata directory format definition Title Metadata directory file of the Argo Global Data Assembly Center Description The directory file describes all metadata files of the argo GDAC ftp site Project ARGO Format version 2 0 Date of update YYYYMMDDHHMISS FTP root number 1 ftp ftp ifremer fr ifremer argo dac FTP root number 2 ftp usgodae usgodae org pub outgoing argo dac GDAC node CORIOLIS file profiler_type institution date_update e file path and file name on the ftp site Fill value none this field is mandatory profiler_type type of profiling float as described in reference table 8 Fill value blank institution institution of the profiling float described in reference table 4 Fill value blank date update date of last update of the file YYYYMMDDHHMISS Fill value blank Metadata directory example Title Metadata directory file of the Argo Global Data Assembly Center Description The directory file describes all metadata files of the argo GDAC ftp site Project ARGO Format version 2 0 Date of up
9. see 4 1 2 2 1 Dimensions and definitions Name Definition DATE_TIME DATE_TIME 14 This dimension is the length of an ASCII date and time value Date_time convention is YYYYMMDDHHMISS YYYY year MM month DD day HH hour of the day as 0 to 23 MI minutes as 0 to 59 e SS seconds as 0 to 59 Date and time values are always in universal time coordinates UTC Examples 20010105172834 January 5 2001 17 28 34 19971217000000 December 17 1997 00 00 00 STRING256 STRING256 String dimensions from 2 to 256 STRING64 STRING64 STRING32 STRING32 STRING16 STRING16 STRING8 STRING8 STRING4 STRING4 STRING2 STRING2 N_PROF N_PROF lt int Number of profiles contained in the file value gt This dimension depends on the data set A file contains at least one profile There is no defined limit on the maximum number of profiles in a file Example N_PROF 100 N_PARAM N_PARAM lt int Maximum number of parameters measured or calculated for a pressure value gt sample This dimension depends on the data set Examples pressure temperature N_PARAM 2 pressure temperature salinity N_PARAM 3 pressure temperature conductivity salinity N_PARAM 4 N_LEVELS N_LEVELS lt int Maximum number of pressure levels contained in a profile value gt This dimension depends on the data set Example N_LEVELS 100 N_CALIB lt int Maximum number of calibrations performed on a profile value gt
10. 1 Dimensions and definitions Name Definition Comment DATE_TIME DATE_TIME 14 This dimension is the length of an ASCII date and time value Date_time convention is YYYYMMDDHHMISS YYYY year MM month DD day HH hour of the day MI minutes SS seconds Date and time values are always in universal time coordinates UTC Examples 20010105172834 J anuary 5 2001 17 28 34 19971217000000 December 17 1997 00 00 00 STRING256 STRING256 String dimensions from 2 to 256 STRING64 STRING64 STRING32 STRING32 STRING16 STRING16 STRING8 STRING8 STRING4 STRING4 STRING2 STRING2 2 N_CYCLES N_CYCLES lt int Number of different nominal cycles value gt This value is usually set to 1 all the cycles are programmed to be the same However some floats may perform cycles with different programming Example a float is programmed to perform regularly 4 cycles with 400 decibar profiles and the 5 cycle with a 2000 decibar profile In that case N_CYCLE is set to 2 N_CYCLES 2 The first N CYCLE has a REPETITION RATE of 4 and the second has a REPETITION RATE of 1 N_PARAM N_PARAM lt int Number of parameters measured or calculated for a pressure sample value gt Examples pressure temperature N PARAM 2 pressure temperature salinity N PARAM 3 pressure temperature conductivity salinity N PARAM 4 Argo data management User s manual 2 4 2 General information on the meta data file This section con
11. 1950 01 01 00 00 00 UTC JULD conventions Relative julian days with decimal part as parts of day JULD _ FillValue 999999 double LATITUDE N_PROF LATITUDE long_name Latitude of the station best estimate LATITUDE units degree north LATITUDE _ FillValue 99999 LATITUDE valid_min 90 LATITUDE valid_max 90 double LONGITUDE N_PROF LONGITUDE long_name Longitude of the station best estimate LONGITUDE units degree east LONGITUDE _ FillValue 99999 LONGITUDE valid_min 180 LONGITUDE valid_max 180 char POSITION OC N PROF POSITION OC long name Quality on position latitude and longitude POSITION OC conventions lt Argo reference table 2 POSITION OC FillValue char POSITIONING SYSTEM N PROF STRI NG8 POSITIONING SYSTEM long name lt Positioning system POSITIONING SYSTEM FillValue char PROFILE lt PARAM gt OC N PROF PROFILE lt PARAM gt OC long name lt Global guality flag of lt PARAM gt profile PROFILE lt PARAM gt OC conventions Argo reference table 2a PROFILE lt PARAM gt OC FillValue Julian day of the profile The integer part represents the day the decimal part represents the time of the profile Date and time are in universal time coordinates The julian day is relative to REFERENCE DATE TIME Example 18833 8013889885 July 25 2001 19 14 00 Quality flag on J ULD date and time The f
12. ADJ USTED SEA TEMPERATURE TEMP ADJUSTED FillValue 99999 f TEMP ADJUSTED units degree Celsius TEMP ADJUSTED valid min 2 f TEMP ADJUSTED valid max 40 f TEMP ADJ USTED comment Adjusted parameter TEMP ADJUSTED C format 9 3f TEMP ADJUSTED FORTRAN formats F9 3 TEMP ADJUSTED resolution lt 0 001f char TEMP ADJUSTED OC N PROF N LEVELS TEMP ADJUSTED OC long name quality flag TEMP ADJUSTED OC conventions lt Argo reference table 2 TEMP ADJUSTED OC FillValue float TEMP ADJUSTED ERROR N PROF N LEVELS TEMP ADJUSTED ERROR long name ERROR ON ADJ USTED SEA TEMPERATURE TEMP ADJUSTED ERROR FillValue 99999 f TEMP ADJ USTED ERROR units lt degree Celsius TEMP ADJUSTED ERROR comment Contains the error on the adjusted values as determined by the delayed mode QC process TEMP ADJUSTED ERROR C format 9 3f TEMP ADJUSTED ERROR FORTRAN formats F9 3 TEMP ADJUSTED ERROR resolution lt 0 001f Argo data management User s manual GG AS 2 2 5 Calibration information for each profile Calibrations are applied to parameters to create adjusted parameters Different calibration methods will be used by groups processing Argo data When a method is applied its description is stored in the following fields This section contains calibration information for each parameter of each profile Each item of this section has a N_PROF number of profiles N_CALIB numbe
13. STEPS CODES 51 3 13 REFERENCE TABLE 13 OCEAN CODES 52 3 14 REFERENCE TABLE 14 TECHNICAL PARAMETER NAMES 52 4 DATA ACCESS 53 4 1 FILE NAMING CONVENTION ON GDACS 53 4 2 OTHER DATA SOURCES 53 5 USING THE HISTORY SECTION OF THE ARGO NETCDE STRUCTURE 55 5 1 RECORDING INFORMATION ABOUT THE DELAYED MODE QC PROCESS 55 5 2 RECORDING PROCESSING STAGES 56 5 3 RECORDING QC TESTS PERFORMED AND FAILED 57 5 4 RECORDING CHANGES IN VALUES 58 Argo data management User s manual aaa 5 History of the document Version Date lia nr osa 16 01 2001__ 0b Keeley general comments and updates osa 24 0112002 valrie Harscoat general comments and updates osa 25 01 2002 _ Ciausla Schmid general comments and updates osa 24 01 2002 Roger Goldsmith general comments and updates 05 03 2002 Roger Goldsmith Yasushi Takatsuki and Claudia Schmid comments implemented Description of directory file format Update of reference tables 1 0a 24 01 2003 Update of measurements of each profile to handle corrected values 24 01 2003 Increase the size of DC_REFERENCE from STRING16 to STRING32 17 03 2003 Replace corrected values with adjusted values 1 0b 29 04 2003 DC_REFERENCE removed from trajectory format general information of the float section 2 0 12 11 2003 All comments from Argo user s manual comments ref ar dm 02 02 implemented General agreement from Argo data management meeting in Monterey Nov 5 7
14. Some Argo data are also available from GTS Global Telecommunication System a network operated by WMO World Meteorological Organization On GTS there are 2 formats for Argo profiles e TESAC an Ascii format Argo data management User s manual a 25 e BUFR a binary format under development The description of these format is available from the WMO web site e http www wmo ch e http www wmo ch web www DPS NewCodesTables WMO306vol I 1PartA pdf Argo data management User s manual E 5 Using the History section of the Argo netCDF Structure Within the netCDF format are a number of fields that are used to track the progression of the data through the data system This section records the processing stages results of actions that may have altered the original values and information about QC tests performed and failed The purpose of this document is to describe how to use this section of the format The creation of entries in the history section is the same for both profile and trajectory data The next sections provide examples of what is expected The information shown in the column labeled Sample is what would be written into the associated Field name in the netCDF format 5 1 Recording information about the Delayed Mode QC process The process of carrying out delayed mode QC may result in adjustments being made to observed variables The table below shows how to record that the delayed mode QC has been done Note t
15. This dimension depends on the data set Example N_CALIB 10 N_HISTORY N_HISTORY Number of history records Argo data management User s manual 2 2 2 General information on the profile file This section contains information about the whole file Name DATA_TYPE FORMAT_VERSION HANDBOOK_VERSION REFERENCE_DATE_TIME Definition char DATA TYPE STRINGI6 DATA TYPE comment lt Data type DATA TYPE FillValue char FORMAT VERSION STRING4 FORMAT VERSION comment File format version FORMAT VERSION FillValue char HANDBOOK VERSION STRING4 HANDBOOK VERSION comment lt Data handbook version HANDBOOK VERSION FillValue char REFERENCE DATE TIME DATE TIME REFERENCE DATE TIME comment Date of reference for Julian days REFERENCE DATE TIME conventions lt YYYYMMDDHHMI SS REFERENCE DATE TIME FillValue 2 2 3 General information for each profile This section contains general information on each profile Comment This field contains the type of data contained in the file The list of acceptable data types is in the reference table 1 Example Argo profile File format version Example 2 2 Version number of the data handbook This field indicates that the data contained in this file are managed according to the policy described in the Argo data management handbook Example 1 0 Date of reference for julian days The recommended referenc
16. and the requirement to record other information about the reference database used When other tests are performed such as the automated real time QC a group of tests are applied all at once In this case instead of recording that each individual test was performed and whether or not the test was failed it is possible to document all of this in two history records The first documents what suite of tests was performed and the second documents which tests in the suite were failed A test is failed if the value is considered to be something other than good i e the resulting QC flag is set to anything other than 1 An example of each is provided If data pass through QC more than once an entry for each passage should be written and the variable N HISTORY updated appropriately Example QC tests performed and failed The example shown here records that the data have passed through real time QC and that two tests failed The encoding of tests performed is done by adding the ID numbers provided in reference table 11 for all tests performed then translating this to a hexadecimal number and recording this result Record 1 Documenting the tests performed Field Sample Explanation HISTORY_INSTITUTION Selected from the list in reference table 4 HISTORY_STEP ARGQ Selected from the list in reference table 12 HISTORY_SOFTWARE FillValue This field does not apply oe SOFTWARE_RELEAS FillValue This field does not apply HISTORY REFERENCE F
17. lt lt X gt char lt PARAM gt ADJUSTED OC N PROF N LEVELS lt PARAM gt ADJUSTED OC long name lt guality flag lt PARAM gt ADJUSTED OC conventions lt Argo reference table 2 lt PARAM gt ADJUSTED OC FiliValue float lt PARAM gt ADJUSTED ERROR N PROF N LEVELS lt PARAM gt ADJUSTED ERROR long name lt X gt lt PARAM gt ADJUSTED ERROR FillValue lt X gt lt PARAM gt ADJUSTED ERROR units lt X gt Comment lt PARAM gt contains the original values of a parameter listed in reference table 3 lt X gt this field is specified in the reference table 3 Quality flag applied on each lt PARAM gt values The flag scale is specified in table 2 lt PARAM gt ADJUSTED contains the adjusted values derived from the original values of the parameter lt X gt this field is specified in the reference table 3 lt PARAM gt ADJUSTED is mandatory When no adjustment is performed the FillValue is inserted Quality flag applied on each lt PARAM gt _ADJ USTED values The flag scale is specified in reference table 2 lt PARAM gt ADJUSTED OC is mandatory When no adjustment is performed the FillValue is inserted lt PARAM gt ADJUSTED ERROR contains the error on the adjusted values of the parameter lt X gt this field is specified in the reference table 3 lt PARAM gt ADJUSTED ERROR comment lt Contains the lt PARAM gt ADJUSTED ERROR is User s manual error
18. lt PARAM gt _ADJUSTED_QC and lt PARAM gt _ADJUSTED_ERROR Name Definition Comment DATA_MODE char DATA MODE N MEASUREMENT Indicates if the profile contains real time or delayed mode DATA_MODE long_name Delayed mode or data real time data R real time data DATA MODE conventions R real time D D delayed mode data delayed mode A real time with A real time data with adjusted values adjustment DATA MODE FillValue DC REFERENCE char DC REFERENCE N MEASUREMENT Unique identifier of the location in the data centre STRING32 Data centres may have different identifier schemes DC REFERENCE long name Location DC REFERENCE is therefore not always unigue across data unigue identifier in data centre centres DC REFERENCE conventions lt Data centre convention DC REFERENCE FillValue JULD double J ULD N MEASUREMENT Julian day of the location or measurement J ULD long name Julian day UTC of each The integer part represents the day the decimal part measurement relative to represents the time of the measurement REFERENCE DATE TIME Date and time are in universal time coordinates ULD units days since 1950 01 01 The julian day is relative to REFERENCE DATE TIME 00 00 00 UTC Example J ULD conventions Relative julian days with 18833 8013889885 J uly 25 2001 19 14 00 decimal part as parts of the day JULD _ FillValue 999999 JULD_QC char J ULD OC N MEASUREMENT Quality flag
19. may not have full geospatial and temporal referencing but have sufficient information to uniguely reference the data to the point of measurement subsampled averaged etc but no assumptions of scales of variability or thermodynamic relationships have been used in the processing The data have been processed with assumptions about the scales of variability or hermodynamic Data have complete geospatial and temporal references Information may have been compressed e g relationships The data are normally reduced to regular space time intervals with enhanced signal to noise Class Descriptor No scrutiny value judgements or intercomparisons are performed on the data The records are derived directly from the input with no filtering or subsampling Data have been scrutinized and evaluated against a defined and documented set of measures The process is often automated i e has no human intervention and the measures are published and widely available Data have been scrutinized fully including intra record and intra dataset comparison and consistency checks Scientists have been involved in the evaluation and brought latest knowledge to bear The procedures are published widely available and widely accepted Data state indicator recommended use Subclass Some reductions or subsampling has been performed but the original record is available Geospatial and temporal properties are checked Geophysical values are v
20. on J ULD date and time JULD OC long name Quality on date and The flag scale is described in the reference table 2 time Example JULD OC conventions Argo reference table 1 the date and time seems correct 2 ULD QC FillValue LATITUDE double LATITUDE N MEASUREMENT Latitude of the location or measurement LATITUDE long name Latitude of each Unit degree north location Example 44 4991 for 44 29 56 76 N Argo data management User s manual LONGITUDE POSITION_ACCURA CY POSITION_QC im lt PARAM gt lt PARAM gt OC lt PARAM gt ADJUSTE D lt PARAM gt ADJUSTE D OC lt PARAM gt ADJUSTE D ERROR LATITUDE units lt degree north LATITUDE _FillValue 99999 LATITUDE valid_min 90 LATITUDE valid_max 90 double LONGITUDE N_MEASUREMENT LONGITUDE long_name Longitude of each location LONGITUDE units degree east LONGITUDE _ FillValue 99999 LONGITUDE valid_min 180 LONGITUDE valid_max 180 char POSITION_ACCURACY N_MEASUREMENT POSITION ACCURACY long_name Estimated accuracy in latitude and longitude POSITION_ACCURACY conventions Argo reference table 5 POSITION ACCURACY FillValue char POSITION OC N MEASUREMENT POSITION OC long name lt Ouality on position POSITION OC conventions lt Argo reference table 2 POSITION OC FillValue int CYCLE NUMBER N MEASUREMENT CYCLE NUMBER long name Floa
21. profile In that case N_CYCLE is set to 2 The first N CYCLE has a REPETITION_RATE of 4 and the second has a REPETITION RATE of 1 Total time of a cycle This time includes the descending time the parking time the ascending time and the surface time Unit decimal hour Example 240 hours for a ten day cycle Time spent at the parking pressure This time does not include the descending and ascending times Unit decimal day Example 222 for 9 days and 6 hours at parking pressure Time spent in descent Unit decimal hour Example 8 5 for 8 hours 30 minutes of descending Time spent in ascent Unit decimal hour Example 7 5 for 7 hours 30 minutes of descending Time spent on the surface surface drift Unit decimal hour Example 10 for a 10 hours surface drift Pressure of the subsurface drift Unit decibar Example 1500 0 for a subsurface drift at 1500 0 decibars Deepest pressure sampled in the ascending profile Unit decibar Example 2000 0 for an ascending profile starting at 2000 0 decibar Deepest pressure sampled in the descending profile Unit decibar Example 500 0 for a descending profile ending at 500 0 decibar User s manual T d 2 4 8 Highly desirable meta data parameters A highly desirable meta data parameter should be correctly filled according to the following table Highly desirable meta data mandatory format example DATA TYPE FORMAT VERSION H
22. that provides an implementation of the interface The NetCDF library also defines a machine independent format for representing scientific data Together the interface library and format support the creation access and sharing of scientific data The NetCDF software was developed at the Unidata Program Centre in Boulder Colorado The freely available source can be obtained as a compressed tar file or a zip file from Unidata or from other mirror sites e Ucar web site address http www ucar edu ucar e NetCDF documentation http www unidata ucar edu packages netcdf index html Argo formats are divided in 4 sections e Dimensions and definitions e General information e Data section e History section The Argo NetCDF formats do not contain any global attribute Argo date and times all date and time have to be given in UTC time universal time coordinates Argo data management User s manual Gc AI 2 2 Argo profile file format An Argo profile file contains a set of profiles The minimum mmber is one profile There is no defined maximum number of profiles A profile contains measurements performed at different pressures by an Argo float A profile contains typically 100 pressures from 0 decibar surface to 2000 decibars approximately 2000 meters depth For each pressure sample there is a fixed number of parameters measured or calculated such as temperature salinity or conductivity For file naming conventions
23. the profiling float Example Yves Desaubies List of parameters contained in this profile The parameter names are listed in reference table 3 Examples TEMP PSAL CNDC TEMP temperature PSAL practical salinity CNDC conductvity Float cycle number A profiling float performs cycles In each cycle it performs an ascending vertical profile a subsurface drift and a surface drift In some cases it also performs a descending vertical profile 0 is the number of the launch cycle The User s manual a DC_REFERENCE DATA_STATE_INDICATOR INST_REFERENCE WMO_INST_TYPE Argo data management char DIRECTION N_PROF DIRECTION long_name Direction of the station profiles DIRECTION conventions A ascending profiles D descending profiles DIRECTION FillValue char DATA CENTRE N PROF STRING2 DATA CENTRE long name lt Data centre in charge of float data processing DATA CENTRE conventions lt Argo reference table 4 DATA CENTRE FillValue char DATE_CREATION DATE_TIME DATE_CREATION comment Date of file creation DATE_CREATION conventions YYYYMMDDHHMISS DATE CREATION FillValue char DATE_UPDATE DATE_TIME DATE_UPDATE long_name Date of update of this file DATE_UPDATE conventions YYYYMMDDHHMISS DATE UPDATE FillValue char DC_REFERENCE N_PROF STRING32 DC_REFERENCE long_name Station unique identifier in data centre DC_RE
24. this is done Note that reference table 12 contains the present list of processing stages and there should be at least one entry for each of these through which the data have passed If data pass through one of these steps more than once an entry for each passage should be written and the variable N_HISTORY updated appropriately Some institutions may wish to record more details of what they do In this case adding additional local entries to table 12 is permissible as long as the meaning is documented and is readily available These individual additions can be recommended to the wider community for international adoption Example History entry to record decoding of the data Field Sample Explanation HISTORY INSTITUTION Selected from the list in reference table 4 HISTORY STEP ARFM Selected from the list in reference table 12 HISTORY SOFTWARE FillValue This field does not appl HISTORY SOFTWARE RELEAS FillValue This field does not apply E HISTORY_REFERENCE FillValue This field does not appl HISTORY_DATE 2003080500 The year month day hour minute second that P A ine letih reference table 7 process ran IP Selected from the list in reference table 7 from the list in reference table 7 Argo data management User s manual GC 58 5 3 Recording QC Tests Performed and Failed The delayed mode QC process is recorded separately from the other QC tests that are performed because of the unique nature of the process
25. 0 User s manual 2 4 3 Float characteristics This section contains the main characteristics of the float Definition PLATFORM_NUMBER char PLATFORM_NUMBER STRING8 PLATFORM NUMBER long name Float unique identifier PLATFORM_NUMBER conventions WMO float identifier gt ASIII PLATFORM_NUMBER FillValue char PTT STRING256 PTT long_name Transmission identifier ARGOS ORBCOMM etc PTT FillValue TRANS SYSTEM char TRANS SYSTEM STRING16 TRANS SYSTEM long name The telecommunications system used TRANS SYSTEM FillValue TRANS_SYSTEM_ID char TRANS SYSTEM ID STRING32 TRANS SYSTEM ID long name The program identifier used by the transmission system TRANS SYSTEM ID FillValue TRANS FREOUENCY char TRANS FREOUENCY STRING16 TRANS FREOUENCY long name The frequency of transmission from the float TRANS_FREQUENCY units hertz TRANS FREQUENCY _ FillValue TRANS_REPETITION float TRANS REPETITION TRANS REPETITION long name The repetition rate of transmission from the float TRANS REPETITION units lt second TRANS REPETITION FillValue 99999 f POSITIONING SYSTEM char POSITIONING_SYSTEM STRING8 POSITIONING SYSTEM long name Positioning system POSITIONING SYSTEM FillValue CLOCK DRIFT float CLOCK DRIFT CLOCK DRIFT long name lt The rate of drift of the float clock CLOCK DRIFT units lt decisecond day CLOCK DRIFT FillValue
26. 2003 15 12 2003 History section updated 2 01 01 10 2004 Meta data section WMO_INST_TYPE added to history section INSTRUMENT TYPE renamed INST REFERENCE 10 11 2004 Reference table 2 guality control flag scale updated by Annie Wong 2 01 10 11 2004 Updates in reference table 3 parameter codes table DOXY TEMP DOXY TEMP use ITS 90 scale 23 11 2004 Reference table 14 instrument failure mode added by Annie Wong 2 01 25 02 2005 Table 11 updated for frozen profile and deepest pressure tests from Rebecca Macreadie 2 01 28 02 2005 Table 4 updated CSIO China Second Institute of Oceanography Argo data management User s manual 12 04 2005 Mathieu Belbeoch table 5 updated argos location classes 2 01 12 06 2005 Change lengths of all parameter name variables to accomodate longer parameter names Affects STATION_ PARAMETERS section 2 2 3 PARAMETER section 2 2 5 and HISTORY PARAMETER section 2 2 6 in the profile format TRA ECTORY_PARAMETERS section 2 3 3 and HISTORY_PARAMETER section 2 3 6 in the trajectory format SENSOR section 2 4 5 and PARAMETER section 2 4 6 in the meta data format 12 06 2005 Change conventions attribute and description of PROFILE lt PARAM gt QC in section 2 2 3 12 06 2005 Add reference table 2a for the redefined PROFILE_ lt PARAM gt _QC variables 20 06 2005 New long name for TEMP DOXY in section 3 3 2 ao 22 08 2005 Claudia Schmid general update of trajectory file h
27. A flag 4 may be assigned by an operator during additional visual QC for bad data that are MI correctable 5 Value changed Value changed Value changed 6 Notused Notus oS ka Interpolated _ Interpolated value Interpolated value value Missing value Missing value Missing value Argo data management User s manual 46 3 2 2 Reference table 2a profile guality flag N is defined as the percentage of levels with good data where o QC flag values of 1 2 5 or 8 are GOOD data o QC flag values of 9 missing are NOT USED in the computation o All other QC flag values are BAD data The computation should be taken from lt PARAM_ADJUSTED_QC gt if available and from lt PARAM OC gt otherwise jn No QC performed LA N 100 All profile levels contain good data 75 lt N lt 100 B 75 lt D 25 lt N lt 50 oo o o o E o lt N lt 25 oo O O F N 0 No profile levels have good data Example A TEMP profile has 60 levels 3 levels contain missing values o 45 levels are flagged as 1 o 5 levels are flagged as 2 o 7 levels are flagged as 4 o 3 levels are flagged as 9 missing Percentage of good levels 45 5 57 100 87 7 PROFILE_TEMP_QC B 3 3 Reference table 3 parameter code table The following table describes the parameter codes used for Argo data management Parameter i Valid Valid CC Format Fill value long name min max FORTRAN_ Format reso
28. ANDBOOK VERSION DATE CREATION DATE UPDATE PLATFORM NUMBER PTT TRANS SYSTEM TRANS SYSTEM ID POSITIONING SYSTEM PLATFORM MODEL DIRECTION DATA CENTRE LAUNCH DATE LAUNCH LATITUDE LAUNCH LONGITUDE LAUNCH OC see reference table 2 LAUNCH OC 1 START DATE YYYYMMDDHHMISS START DATE 20010702000000 START_DATE_QC see reference table 2 START_DATE_QC 2 PARAMETER see reference table 3 PARAMETER PRES TEMP PSAL CYCLE_TIME not empty CYCLE_TIME 10 DEEPEST PRESSURE not empty DEEPEST PRESSURE 1092 PARKING PRESSURE not empty PARKING PRESSURE 1000 Argo data management Argo meta data T 2n 1 2 YYYYMMDDHHMISS YYYYMMDDHHMISS XXXXX or XXXXXXX not empty see reference table 10 not empty see reference table 9 not empty A or D see reference table 4 YYYYMMDDHHMISS not empty 90 lt real lt 90 DATA TYPE Argo meta data FORMAT VERSION 2 2 HANDBOOK VERSION 1 2 DATE GREATION 20040210124422 DATE UPDATE 20040210124422 PLATFORM NUMBER 5900077 PTT 23978 TRANS_SYSTEM ARGOS TRANS_SYSTEM_ID 14281 POSITIONING_SYSTEM ARGOS PLATFORM_MODEL SOLO DIRECTION A DATA_CENTRE AO LAUNCH_DATE 20010717000100 LAUNCH_LATITUDE 7 91400003433228 not empty 180 lt real lt 180 LAUNCH_LONGITUDE 179 828338623047 User s manual GG 2 5 Technical information format An Argo technical file contains technical informat
29. ATUS _FillValue Comment Date and time UTC of launch of the float Format YYYYMMDDHHMISS Example 20011230090500 December 30 2001 03 05 00 Latitude of the launch Unit degree north Example 44 4991 44 29 56 76 N Longitude of the launch Unit degree east Example 16 7222 16 43 19 92 E Quality flag on launch date time and location The flag scale is described in the reference table 2 Example 1 launch location seems correct Date and time UTC of the first descent of the float Format YYYYMMDDHHMISS Example 20011230090500 December 30 2001 06 05 00 Quality flag on start date The flag scale is described in the reference table 2 Example 1 start date seems correct Identifier of the deployment platform Example L ATALANTE Identifier of the mission used to deploy the platform Example POMME2 Identifier of CTD or XBT stations used to verify the first profile Example 58776 58777 Date UTC of the end of mission of the float Format YYYYMMDDHHMISS Example 20011230090500 December 30 2001 03 05 00 Status of the end of mission of the float User s manual 2 4 5 Float sensor information This section contains information about the sensors of the profiler Name SENSOR MODEL SENSOR SERIAL NO SENSOR UNITS SENSOR ACCURACY SENSOR RESOLUTION Definition char SENSOR N PARAM STRING16 SENSOR long name List of s
30. AUNCH LONGITUDE valid min 180 LAUNCH LONGITUDE valid max lt 180 char LAUNCH OC LAUNCH OC long name Quality on launch date time and location LAUNCH_QC conventions Argo reference table 2 LAUNCH_QC _ FillValue char START_DATE DATE_TIME START_DATE long_name Date UTC of the first descent of the float START DATE conventions YYYYMMDDHHMI SS START DATE FillValue char START DATE OC START DATE OC long name Quality on start date START DATE OC conventions lt Argo reference table 2 START DATE OC FillValue char DEPLOY PLATFORM STRING32 DEPLOY PLATFORM long name Identifier of the deployment platform DEPLOY PLATFORM FillValue char DEPLOY MISSION STRING32 DEPLOY MISSION long name Identifier of the mission used to deploy the float DEPLOY MISSION FillValue char DEPLOY AVAILABLE PROFILE ID STRING256 DEPLOY AVALAIBLE PROFILE ID long name lt Identifier of stations used to verify the first profile DEPLOY AVAILABLE PROFILE ID FillValue char END_MISSION_DATE DATE_TIME END_MISSION_DATE long_name Date UTC of the end of mission of the float END_MISSION_DATE conventions YYYYMMDDHHMI SS END MISSION DATE FillValue char END_MISSION_STATUS END_MISSION_STATUS long_name Status of the end of mission of the float END_MISSION_STATUS conventions T No more transmission received R Retrieved END_MISSION_ST
31. A_STATE_INDICATOR INST_REFERENCE WMO_INST_TYPE POSITIONING_SYSTEM Argo data management file creation DATE_CREATION conventions YYYYMMDDHHMISS DATE CREATION FillValue char DATE_UPDATE DATE_TIME DATE_UPDATE long_name Date of update of this file DATE_UPDATE conventions YYYYMMDDHHMISS DATE UPDATE FillValue char DATA STATE INDICATOR STRING4 DATA STATE INDICATOR long name lt Degree of processing the data have passed through DATA STATE INDICATOR conventions Argo reference table 6 DATA STATE INDICATOR FillValue char INST REFERENCE STRING64 INST REFERENCE long name lt nstrument type INST REFERENCE conventions lt Brand type serial number INST REFERENCE FillValue char WMO INST TYPE STRING4 WMO INST TYPE long name Coded instrument type WMO INST TYPE conventions lt Argo reference table 8 WMO INST TYPE FillValue char POSITIONING SYSTEM STRING8 POSITIONING SYSTEM long name lt Positioning system POSITIONING SYSTEM FillValue Example 20011229161700 December 29 2001 16 17 00 Date and time UTC of update of this file Format YYYYMMDDHHMI SS Example 20011230090500 December 30 2001 09 05 00 Degree of processing the data has passed through The data state indicator is described in the reference table 6 Information about instrument brand type serial number Example APEX SBE 259
32. Argo data management March 1 2006 ar um 02 01 USER S MANUAL Version 2 1 ed G Q Q O G s G ge chel G O O O fom G ARGO part of the integrated global observation strategy r ARGO part of the integrated global observation strategy Argo data management User s manual Ref ar um 02 01 Ref ifremer cor do dti mut 02 084 Version 2 1 Date 01 03 2006 Authors Thierry Carval Ifremer Bob Keeley MEDS Yasushi Takatsuki JAMSTEC Takashi Yoshida JMA Stephen Loch BODC Claudia Schmid AOML Roger Goldsmith WHOI Annie Wong UW Rebecca McCreadie BODC Ann Thresher CSIRO Ahn Tran MEDS Gc 3 Table of contents HISTORY OF THE DOCUMENT 5 1 INTRODUCTION 7 1 1 ARGO PROGRAM DATA MANAGEMENT CONTEXT 7 1 2 ARGO FLOAT DATA 7 1 3 REAL TIME AND DELAYED MODE DATA 9 2 FORMATS DESCRIPTION 0d 2 1 OVERVIEW OF THE FORMA TS 10 2 2 ARGO PROFILE FILE FORMAT 11 2 2 1 DIMENSIONS AND DEFINITIONS 11 2 2 2 GENERAL INFORMATION ON THE PROFILE FILE 12 2 2 3 GENERAL INFORMATION FOR EACH PROFILE 12 2 2 4 MEASUREMENTS FOR EACH PROFILE 15 2 2 5 CALIBRATION INFORMATION FOR EACH PROFILE 17 2 2 6 HISTORY INFORMATION FOR EACH PROFILE 18 2 3 TRAJECTORY FORMAT 20 2 3 1 DIMENSIONS AND DEFINITIONS 20 2 3 2 GENERAL INFORMATION ON THE TRAJECTORY FILE 21 2 3 3 GENERAL INFORMATION ON THE FLOAT 21 2 3 4 LOCATIONS AND MEASUREMENTS FROM THE FLOAT 23 2 3 5 CYCLE INFORMATION FRO
33. Date of the calibration N CALIB N PARAM DATE TIME Example 20011217161700 CALIBRATION DATE FillValue Argo data management User s manual GG AS 2 2 6 History information for each profile This section contains history information for each action performed on each profile by a data centre Each item of this section has a N_HISTORY number of history records N_PROF number of profiles dimension A history record is created whenever an action is performed on a profile The recorded actions are coded and described in the history code table from the reference table 7 On the GDAC multi profile history section is empty to reduce the size of the file History section is available on mono profile files or in multi profile files distributed from the web data selection Definition Comment HISTORY_INSTITUTION char HISTORY_INSTITUTION Institution that performed the action N_HISTORY N_PROF STRING4 Institution codes are described in reference table 4 HISTORY_INSTITUTION long_name Example ME for MEDS Institution which performed action HISTORY INSTITUTION conventions Argo reference table 4 HISTORY INSTITUTION FillValue HISTORY STEP char HISTORY STEP N HISTORY Code of the step in data processing for this history N PROF STRING4 record The step codes are described in reference HISTORY STEP long name Step table 12 in data processing Example HISTORY STEP conventions Argo ARGQ Aut
34. FERENCE conventions Data centre convention DC REFERENCE FillValue char DATA_STATE_INDICATOR N_PROF STRING4 DATA STATE INDICATOR long name lt Degree of processing the data have passed through DATA STATE INDICATOR conventions lt Argo reference table 6 DATA STATE INDICATOR FillValue char DATA MODE N PROF DATA MODE long name Delayed mode or real time data DATA MODE conventions R real time D delayed mode A real time with adjustment DATA MODE FillValue char INST REFERENCE N PROF STRING64 INST REFERENCE long name Instrument type INST REFERENCE conventions lt Brand type serial number INST REFERENCE FillValue char WMO INST TYPE N PROF STRING4 WMO INST TYPE long name Coded instrument type WMO INST TYPE conventions lt Argo reference table 8 subsurface drift of the cycle 0 may not be complete 1 is the number of the first complete cycle Example 10 cycle number 10 Type of profile on which measurement occurs A ascending profile D descending profile Code for the data centre in charge of the float data management The data centre codes are described in the reference table 4 Example ME for MEDS Date and time UTC of creation of this file Format YYYYMMDDHHMISS Example 20011229161700 December 29 2001 16 17 00 Date and time UTC of update of this file Format YYYYMMDDHHMISS Example 20011230090500
35. M THE FLOAT 29 2 3 6 HISTORY INFORMATION 27 2 4 META DATA FORMAT 29 2 4 1 DIMENSIONS AND DEFINITIONS 29 2 4 2 GENERAL INFORMATION ON THE META DATA FILE 30 2 4 3 FLOAT CHARACTERISTICS 31 2 4 4 FLOAT DEPLOYMENT AND MISSION INFORMATION 33 2 4 5 FLOAT SENSOR INFORMATION 34 2 4 6 FLOAT CALIBRATION INFORMATION 34 2 4 7 FLOAT CYCLE INFORMATION 36 2 4 8 HIGHLY DESIRABLE META DATA PARAMETERS 37 2 5 TECHNICAL INFORMATION FORMAT 38 2 5 1 DIMENSIONS AND DEFINITIONS 38 2 5 2 GENERAL INFORMATION ON THE TECHNICAL DATA FILE 39 2 5 3 TECHNICAL DATA 40 2 6 GDAC FTP DIRECTORY FILE FORMAT 41 2 6 1 PROFILE DIRECTORY FILE FORMAT 41 2 6 2 TRAJECTORY DIRECTORY FORMAT 42 2 6 3 META DATA DIRECTORY FORMAT 43 3 REFERENCE TABLES 44 3 1 REFERENCE TABLE 1 DATA TYPE 44 Argo data management User s manual 3 2 REFERENCE TABLE 2 ARGO QUALITY CONTROL FLAG SCALE 44 3 2 1 REFERENCE TABLE 2 MEASUREMENT FLAG SCALE 44 3 2 2 REFERENCE TABLE 2A PROFILE QUALITY FLAG 45 3 3 REFERENCE TABLE 3 PARAMETER CODE TABLE 45 3 4 REFERENCE TABLE 4 DATA CENTRES AND INSTITUTIONS CODES 46 3 5 REFERENCE TABLE 5 LOCATION CLASSES ARGOS 46 3 6 REFERENCE TABLE 6 DATA STATE INDICATORS 47 3 7 REFERENCE TABLE 7 HISTORY ACTION CODES 48 3 8 REFERENCE TABLE 8 INSTRUMENT TYPES 49 3 9 REFERENCE TABLE 9 POSITIONING SYSTEM 49 3 10 REFERENCE TABLE 10 TRANSMISSION SYSTEM 49 3 11 REFERENCE TABLE 11 OC TEST IDS 49 3 12 REFERENCE TABLE 12 HISTORY
36. NT N PARAM STRING2 calibration 56 Example PREDEPLOYMENT CALIB COMMENT long name lt The sensor is not stable Comment applying to this parameter calibration PREDEPLOYMENT CALIB COMMENT FillValue Argo data management User s manual Gc 2 4 7 Float cycle information This section contains information on the cycle characteristics of the float The values included in this section are programmed or estimated They are not measured Fach value has configuration REPETITION_RATE CYCLE_TIME PARKING_TIME DESCENDING PROFILING _TIME ASCENDING_PROFILING_ TIME SURFACE_TIME PARKING_PRESSURE DEEPEST_PRESSURE DEEPEST_PRESSURE_DE SCENDING Argo data management Definition int REPETITION RATE N CYCLES REPETITION RATE long name The number of times this cycle repeats REPETITION RATE units lt number REPETITION RATE FillValue 99999 float CYCLE TIME N CYCLES CYCLE TIME long name lt The total time of a cycle descent parking ascent surface CYCLE_TIME units decimal hour CYCLE_TIME _ FillValue 99999 f float PARKING TIME N CYCLES PARKING TIME long name The time spent at the parking pressure PARKING TIME units lt decimal hour PARKING TIME FillIValue 99999 f float DESCENDING PROFILING TIME N CYCLES DESCENDING PROFILING TIME long name lt The time spent sampling the descending profile DESCENDING PROFILING TIME units lt decimal hour
37. OJ ECT NAME char PROJECT NAME STRING64 Name of the project which operates the float that PROJECT NAME comment lt Name of performed the trajectory the project Example GYROSCOPE EU project for ARGO PROJECT NAME FillValue program PI NAME char PI NAME STRING64 Name of the principal investigator in charge of the NE PI NAME comment lt Name of the float principal investigator Example Yves Desaubies PI NAME FillValue TRAJ ECTORY PARAMETERS char List of parameters contained in this trajectory file TRAJ ECTORY PARAMETERS N PARAM S The parameter names are listed in reference table 3 TRING16 Examples TEMP PSAL CNDC TRAJ ECTORY PARAMETERS long name TEMP temperature List of available parameters for the PSAL practical salinity station CNDC conductvity TRAJ ECTORY_PARAMETERS conventions Argo reference table 3 TRAJ ECTORY PARAMETERS FillValue DATA CENTRE char DATA CENTRE STRING2 Code for the data centre in charge of the float data DATA CENTRE long name Data management centre in charge of float data processing The data centre codes are described in the reference DATA CENTRE conventions lt Argo table 4 reference table 4 Example ME for MEDS DATA CENTRE FillValue DATE CREATION char DATE CREATION DATE TIME Date and time UTC of creation of this file DATE CREATION comment Date of Format YYYYMMDDHHMISS Argo data management User s manual DATE_UPDATE DAT
38. T lt PARAM gt ADJUSTED ERROR long name lt lt X gt lt PARAM gt ADJUSTED ERROR FillValue lt X gt Argo data management Longitude of the location or measurement Unit degree east Example 16 7222 for 16 43 19 92 E Position accuracy received from the positioning system The location classes from ARGOS are described in the reference table 5 Example 3 fora latitude and longitude accuracy lt 150 m Quality flag on position The flag on position is set according to LATITUDE LONGITUDE J ULD quality The flag scale is described in the reference table 2 Example 1 position seems correct Cycle number of the float for this measurement For one cycle number there are usually several locations measurement received Example 17 for measurements performed during the 17 cycle of the float lt PARAM gt contains the original values of a parameter lis ted in reference table 3 lt X gt this field is specified in the reference table 3 Quality flag applied on each lt PARAM gt values The flag scale is specified in table 2 lt PARAM gt ADJ USTED contains the adjusted values derived from the original values of the parameter lt X gt this field is specified in the reference table 3 lt PARAM gt _ADJ USTED is mandatory When no adjustment is performed the FillValue is inserted Quality flag applied on each lt PARAM gt _ADJ USTED values The flag scale is specified in reference table 2
39. TOP INDEX FillIValue 99999 char HISTORY OCTEST N HISTORY N HISTORY2 STRING16 HISTORY OCTEST long name lt Documentation of tests performed tests failed in hex form HISTORY OCTEST conventions lt Write tests performed when ACTION QCP tests failed when ACTION lt OCF HISTORY OCTEST FillValue The usage of history section is described in 5 netCDF Structure Argo data management Name of the parameter on which the action is performed Example PSAL Parameter or flag of the previous value before action Example 2 probably good for a flag that was changed to 1 good Name of dimension to which HISTORY START INDEX and HISORY STOP INDEX Correspond C N CYCLE M N MEASUREMENT Start index the action is applied to This index corresponds to N MEASUREMENT or N CYCLE depending on the corrected parameter Example 100 Stopt index the action is applied to This index corresponds to N MEASUREMENT or N CYCLE depending on the corrected parameter Example 150 This field records the tests performed when ACTION is set to OCP gc performed the test failed when ACTION is set to QCF qc failed The QCTEST codes are describe in reference table 11 Example 0A in hexadecimal form Using the History section of the Argo User s manual GG 2 4 Meta data format An Argo meta data file contains information about an Argo float For file naming conventions see 4 1 2 4
40. TORY_DATE FiValue T_T HISTORY ACTION char HISTORY ACTION N HISTORY Name of the action N PROF STRING4 The action codes are described in reference table 7 HISTORY ACTION long name lt Example QCF for QC failed Action performed on data HISTORY_ACTION conventions Argo reference table 7 HISTORY ACTION FillValue HISTORY_PARAMETER char HISTORY_PARAMETER Name of the parameter on which the action is N HISTORY N PROF STRING16 performed HISTORY PARAMETER long name lt Example PSAL Station parameter action is performed on HISTORY PARAMETER conventions Argo reference table 3 HISTORY PARAMETER FillValue HISTORY START PRES float HISTORY START PRES Start pressure the action is applied to N HISTORY N PROF Example 1500 0 HISTORY START PRES long name lt Start pressure action applied on HISTORY START PRES FillValue 99999 f HISTORY START PRES units lt decibar HISTORY STOP PRES float HISTORY STOP PRES Stop pressure the action is applied to This should be N HISTORY N PROF greater than START PRES HISTORY STOP PRES long name lt Example 1757 0 Stop pressure action applied on HISTORY STOP PRES FillValue 99999 f HISTORY STOP PRES units decibar HISTORY_PREVIOUS_VALUE float HISTORY_PREVIOUS_VALUE Parameter or flag of the previous value before action N_HISTORY N_PROF Example 2 probably good for a flag that was HISTORY_PREVIOUS_VALUE long_na change
41. YPE FORMAT_VERSION HANDBOOK_VERSION DATA_CENTRE DATE_CREATION DATA_UPDATE Argo data management Definition char PLATFORM_NUMBER STRING8 PLATFORM NUMBER long name Float unique identifier PLATFORM NUMBER convention s lt WMO float identifier ASIII PLATFORM_NUMBER _FillValue un char DATA TYPE STRING32 DATA TYPE comment lt Data type DATA TYPE FillValue char FORMAT VERSION STRING4 FORMAT VERSION comment lt File format version FORMAT VERSION FillValue char HANDBOOK VERSION STRING4 HANDBOOK VERSION comment Data handbook version HANDBOOK VERSION FillValue un char DATA CENTRE STRING2 DATA CENTRE long name lt Data centre in charge of float data processing DATA CENTRE conventions lt Argo reference table 4 DATA CENTRE FillValue char DATE CREATION DATE TIME DATE CREATION comment lt Date of file creation DATE CREATION conventions lt YYYYMMDDHHMISS DATE_CREATION _ FillValue char DATE UPDATE DATE TIME DATE UPDATE long name lt Date of update of this file DATE UPDATE conventions lt YYYYMMDDHHMI SS DATE UPDATE FillValue Comment WMO float identifier WMO is the World Meteorological Organization This platform number is unigue Example 6900045 This field contains the type of data contained in the file The list of acceptable data types is in the reference table 1 Example Argo
42. alidated If not validated this is clearly indicated Measures are completely automated or documentation is not widely available The measures have been tested on independent data sets for completeness and robustness and are widely accepted Procedures are not published or widely available Procedures have not undergone full scrutiny and testing Data are fully quality controlled peer reviewed and are widely accepted as valid Documentation is complete and widely available The following table describes the processing stage of data and the value to be assigned the data state indicator DS Indicator It is the concatenation of level and class described above Processing Stage 1 Data pass through a communications system and arrive at a processing centre The data resolution is the highest permitted by the technical constraints of the floats and communications system DS I ndicator OA note 1 1A located in space and time 2 prepares the data for distribution on the GTS to global servers and to PIs 4 Real time data are received at global data centres that apply OC including visual inspection of the data These are then distributed to users in near real time 2B note 3 Argo data management User s manual 5 Data are reviewed by Pls and returned to processing centres The processing 2C centres forward the data to the global Argo servers 6 Scientists accept data from various sources com
43. bine them as they see fit with other data and generate a product Results of the scientific analysis may be returned to regional centres or global servers Incorporation of these results improves the quality of the data 7 Scientists working as part of GODAE generate fields of gridded products delivered in near real time for distribution from the global servers Generally these products mostly will be based on data having passed through automated QC procedures 8 Scientists working as part of GODAE generate fields of gridded products delivered with some time delay for distribution from the global servers Generally these products mostly will be based on data having passed through manual or more sophisticated QC procedures than employed on the real time data Notes 1 We need to have a pragmatic approach to what constitutes original or raw data Despite the fact that an instrument may be capable of high sampling rates what is reported from the instrument defines what is considered raw For example Argo floats can certainly sample at finer scales than every 10 db but because of communications all we see for now is data at that or worse vertical resolution Therefore the data coming from the instrument is raw output at 10db resolution 2 The conversion of the raw data stream from the communications system into profiles of variables causes the data state indicator to switch from level 0 to 1 3 Even though the data at g
44. d to 1 good me Parameter Flag previous value before action HISTORY_PREVIOUS_VALUE _FillVal ue 99999 f HISTORY_QCTEST char HISTORY_QCTEST This field records the tests performed when ACTION N_HISTORY N_PROF STRING16 is set to QCP qc performed the test failed when HISTORY_QCTEST long_name ACTION is set to QCF qc failed Documentation of tests performed The QCTEST codes are describe in reference table 11 tests failed in hex form HISTORY_QCTEST conventions Example 0A in hexadecimal form Write tests performed when ACTION lt OCP tests failed when ACTION QCF HISTORY OCTEST FillValue The usage of the History section is described in 5 Using the History section of the Argo netCDF Structure Argo data management User s manual Gc Z 2 3 Trajectory format An Argo trajectory file contains all received locations of an Argo float There is one trajectory file per float In addition to locations a trajectory file may contain measurements such as temperature salinity or conductivity performed at some or all locations For file naming conventions see 4 1 2 3 1 Dimensions and definitions Name Definition Comment DATE_TIME DATE_TIME 14 This dimension is the length of an ASCII date and time value Date time convention is YYYYMMDDHHMISS YYYY year MM month DD day HH hour of the day MI minutes SS seconds Date and time values are always in universal ti
45. date 20031028075500 FTP root number 1 ftp ftp ifremer fr ifremer argo dac FTP root number 2 ftp usgodae usgodae org pub outgoing argo dac GDAC node CORIOLIS file profiler_type institution date_update aoml 13857 13857_meta nc 0845 A0 20030214155117 aoml 13857 13857_meta nc 0845 A0 20030214155354 aoml 13857 13857_meta nc 0845 A0 20030214155619 jma 29051 29051 meta nc 846 A 20030212125117 ima 29051 29051 meta nc 846 A 20030212125117 Argo data management User s manual a S 3 Reference tables 3 1 Reference table 1 data type The following table contains the list of acceptable contents for DATA_TYPE field Name Argo profile Argo trajectory Argo meta data Argo technical data 3 2 Reference table 2 Argo quality control flag scale 3 2 1 Reference table 2 measurement flag scale n Meaning Real time comment Delayed mode comment ee e performed consistent and a statistical error estimate is supplied data 3 Bad data that Test 15 or Test 16 or Test 17 failed and all An adjustment has been applied but are potentially jother real time QC tests passed These data the value may still be bad correctable are not to be used without scientific correction A flag 3 may be assigned by an operator during additional visual QC for bad data that may be corrected in delayed mode 4 Bad data Data have failed one or more of the real time Bad data Not adjustable QC tests excluding Test 16
46. e date time IS 19500101000000 January 11950 00 00 00 Each item of this section has a N PROF number of profiles dimension PLATFORM NUMBER PROJECT NAME PI NAME STATION PARAMETERS CYCLE NUMBER Argo data management Definition char PLATFORM NUMBER N PROF STRING8 PLATFORM NUMBER long name lt Float unigue identifier PLATFORM NUMBER conventions lt WMO float identifier A9IIIII PLATFORM NUMBER FillValue char PROJECT NAME N PROF STRING64 PROJECT NAME comment lt Name of the project PROJECT NAME FillValue char PI NAME N PROF STRING64 PI NAME comment lt Name of the principal investigator PI NAME FillValue char STATION PARAMETERS N PROF N PARAM STRINGI6 STATION PARAMETERS long name lt List of available parameters for the station STATION PARAMETERS conventions lt Argo reference table 3 STATION PARAMETERS FillValue int CYCLE NUMBER N PROF CYCLE NUMBER long name Float cycle number CYCLE NUMBER conventions lt 0 N 0 launch cycle if exists 1 first complete cycle CYCLE NUMBER FillValue 99999 Comment WMO float identifier WMO is the World Meteorological Organization This platform number is unique Example 6900045 Name of the project which operates the profiling float that performed the profile Example GYROSCOPE EU project for ARGO program Name of the principal investigator in charge of
47. eference table 12 Example ARGQ Automatic QC of data reported in reat time has been performed Name of the software that performed the action This code is institution dependent Example WJO Version of the software This name is institution dependent Example 1 0 Code of the reference database used for quality control in conjunction with the software This code is institution dependent Example WOD2001 Date of the action Example 20011217160057 Name of the action The action codes are described in reference table 7 Example QCF for QC failed User s manual HISTORY_PARAMETER HISTORY_PREVIOUS_VALUE HISTORY_INDEX_DIMENSION HISTORY START INDEX HISTORY STOP INDEX HISTORY OCTEST Char HISTORY PARAMETER N HISTORY STRING16 HISTORY PARAMETER long name Station parameter action is performed on HISTORY PARAMETER conventions Argo reference table 3 HISTORY PARAMETER FillValue Float HISTORY_PREVIOUS_VALUE N_HIST ORY N_HISTORY2 HISTORY PREVIOUS VALUE long na me lt Parameter Flag previous value before action HISTORY PREVIOUS VALUE FillVal ue 99999 f char HISTORY INDEX DIMENSION N HIS TORY int HISTORY START INDEX N HISTORY HISTORY START INDEX long name Start index action applied on HISTORY START INDEX FillValue 99999 int HISTORY STOP INDEX N HISTORY HISTORY STOP INDEX long name lt Stop index action applied on HISTORY S
48. ensors on the float SENSOR conventions lt Argo reference table 3 SENSOR FillValue char SENSOR MAKER N PARAM STRING256 SENSOR MAKER long name lt The name of the manufacturer SENSOR MAKER FillValue char SENSOR MODEL N PARAM STRING256 SENSOR MODEL long name lt Type of sensor SENSOR MODEL FillValue char SENSOR SERIAL NO N PARAM STRING16 SENSOR SERIAL NO long name lt The serial number of the sensor SENSOR SERIAL NO FillValue char SENSOR UNITS N PARAM STRING16 SENSOR UNITS long name The units of accuracy and resolution of the sensor SENSOR UNITS FillValue float SENSOR ACCURACY N PARAM SENSOR ACCURACY long name lt The accuracy of the sensor SENSOR ACCURACY FillValue 99999 f float SENSOR RESOLUTION N PARAM SENSOR RESOLUTION long name The resolution of the sensor SENSOR RESOLUTION FillValue 99999 f 2 4 6 Float calibration information Comment Parameters measured by sensors of the float The parameter names are listed in reference table 3 Examples TEMP PSAL CNDC TEMP temperature in celsius PSAL practical salinity in psu CNDC conductvity in mhos m Name of the manufacturer of the sensor Example SEABIRD Model of sensor Example SBE41 Serial number of the sensor Example 2646 036 073 Units of accuracy of the sensor Example psu Accuracy of the sensor Example 0 005 Resolution of the sen
49. hat the fields HISTORY_SOFTWARE HISTORY_SOFTWARE_RELEASE and HISTORY_REFERENCE are used together to document the name and version of software used to carry out the delayed QC and the reference database used in the process The contents of these three fields are defined locally by the person carrying out the QC Example History entry to record that delayed mode QC has been carried out Field Sample Explanation This is a locally defined name for the delayed mode QC process employed HISTORY_SOFTWARE_RELEAS 1 This is a locally defined indicator that identifies E what version of the QC software is being used This is a locally defined name for the reference database used for the delayed mode QC process HISTORY_DATE 2003080500 The year month day hour minute second that HISTORY_ACTION IP Selected from the list in reference table 7 HISTORY_PARAMETER FillValue This field does not apply 1 Note 1 The present version of delayed mode QC only tests salinity and as such it is tempting to place PSAL in the _PARAMETER field In future delayed mode QC tests may include tests for temperature pressure and perhaps other parameters For this reason simply addressing the software and version number will tell users what parameters have been tested Argo data management User s manual 57 5 2 Recording processing stages Each entry to record the processing stages has a similar form An example is provided to show how
50. illValue This field does not apply HISTORY_DATE 2003080500 The year month day hour minute second that 0000 the process ran HISTORY_QCTEST 1BE This is the result of all tests with IDs from 2 to 256 having been applied see reference table 11 Record 2 Documenting the tests that were failed Field Sample Explanation HISTORY_INSTITUTION Selected from the list in reference table 4 HISTORY_STEP ARGQ Selected from the list in reference table 12 HISTORY_SOFTWARE FillValue This field does not apply HISTORY_SOFTWARE_RELEAS FillValue This field does not apply E HISTORY_REFERENCE FillValue This field does not apply HISTORY_DATE 2003080500 The year month day hour minute second that 0000 the process ran HISTORY_ACTION QCF Selected from the list in reference table 7 HISTORY_PARAMETER FillValue This field does not apply HISTORY_START_PRES FillValue This field does not apply Argo data management User s manual HISTORY_STOP_PRES FillValue This field does not apply HISTORY PREVIOUS VALUE FillValue This field does not apply HISTORY_QCTEST AO This is the result when data fail tests with IDs of 32 and 128 see reference table 11 5 4 Recording changes in values The PIs have the final word on the content of the data files in the Argo data system In comparing their data to others there may arise occasions when changes may be required in the data We will use the example of recomputation of where the float fi
51. ime data file with no adjusted data has an adjusted section with fill values lt PARAM gt _ADJUSTED lt PARAM gt _ADJUSTED_QC and lt PARAM gt _ADJUSTED_ERROR The Argo profile delayed mode QC is described in Argo quality control manual by Annie Wong et Al Name lt PARAM gt lt PARAM gt _QC lt PARAM gt _ADJ USTED lt PARAM gt _ADJUSTED_ QC lt PARAM gt ADJUSTED E RROR Argo data management Definition float lt PARAM gt N PROF N LEVELS lt PARAM gt long name lt X gt lt PARAM gt _FillValue lt X gt lt PARAM gt units lt X gt lt PARAM gt valid_min lt X gt lt PARAM gt valid_max lt X gt lt PARAM gt comment lt X gt lt PARAM gt C_format lt X gt lt PARAM gt FORTRAN format lt X gt lt PARAM gt resolution lt X gt char lt PARAM gt _QC N_PROF N_LEVELS lt PARAM gt _QC long_name quality flag lt PARAM gt _QC conventions Argo reference table 2 lt PARAM gt OC FillValue float lt PARAM gt ADJUSTED N PROF N LEVELS lt PARAM gt ADJUSTED long name lt lt X gt lt PARAM gt ADJUSTED FillValue lt X gt lt PARAM gt ADJUSTED units lt X gt lt PARAM gt ADJUSTED valid min lt X gt lt PARAM gt ADJUSTED valid max lt X gt lt PARAM gt ADJUSTED comment lt X gt lt PARAM gt ADJUSTED C format lt X gt lt PARAM gt ADJUSTED FORTRAN format lt X gt lt PARAM gt ADJUSTED resolution
52. ion from an Argo float This information is registered for each cycle performed by the float The number and the type of technical information is different from one float model to an other To be flexible for each cycle the name of the parameters and their values are recorded The name of the parameters recorded may therefore change from one model of float to another For file naming conventions see 4 1 2 5 1 Dimensions and definitions Name Definition Comment DATE_TIME DATE_TIME 14 This dimension is the length of an ASCII date and time value Date and time values are always in universal time coordinates UTC Date_time convention is YYYYMMDDHHMISS YYYY year MM month DD day HH hour of the day MI minutes SS seconds Examples 20010105172834 January 5 2001 17 28 34 19971217000000 December 17 1997 00 00 00 STRING256 STRING256 String dimensions from 2 to 256 STRING64 STRING64 STRING32 STRING32 STRING16 STRING16 STRING8 STRING8 STRING4 STRING4 STRING2 STRING2 N_TECH_PARAM N_TECH_PARAM lt int Number of technical parameters value gt Example N_TECH_PARAM 25 Twenty five different parameters are recorded for each cycle N CYCLE N_CYCLE UNLIMITED Number of cycles performed by the float Argo data management User s manual GO 2 5 2 General information on the technical data file This section contains information about the technical data file itself PLATFORM_NUMBER DATA_T
53. istory section 22 08 2005 fa MEASUREMENT dimension removed 07 11 2005 Claudia Schmid create reference table 14 for technical parameter names Minor typo corrections 07 11 2005 Thierry Carval add a GPS code for position accuracy in ref Table 5 08 11 2005 Ann Thresher exemple of sensor type in meta data 2 01 09 11 2005 Annie Wong 83 2 2 usage of lt PARAM ADJUSTED OC gt and lt PARAM 0C gt Reference table 2 updated gc 3 and 4 11 11 2005 Thierry Carval 82 2 4 82 3 4 accept adjusted parameters in real time files 11 11 2005 Thierry Carval 82 2 6 history section for multi profile files is empty 11 11 2005 Thierry Carval 81 3 82 2 3 82 3 4 real time adjusted data 11 11 2005 Thierry Carval 82 4 8 highly desirable meta data description 30 11 2005 Annie Wong 83 2 1 update on flag 4 real time comment 2 1 20 12 2005 Thierry Carval remove erroneous blanks ex Argo reference table 3 2 1 01 03 2006 Mark Ignaszewski 2 3 6 Change HISTORY INDEX to int Change HISTORY REFERENCE to STRING64 Change to dependent in all sections Remove PLATFORM SERIAL NO from desirable parameter table Add No OC performed to Table 2a Change FORMAT VERSION to 2 2 in all sections Argo data management User s manual Gc 1 Introduction This document is the Argo data user s manual It contains the description of the formats and files produced by the Argo DACS 1 1 Argo program data management context The objec
54. l parameter names Most technical parameter codes are not standardized However certain usual parameter names are available Parameter name Meaning SURFACE_PRESSURE BATTERY_VOLTAGE Battery voltage in volts Argo data management User s manual a 4 Data access The whole Argo data set is available in real time and delayed mode from the global data centres GDACs The internet addresses are e http www usgodae org argo argo html e http www coriolis eu org cdc The FTP addresses are e fip usgodael fnmoc navy mil pub outgoing argo e ftp ftp ifremer fr ifremer argo The 2 GDACs offer the same data set that is mirrored in real time 4 1 File naming convention on GDacs The GADC ftp sites comply with the following naming conventions Profile data e lt FloatID gt _prof nc for a file containing all the profiles of a float Example 1900045_prof nc e lt R D gt lt FHoatID gt lt xxx gt lt D gt nc for an individual profile R for RealTime and D for Delayed Mode data xxx is the cycle number If the profile is a descending profile D is added to the cycle number Examples R1900045_003 nc R1900045_003D nc Trajectory Data e lt FloatID gt traj nc Example 1900045_traj nc Metadata e lt FloatID gt meta nc Example 1900045 meta nc Technical Data e lt FoatID gt tech nc Example 1900045 tech nc 4 2 Other data sources All Argo data are available from Argo GDACs Global data centres
55. lag scale is described in the reference table 2 Example 1 the date and time seems correct Julian day of the location of the profile 1 The integer part represents the day the decimal part represents the time of the profile Date and time are in universal time coordinates The julian day is relative to REFERENCE_DATE_TIME Example 18833 8013889885 July 25 2001 19 14 00 Latitude of the profile Unit degree north This field contains the best estimated latitude The latitude value may be improved in delayed mode The measured locations of the float are located in the trajectory file Example 44 4991 44 29 56 76 N Longitude of the profile Unit degree east This field contains the best estimated longitude The longitude value may be improved in delayed mode The measured locations of the float are located in the trajectory file Example 16 7222 16 43 19 92 E Quality flag on position The flag on position is set according to LATITUDE LONGITUDE quality The flag scale is described in the reference table 2 Example 1 position seems correct Name of the system in charge of positioning the float locations from reference table 9 Examples ARGOS Global quality flag on the PARAM profile PARAM is among the STATION_PARAMETERS The overall flag is set to indicate the percentage of good data in the profile as described in reference table 2a Example PROFILE_TEMP_QC A the
56. le 0 cycle 2 does not match the period argo data management Some Argo floats start sending a cycle 0 with a shorter cycle time than the next cycles Some other floats directly start their mission with a cycle standard cycle Argo data management User s manual GI 1 3 Real time and Delayed mode data Data from Argo floats are transmitted from the float passed through processing and automatic quality control procedures as quickly as possible after the float begins reporting at the surface The target is to issue the data to the GTS and Global Data servers within 24 hours of surfacing or as quickly thereafter as possible These are called real time data The data are also issued to the Principle Investigators on the same schedule as they are sent to the Global servers These scientists apply other procedures to check data quality and the target is for these data to be returned to the global data centres within 6 to 12 months These constitute the delayed mode data The adjustments applied to delayed data may also be applied to real time data to correct sensor drifts for real time users However these real time adjustments will be recalculated by the delayed mode quality control Argo data management User s manual GG IO 2 Formats description 2 1 Overview of the formats Argo data formats are based on NetCDF from Ucar NetCDF network Common Data Form is an interface for array oriented data access and a library
57. lobal data centres use manual or semi automated QC procedures there is often not the intercomparisons to larger data collections and fields that would qualify the data state indicator to be set to class C This is generally only provided by scientific scrutiny of the data 4 The transition from class 2 to 3 occurs when assumptions of scales of variability are applied During the course of normal data processing it is common to catry out some averaging and subsampling This is usually done to exploit oversampling by the instrument and to ensure good measurements are achieved These are considered to be part of the geospatial and temporal referencing process 3 7 Reference table 7 history action codes Code Meaning LIPOV This history group operates on the complete input record Cd QC Quality Coto lt O S SEY Quality Contro SOS Argo data management User s manual EGG BO Time error Profile date time has been erroneously encoded Corrected if possible Station passed through the update program 3 8 Reference table 8 instrument types The instrument type codes comes from WMO table 1770 The WMO instrument types are available on the following web site http www meds sdmm dfo mpo gc ca meds Prog Int J COMM CODES wmotable_e htm ct1770 Code Figure Instrument Ninja no conductivity sensor Ninja SBE conductivity sensor Ninja FSI conductivity sensor 3 9 Reference table 9 positioning sy
58. lution CONDUCTIVITY F10 4 0 0001f F9 3 0 001f urface lt 0 F7 1 0 1f F9 3 0 001f TEMP SEA TEMPERATURE IN n situ measurement degree Celsius 9 3f 99999 f Argo data management User s manual DOXY PRES SAL nam e ITS 90 SCALE F9 3 0 001f TEMP_ uma SEA TEMPERATURE In situ measurement degree Celsius 2 f 40 f 9 3 99999 f FROM DOXY SENSOR F9 3 ITS 90 SCALE 0 001f 3 4 Reference table 4 data centres and institutions codes ra centres and institutions AOML USA BODC United Kingdom ha Institute of Ocean Sciences Canada CSIRO Australia BSH Germany GT GTS used for data coming from WMO GTS network IN incols india C7 bM Z O ME OO MEDS Canada o wmo emeLusa_ spin uw UniversityofWashington USA Research Institute of Vladivostock Russia WH Woods Hole Oceanographic Institution USA 3 5 Reference table 5 location classes ARGOS _ARGOS location classes Estimated accuracy in latitude and longitude O accuracy estimation over 1500m radius Argo data management User s manual 48 3 6 Reference table 6 data state indicators Descriptor Level Data are the raw output from instruments without calibration and not necessarily converted to engineering units These data are rarely exchanged Data have been converted to values independent of detailed instrument knowledge Automated calibrations may have been done Data
59. me Name of technical parameters for this cycle TECHNICAL_PARAMETER_NAME _FillValue TECHNICAL PARAMETER VALUE char Value of the technical parameter TECHNICAL PARAMETER VALUE Example N CYCLE N TECH PARAM 11 5 STRING32 TECHNICAL PARAMETER VALUE long_name Value of technical parameters for this cycle TECHNICAL PARAMETER VALUE _FillValue Most parameter names are not standardized However certain usual parameter names are available in reference table 14 Argo data management User s manual aaa RR 2 6 GDAC FTP directory file format 2 6 1 Profile directory file format The profile directory file describes all individual profile files of the GDAC ftp site Its format is an autodescriptive Ascii with comma separated values The directory file contains e A header with a list of general informations title description project name format version date of update ftp root addresses GDAC node e A table with a description of each file of the GDAC ftp site This table is a comma separated list Profile directory format definition Title Profile directory file of the Argo Global Data Assembly Center Description The directory file describes all individual profile files of the argo GDAC ftp site Project ARGO Format version 2 0 Date of update YYYYMMDDHHMISS FTP root number 1 ftp ftp ifremer fr ifremer argo dac FTP root number 2 ftp usgodae usgodae org pub o
60. me coordinates UTC Examples 20010105172834 January 5 2001 17 28 34 19971217000000 December 17 1997 00 00 00 STRING256 STRING256 STRING64 STRING64 STRING32 STRING32 STRING16 STRING16 STRING8 STRING8 STRING4 STRING4 STRING2 STRING2 N PARAM N PARAM lt int Maximum number of parameters measured or calculated for a pressure value gt sample Examples pressure temperature N PARAM lt 2 pressure temperature salinity N PARAM lt 3 pressure temperature conductivity salinity N PARAM 4 N_MEASUREMENT N_MEASUREMENT This dimension is the number of recorded locations and measurements of the unlimited file N_CYCLE N_CYCLE lt int Maximum number of cycles performed by the float value gt This dimension depends on the data set Example N_CYCLE 100 N_HISTORY N HISTORY lt int Maximum number of history records for a location This dimension depends value gt on the data set Exemple N_HISTORY 10 N_HISTORY2 N HISTORY2 lt int Maximum dimension of the history record with respect to the time axis This value gt dimension depends on the data set Example N HISTORY2 2 if only two values were corrected String dimensions from 2 to 256 Argo data management User s manual 22 2 3 2 General information on the trajectory file This section contains information about the whole file Name Definition Comment DATA_TYPE char DATA_TYPE STRING16 This field contains the type of data
61. oat meta data T STATUS JULD ASCENT START STATUS N CYCLE 1 date is estimated date is transmitted by the float JULD_ASCENT_START_STATUS conventio 9 date is unknown ns 0 Nominal 1 Estimated 2 Transmitted JULD ASCENT START STATUS FillValue un 1 JULD_ASCENT_END double JULD_ASCENT_END N_CYCLE Julian day UTC of the end of the ascending profile JULD_ASCENT_END long_name End Example date of the ascending profile 18833 8013889885 July 25 2001 19 14 00 JULD_ASCENT_END units days since 1950 01 01 00 00 00 UTC JULD_ASCENT_END conventions Relative julian days with decimal part as part of day JULD ASCENT END FillValue lt 999999 JULD ASCENT END Char date comes from the float meta data _STATUS JULD_ASCENT_END_STATUS N_CYCLE date is estimated JULD_ASCENT_END_STATUS conventions 2 date is transmitted by the float 0 Nominal 1 Estimated 2 date is unknown Transmitted JULD ASCENT END STATUS FillValue wu JULD DESCENT STA double Julian day UTC of the beginning of the descending profile RT JULD DESCENT START N CYCLE Example JULD DESCENT START long name lt 18833 8013889885 July 25 2001 19 14 00 Descent start date of the cycle JULD DESCENT START units lt days since 1950 01 01 00 00 00 UTC JULD DESCENT START conventions Relative julian days with decimal part as part of day JULD DESCENT START FillValue lt 99999 Argo data management User
62. omatic QC of data reported in real time reference table 12 has been performed HISTORY STEP FillValue HISTORY SOFTWARE Char HISTORY SOFTWARE Name of the software that performed the action N HISTORY N PROF STRING4 This code is institution dependent HISTORY SOFTWARE long name Example WJO Name of software which performed action HISTORY SOFTWARE conventions lt nstitution dependent HISTORY SOFTWARE FillValue HISTORY SOFTWARE RELEASE Char HISTORY SOFTWARE RELEASE Version of the software N HISTORY N PROF STRING4 This name is institution dependent HISTORY SOFTWARE RELEASE long Example 1 0 name Version release of software which performed action HISTORY_SOFTWARE_RELEASE conv entions Institution dependent HISTORY_SOFTWARE_RELEASE Fill Value HISTORY REFERENCE char HISTORY REFERENCE Code of the reference database used for guality N HISTORY N PROF STRING64 control in conjunction with the software HISTORY REFERENCE long name lt This code is institution dependent Reference of database Example WOD2001 HISTORY REFERENCE conventions nstitution dependent HISTORY REFERENCE FillValue HISTORY DATE char HISTORY DATE N HISTORY Date of the action N PROF DATE TIME Example 20011217160057 HISTORY DATE long name lt Date the history record was created HISTORY DATE conventions lt YYYYMMDDHHMI SS Argo data management User s manual THIS
63. on the adjusted values as determined by the mandatory When no adjustment is delayed mode QC process performed the FillValue is inserted lt PARAM gt ADJUSTED ERROR C format lt X gt lt PARAM gt ADJUSTED ERROR FORTRAN format lt lt X gt lt PARAM gt _ADJUSTED_ERROR resolution lt X gt Example of a profiling float performing temperature measurements with adjusted values of temperature Parameter definition PRES TEMP TEMP_ADJ USTED float PRES N_PROF N_LEVELS PRES long_name SEA PRESSURE sea surface 0 PRES FillValue 99999 f PRES units decibar PRES valid_min 0 f PRES valid_max 1200 f PRES comment In situ measurement sea surface 0 PRES C format 7 1f PRES FORTRAN format F7 1 PRES resolution 0 1f char PRES_QC N_PROF N_LEVELS PRES_QC long_name quality flag PRES OC conventions Argo reference table 2 PRES OC FillIValue float TEMP N PROF N LEVELS TEMP long name lt SEA TEMPERATURE TEMP FiliIValue 999909 f TEMP units lt degree Celsius TEMP valid min 2 f TEMP valid max lt 40 f TEMP comment In situ measurement TEMP C_format 9 3f TEMP FORTRAN format F9 3 TEMP resolution 0 001f char TEMP_QC N_PROF N_LEVELS TEMP_QC long_name quality flag TEMP_QC conventions Argo reference table 2 TEMP_QC _FillValue float TEMP ADJUSTED N PROF N_LEVELS TEMP ADJUSTED long name lt
64. only B descending and ascending profiles Name of the project which operates the profiling float that performed the profile Example GYROSCOPE EU project for Argo program Code of the data centre in charge of the float data management The data centre codes are described in the reference table 4 Example ME for MEDS Name of the principal investigator in charge of the profiling float Example Yves Desaubies This field describes any anomaly or problem the float may have had Example the immersion drift is not stable User s manual 2 4 4 Float deployment and mission information Name LAUNCH_DATE LAUNCH_LATITUDE LAUNCH_LONGITUDE LAUNCH OC START DATE START DATE OC DEPLOY PLATFORM DEPLOY MISSION DEPLOY AVAILABLE PRO FILE ID END MISSION DATE END MISSION STATUS Argo data management Definition char LAUNCH DATE DATE TIME LAUNCH DATE long name lt Date UTC of the deployment LAUNCH DATE conventions lt YYYYMMDDHHMISS LAUNCH DATE FillValue double LAUNCH LATITUDE LAUNCH LATITUDE long name Latitude of the float when deployed LAUNCH LATITUDE units lt degrees north LAUNCH LATITUDE FillValue 99999 LAUNCH LATITUDE valid min 90 LAUNCH LATITUDE valid max 90 double LAUNCH LONGITUDE LAUNCH LONGITUDE long name Longitude of the float when deployed LAUNCH LONGITUDE units lt degrees east LAUNCH_LONGITUDE _ FillValue 99999 L
65. r of calibrations N_PARAM number of parameters dimension If no calibration is available N_CALIB is set to 1 all values of calibration section are set to fill values Name Definition Comment PARAMETER char PARAMETER N_PROF N_CALIB Name of the calibrated parameter The list of N_PARAM STRING16 parameters is in reference table 3 PARAMETER long_name List of Example PSAL parameters with calibration information PARAMETER conventions Argo reference table 3 PARAMETER FillValue SCIENTIFIC CALIB EQUATION Char Calibration eguation applied to the SCIENTIFIC CALIB EOUATION N PROF parameter N CALIB N PARAM STRING256 Example SCIENTIFIC CALIB EOUATION long name Tc al T a0 Calibration equation for this parameter SCIENTIFIC CALIB EOUATION FillValue SCIENTIFIC CALIB COEFFICIENT Char Calibration coefficients for this eguation SCIENTIFIC CALIB COEFFICIENT N PROF Example N CALIB N PARAM STRING256 al 0 99997 a0 0 0021 SCIENTIFIC CALIB COEFFICIENT long na me lt Calibration coefficients for this eguation SCIENTIFIC CALIB COEFFICIENT FillValue wu SCIENTIFIC CALIB COMMENT Char Comment about this calibration SCI ENTIFIC CALIB COMMENT N PROF Example N CALIB N PARAM STRING256 The sensor is not stable SCIENTIFIC CALIB COMMENT long name Comment applying to this parameter calibration SCIENTIFIC CALIB COMMENT FillValue CALIBRATION DATE Char CALIBRATION DATE N PROF
66. rst surfaced as an example This computation process can be carried out once all of the messages from a float have been received Not all real time processing centres make this computation but it can be made later on and added to the delayed mode data If this is the case we would insert the new position of the profile into the latitude and longitude fields in the profile and we would record the previous values in two history entries Recording these allows us to return to the original value if we have made an error in the newly computed position The two history entries would look as follows Example Changed latitude Field Sample Explanation HISTORY_SOFTWARE_RELEAS FillValue This field does not apply E HISTORY_REFERENCE FillValue This field does not appl HISTORY_DATE 2003080500 The year month day hour minute second that 0000 the process ran HISTORY_ACTION Selected from the list in reference table 7 HISTORY_PARAMETER LAT A new entry for reference table 3 created by institution Cl to indicate changes have been made in the latitude HISTORY_START_PRES FillValue This field does not apply HISTORY_STOP_PRES FillValue This field does not appl HISTORY PREVIOUS VALUE 23 456 This is the value of the latitude before the change was made HISTORY_QCTEST FillValue This field does not appl 1 Be sure that the new value is recorded in the latitude and longitude of the profile section 2 Be sure that the POSITION_ QC flag is se
67. s R13857_002 nc 199708091921 0 072 17 659 A 0845 A0 20030214155354 aoml 13857 profiles R13857_003 nc 199708201845 0 543 19 622 A 0845 A0 20030214155619 Argo data management User s manual jma 29051 profiles R29051 025 nc 200110250010 30 280 143 238 P 846 A 20030212125117 jma 29051 profiles R29051 026 nc 200111040004 30 057 143 206 P 846 A 20030212125117 2 6 2 Trajectory directory format The trajectory directory file describes all trajectory files of the GDAC ftp site Its format is an autodescriptive Ascii with comma separated values The directory file contains e A header with a list of general informations title description project name format version date of update ftp root addresses GDAC node e A table with a description of each file of the GDAC ftp site This table is a comma separated list Trajectory directory format definition Title Trajectory directory file of the Argo Global Data Assembly Center Description The directory file describes all trajectory files of the argo GDAC ftp site Project ARGO Format version 2 0 Date of update YYYYMMDDHHMISS FTP root number 1 ftp ftp ifremer fr ifremer argo dac FTP root number 2 ftp usgodae usgodae org pub outgoing argo dac GDAC node CORIOLIS file latitude_max latitude_min longitude_max longitude_min profiler_type institution date_update e file path and file name on the ftp site Fill value none this fiel is mandator
68. s manual JULD_DESCENT_STA Char JULD_DESCENT_START_STATUS N_CYCL RT_STATUS E ions 0 Nominal 1 Estimated 2 Transmitted JULD DESCENT START STATUS FillValu ez JULD DESCENT EN doublej ULD DESCENT END N CYCLE D JULD DESCENT END long name Descent end date of the cycle JULD DESCENT END units lt days since 1950 01 01 00 00 00 UTC JULD DESCENT END conventions Relative julian days with decimal part as part of day JULD DESCENT END FillValue lt 999999 char JULD DESCENT END STATUS N CYCLE JULD DESCENT EN D STATUS JULD DESCENT END STATUS conventio ns 0 Nominal 1 Estimated 2 Transmitted JULD DESCENT END STATUS FillValue un 1 double JULD_START_TRANSMISSION N_CYCLE JULD_START_TRANSMISSION long_name Start date of transmssion JULD START TRANSMISSION units days since 1950 01 01 00 00 00 UTC JULD START TRANSMISSION convention s lt Relative julian days with decimal part as part of day JULD START TRANSMISSION FillValue 999999 char JULD_START_TRANSMISSION_STATUS N _CYCLE JULD_START_TRANSMISSION_STATUS c onventions 0 Nominal 1 Estimated 2 Transmitted JULD START TRANSMISSION STATUS FillValue char GROUNDED N CYCLE GROUNDED long name Did the profiler touch the ground for that cycle GROUNDED conventions Y N U GROUNDED FillValue JULD_START_TRAN SMISSION JULD_START_TRAN SMISSION_ STATUS GROUNDED Argo da
69. sition system from reference table 9 ARGOS or GPS are 2 positioning systems Example ARGOS Rate of drift of the float internal clock Unit decisecond day Example 1 57 Model of the float Example APEX SBE Name of the manufacturer Example Webb research References of the instrument brand type serial number Example APEX SBE 259 Instrument type from WMO code table 1770 A subset of WMO table 1770 is documented in the reference table 8 Example 846 Webb Research float Seabird sensor User s manual DIRECTION PROJECT NAME DATA CENTRE PI NAME ANOMALY Argo data management char DIRECTION DIRECTION long_name Direction of the profiles DI RECTI ON conventions A ascending profiles B descending and ascending profiles DIRECTION FillValue char PROJ ECT_NAME STRING64 PROJECT NAME long name The program under which the float was deployed PROJECT NAME FillValue char DATA CENTRE STRING2 DATA CENTRE long name lt Data centre in charge of float real time processing DATA_CENTRE conventions Argo reference table 4 DATA CENTRE FillValue char PI NAME STRING64 PI NAME comment Name of the principal investigator PI NAME FillValue char ANOMALY STRING256 ANOMALY long_name Describe any anomalies or problems the float may have had ANOMALY FillValue Direction of the profiles of the float A ascending profiles
70. sor Example 0 001 This section contains information about the calibration of the profiler The calibration described in this section is an instrumental calibration The delayed mode calibration based on a data analysis is described in the profile format Name PARAMETER PREDEPLOYMENT CALIB _EQUATION PREDEPLOYMENT_CALIB _COEFFICIENT Argo data management Definition char PARAMETER N_PARAM STRING16 PARAMETER long_name List of parameters with calibration information PARAMETER conventions Argo reference table 3 PARAMETER FillValue char PREDEPLOYMENT_CALIB_EQUATION N_PARAM STRING2 56 PREDEPLOYMENT CALIB EOUATION long name Calibration eguation for this parameter PREDEPLOYMENT CALIB EQUATION FillValue char PREDEPLOYMENT CALIB COEFFICIENT N PARAM STRIN G256 PREDEPLOYMENT CALIB COEFFICIENT long name lt Calibration coefficients for this eguation Comment Parameters measured on this float The parameter names are listed inreference table 3 Examples TEMP PSAL CNDC TEMP temperature in celsius PSAL practical salinity in psu CNDC conductvity in mhos m Calibration equation for this parameter Example Tc al T a0 Calibration coefficients for this equation Example al 0 99997 a0 0 0021 User s manual PREDEPLOYMENT CALIB COEFFICIENT FillValue PREDEPLOYMENT_CALIB char Comments applying to this parameter _COMMENT PREDEPLOYMENT CALIB COMME
71. stem Code Description ARGOS ARGOS positioning system GPS positioning system 3 10 Reference table 10 transmission system Code Description ARGOS IRIDIUM Iridium transmission system ORBCOMM Orbcomm transmission system 3 11 Reference table 11 QC Test Ids Argo data management User s manual ID Test 8 Impossible Location test Argo data management User s manual 52 3 12 Reference table 12 history steps codes Code Meaning ARFM Convert raw data from telecommunications system to a processing format ARGQ Automatic QC of data reported in real time has been performed IGO3 Checking for duplicates has been performed ARSQ Delayed mode QC has been performed ARCA Calibration has been performed ARUP Real time data have been archived locally and sent to GDACs ARDU Delayed data have been archived locally and sent to GDACs RFMT If individual centres wish to record other codes they may add to this list as they feel is appropriate Argo data management User s manual Gc 3 3 13 Reference table 13 ocean codes The ocean codes are used in the GDAC ftp directory files The ocean code is not used in Argo NetCDF files Code Meaning Atlantic ocean area __ Indian ocean area P OO Pacific ocean area e The Pacific Atlantic boundary is 70 W e The Pacific Indian boundary is 145 E e The Atlantic Indian boundary is 20 E 3 14 Reference table 14 technica
72. t cycle number of the measurement CYCLE NUMBER conventions lt 0 N 0 launch cycle 1 first complete cycle CYCLE NUMBER FillValue 99999 float lt PARAM gt N MEASUREMENT lt PARAM gt long_name lt X gt lt PARAM gt FillValue lt X gt lt PARAM gt units lt X gt lt PARAM gt valid_min lt X gt lt PARAM gt valid_max lt X gt lt PARAM gt comment lt X gt lt PARAM gt C_format lt X gt lt PARAM gt FORTRAN_ format lt X gt lt PARAM gt resolution lt X gt char lt PARAM gt _QC N_MEASUREMENT lt PARAM gt _QC long_name quality flag lt PARAM gt _QC conventions Argo reference table 2 lt PARAM gt _QC FillValue float lt PARAM gt ADJUSTED N MEASUREMENT lt PARAM gt ADJUSTED long name lt lt X gt lt PARAM gt _ADJUSTED _FillValue lt X gt lt PARAM gt ADJUSTED units lt X gt lt PARAM gt _ADJ USTED valid_min lt X gt lt PARAM gt _ADJ USTED valid_max lt X gt lt PARAM gt ADJUSTED comment lt X gt lt PARAM gt ADJUSTED C format lt X gt lt PARAM gt ADJUSTED FORTRAN format lt lt X gt lt PARAM gt _ADJUSTED resolution lt X gt char lt PARAM gt ADJUSTED OC N MEASUREMENT lt PARAM gt ADJUSTED OC long name guality flag lt PARAM gt ADJUSTED OC conventions Argo reference table 2 lt PARAM gt ADJUSTED OC FillValue float lt PARAM gt ADJUSTED ERROR N MEASUREM EN
73. t to 5 to indicate to a user that the value now in the position has been changed from the original one that was there 3 Be sure to record the previous value in history entries It is also sometimes desirable to record changes in quality flags that may arise from reprocessing data through some QC procedures In this example assume that whereas prior to the analysis all temperature values from 75 to 105 dbars were considered correct after the analysis they are considered wrong The history entry to record this would look as follows Argo data management User s manual 60 Example Changed flags Field Sample Explanation HISTORY_SOFTWARE_RELEAS FillValue This field does not apply E HISTORY_REFERENCE FillValue This field does not apply HISTORY_DATE 2003080500 The year month day hour minute second that 0000 the process ran HISTORY PREVIOUS VALUE 1 This is the value of the guality flag on temperature readings before the change was made HISTORY OCTEST FillValue This field does not apply Notes 1 The new QC flag of 4 to indicate wrong values would appear in the lt param gt OC field Argo data management User s manual
74. ta management JULD_DESCENT_START_STATUS convent 9 date comes from the float meta data 1 date is estimated 2 date is transmitted by the float date is unknown Julian day UTC of the end of the descending profile Example 18833 8013889885 J uly 25 2001 19 14 00 date comes from the float meta data date is estimated date is transmitted by the float date is unknown Julian day UTC of the beginning of data transmission Example 18833 8013889885 J uly 25 2001 19 14 00 date comes from the float meta data date is estimated date is transmitted by the float date is unknown GROUNDED indicates if the float touched the ground for that cycle Format Y N U Examples Y yes the float touched the ground N no U unknown User s manual cc 28 2 3 6 History information This measurement section contains history information for each action performed on each Each item of this section has a N_MEASUREMENT number of locations or measurements N HISTORY number of history records dimension HISTORY_INSTITUTION HISTORY_STEP HISTORY_SOFTWARE HISTORY_SOFTWARE_RELEASE HISTORY_REFERENCE HISTORY_DATE HISTORY_ACTION Argo data management Definition char HISTORY_INSTITUTION N HISTORY STRING4 HISTORY INSTITUTION long name Institution which performed action HISTORY INSTITUTION conventions Argo reference table 4 HISTORY INSTITUTION FillValue
75. tains information about the whole file Name Definition DATA_TYPE char DATA_TYPE STRING16 DATA_TYPE comment Data type DATA_TYPE _FillValue FORMAT_VERSION char FORMAT VERSION STRING4 FORMAT VERSION comment File format version FORMAT VERSION FillValue HANDBOOK VERSION char HANDBOOK VERSION STRING4 HANDBOOK VERSION comment Data handbook version HANDBOOK_VERSION _ FillValue DATE_CREATION char DATE CREATION DATE TIME DATE CREATION comment lt Date of file creation DATE CREATION conventions YYYYMMDDHHMISS DATE_CREATION _ FillValue DATE_UPDATE char DATE_UPDATE DATE_TIME DATE_UPDATE long_name Date of update of this file DATE_UPDATE conventions YYYYMMDDHHMISS DATE UPDATE FillValue Argo data management Comment This field contains the type of data contained in the file The list of acceptable data types is in the reference table 1 Example Argo meta data File format version Example 2 2 Version number of the data handbook This field indicates that the data contained in this file are managed according to the policy described in the Argo data management handbook Example 1 0 Date and time UTC of creation of this file Format YYYYMMDDHHMISS Example 20011229161700 December 29 2001 16 17 00 Date and time UTC of update of this file Format YYYYMMDDHHMISS Example 20011230090500 December 30 2001 09 05 0
76. technical data File format version Example 2 2 Version number of the data handbook This field indicates that the data contained in this file are managed according to the policy described in the Argo data management handbook Example 1 0 Code of the data centre in charge of the float data management The data centre codes are described in the reference table 4 Example ME for MEDS Date and time UTC of creation of this file Format YYYYMMDDHHMISS Example 20011229161700 December 29 2001 16 17 00 Date and time UTC of update of this file Format YYYYMMDDHHMISS Example 20011230090500 December 30 2001 09 05 00 User s manual aaa 2 5 3 Technical data This section contains a set of technical data for each profile There are N TECH PARAM eg 25 technical parameters recorded for each cycle For each cycle for each technical parameter the name of the parameter and the value of the parameter are recorded The parameter name and its value are recorded as strings of 32 characters The naming convention for TECHNICAL PARAMETER NAME is e Upper case letters only e No space in the name use underscore Definition Comment TECHNICAL PARAMETER NAME char Name of the technical parameter TECHNICAL PARAMETER NAME Example N CYCLE N TECH PARAM BATTERY VOLTAGE STRING32 See reference table 14 for standard technical parameter TECHNICAL PARAMETER NAME Ij names ong_na
77. temperature profile contains only good values l Assume that a float profiles on its ascent When the float first comes to the surface it begins to transmit data Each data transmission has a time attached to it and the earliest time is what is recorded in JULD It is possible that the first transmission from a float cannot be used to derive its location In this case the time of location JULD_LOCATION is different and later than the time of the profile Argo data management User s manual Gc AS PROFILE PSAL OC C the salinity profile contains 50 to 75 good values Argo data management User s manual TO 2 2 4 Measurements for each profile This section contains information on each level of each profile Each variable in this section has a N PROF number of profiles N LEVELS number of pressure levels dimension The original data received from the float and examined by real time quality control should be placed in the lt PARAM gt and the QC flags set by the real time process should be placed in the lt PARAM gt OC field The values and flags in the lt PARAM gt fields should never be altered Each parameter can be adjusted in delayed mode but also in real time if appropriate In that case lt PARAM gt _ADJUSTED contains the adjusted values lt PARAM gt ADJUSTED OC contains the QC flags set by the delayed mode process and lt PARAM gt _ADJUSTED_ERROR contains the adjustment uncertainties A real t
78. tive of Argo program is to operate and manage a set of 3000 floats distributed in all oceans with the vision that the network will be a permanent and operational system The Argo data management group is creating a unique data format for internet distribution to users and for data exchange between national data centres DACs and global data centres GDACS Profile data metadata trajectories and technical data are included in this standardization effort The Argo data formats are based on NetCDF because e Itis a widely accepted data format by the user community e Itis a self describing format for which tools are widely available e Itis a reliable and efficient format for data exchange 1 2 Argo float data An Argo float drifts for a number of years in the ocean It continuously performs measurement cycles Each cycle lasts about 10 days and can be divided into 4 phases e A descent from surface to a defined pressure eg 1500 decibars e A subsurface drift eg 10 days e An ascending profile with measurements eg pressure temperature salinity e A surface drift with data transmission to a communication satellite Argo data management User s manual cc 8 A argo profiler cycle surface drift profile 10 hours of argos transmission tn descending profile 10 hours ascending profile 6 hours immersion drift profile 10 days argo data management rgo profiler cycling launch cyc
79. utgoing argo dac GDAC node CORIOLIS file date latitude longitude ocean profiler_type institution date update e file path and file name on the ftp site The file name contain the float number and the cycle number Fill value none this field is mandatory date date of the profile YYYYMMDDHHMISS Fill value blank latitude longitude location of the profile Fill value 99999 ocean code of the ocean of the profile as described in reference table 13 Fill value blank profiler_type type of profiling float as described in reference table 8 Fill value blank institution institution of the profiling float described in reference table 4 Fill value blank date update date of last update of the file YYYYMMDDHHMISS Fill value blank Each line describes a file of the gdac ftp site Profile directory format example Title Profile directory file of the Argo Global Data Assembly Center Description The directory file describes all profile files of the argo GDAC ftp site Project ARGO Format version 2 0 Date of update 20031028075500 FTP root number 1 ftp ftp ifremer fr ifremer argo dac FTP root number 2 ftp usgodae usgodae org pub outgoing argo dac GDAC node CORIOLIS file date latitude longitude ocean profiler_type institution date update aoml 13857 profiles R13857_001 nc 199707292003 0 267 16 032 A 0845 A0 20030214155117 aoml 13857 profile
80. y latitude_max latitude_min longitude_max longitude_min extreme locations of the float Fill values 99999 profiler_type type of profiling float as described in reference table 8 Fill value blank institution institution of the profiling float described in reference table 4 Fill value blank date update date of last update of the file YYYYMMDDHHMISS Fill value blank Trajectory directory format example Title Trajectory directory file of the Argo Global Data Assembly Center Description The directory file describes all trajectory files of the argo GDAC ftp site Project ARGO Format version 2 0 Date of update 20031028075500 FTP root number 1 ftp ftp ifremer fr ifremer argo dac FTP root number 2 ftp usgodae usgodae org pub outgoing argo dac GDAC node CORIOLIS file latitude_max latitude_min longitude_max longitude_min profiler_type institution date_update aoml 13857 13857_traj nc 1 25 0 267 16 032 18 5 0845 A0 20030214155117 aoml 13857 13857_traj nc 0 072 17 659 A 0845 A0 20030214155354 aoml 13857 13857_traj nc 0 543 19 622 A 0845 A0 20030214155619 jma 29051 29051 traj nc 32 280 30 280 143 238 140 238 846 A 20030212125117 jma 29051 29051 traj nc 32 352 30 057 143 206 140 115 846 A 20030212125117 Argo data management User s manual ET 2 6 3 Meta data directory format The metadata directory file describes all metadata files of the GDAC ftp site

Argo User's Manual Version 2.1

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