Product User Manual (PUM) for product H08 – SM-OBS-2 SM
Contents
1. For those users which are not so familiar with BUFR a FORTRAN program which converts the operational 1 km soil moisture product SM OBS 2 file into netCDF is attached here PROGRAM BUFR2NETCDF PURPOSE DECODE THE OPERATIONAL 1 KM SOIL MOISTURE PRODUCT IN BUFR FORMAT RE ENCODE IN netCDF FORMAT EXTERNALS BUFREX BUSEL2 BUSO123 PBBUFR PROPEN PBCLOSE COMPILATION f90 o bufr2netcdf bufr2netcdf F90 LSNETCDF_libdir Inetcdf LSHDF_libdir Ihdf5_hl Ihdf5 LSBUFR_libdir lbufr CALL bufr2netcdf lt BUFR file s name gt OUTPUT NetCDF file with extension i e everything after the last dot replaced by nc hO8_ 20090816 105100 metopa_14658 ZAMG buf becomes h08 20090816 105100 metopa_ 14658 ZAMG nc AUTHOR Alexander Jann ZAMG DATE 04 11 09 bug fix in 08 11 USE netcdf IMPLICIT NONE INTEGER 1 INDEX1D INDEX2D ERR SUBSET_NR JUMP JUMP_SM N NLAT NLON NR_PIXELS UNIT BUFR INTEGER PARAMETER JSUP 9 JSECO 3 JSEC1 40 JSEC2 4096 JSEC3 4 amp JSEC4 2 JELEM 160000 JBUFL 512000 KELEM 160000 KVALS 4096000 JBYTE 440000 INTEGER KSUP JSUP KSECO JSECO KSEC1 JSEC1 INTEGER KSEC2 JSEC2 KSEC3 JSEC3 KSEC4 JSEC4 INTEGER KBUFL KDLEN KEL KTDLEN KTDEXL INTEGER DIMENSION JBUFL KBUFF REAL 8 DIMENSION KVALS VALUES INTEGER DIMENSION JELEM KTDLST KTDEXP CHARACTER LEN 64 DIMENSION KELEM CNAMES CHARACTER LEN 24 DIMENSION KELEM CUNITS CHARACTER LEN 80 DIMENSION KELEM CV2. LST Status Instruments used in H SAF MetOp A 19 Oct 2006 expected gt 2012 817 km 09 30d Operational ASCAT 1 Mar 2002 09 May 2012 800 km 10 00 d ASAR Table 1 Current status of MetOp and Envisat satellites as of March 2010 Although ASCAT data are not directly used the processed SM OBS 1 product is used instead its main characteristics that are reflected in SM OBS 2 are recorded in the Table 02 The main features of ASAR that is used for building the database of disaggregation parameters are recorded in Table 03 Envisat was managed by ESA and ASAR data are available from the ESA archives The statistical parameters for the later downscaling process are derived from a multi annual image analysis of ASAR C band data several hundreds of images per pixel and stored in a parameter database which needs to be updated only rarely The SAR imagery used for generating the database is ENVISAT ASAR in ScanSAR Global Mode years 2004 2012 and planned for future imagery from the upcoming Sentinel 1 satellite Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 7 29 Product User Manual PUM 08 ASCAT Advanced Scatterometer Satellites MetOp A MetOp B MetOp C Status Operational Utilised in the period 2006 to 2021 Mission Sea surface wind vector Also large scale soil moisture Instrument type Radar scatterometer C band 5 255 GHz side looking both left and
3. 26 cscisnesonciveccnvessnndevestabewwaeveceseiasueuncssoievasiadceselawaaendi Weansonnedavestesens 5 1 2 1 Pan DEO en E e nna asa caie on eatsemseanec ou ansieansianoe aan cevenneceegeunenseaneesvennenees 5 1 2 2 Status of satellites and instruments ss sessesssserssrrrresrrressrrresrreresrrressrrrsserressreresrrresereresrrressre 6 1 2 3 PINE al ites of thealeorit ONieessna seu nenseanendsaiesers 7 1 2 4 Architecture of the products generation chain ccecccccssseccceesececcesecceeescceseesecessueceesegeeeeeas 8 1 2 5 Product COVERS and aD Deal AIC Ces wactivanssdasacovesiuansunnseasawssecaceunassersussiancoyeneesasatuucsenuneasaveisenens 9 2 Product operational characteristics sicccccdssncssniordivecssesdevatswoesaddonwauwsaesvisuaresvannadsenshet daeunmbeesssauscuawnnssamacbors 11 2 1 Horizontal resolution and sampling ssessessssensesserssrressrrrresrrrrssrrressrersserressreresrrreserereserressreessreresene 11 2 1 1 Vertical resolution if applicable eesssseseeseseensssreresrrnsssrrresrrrsssreresrrrsssrereserrsssreresererssrereseeresene 11 2 1 2 Observing cycle and time sampling ccccccesseccccessccccesececeeececeeusecessenececeeeceeseusecessenecetseees 11 Zs WUC NS a a E T etueniaget ssnie cece vit oecasswescateenscsadaseeseaueeteasentoonsaaees 11 2 1 4 PV VSO MS WAS CON e suanetcosenseenseamocedouinaseeniauueacas 12 3 Produc Vall CAG ION cctv sscesn tetas E S S S 12 Ml Validation Strategy sacrer E E 12 32 STN Or
4. CALL CHECK NF90_DEF_VAR_DEFLATE NCID SOMO_FLAG6_VARID 1 1 9 End define mode CALL CHECK NF90_ENDDEF NCID 5 Write the netCDF file clean up and leave Write the coordinate variable data This will put the latitudes and longitudes of our data grid into the netCDF file CALL CHECK NF90_PUT_VAR NCID LAT_VARID PHI CALL CHECK NF90_PUT_VAR NCID LON VARID LAMBDA 1 NLON Write the soil moisture data to the netCDF file CALL CHECK NF90_PUT_VAR NCID SOMO_VARID TRANSPOSE RESHAPE SOMO 1 INDEX2D 1 NLAT NLON CALL CHECK NF90_PUT_VAR NCID SOMO_ERR_VARID TRANSPOSE RESHAPE SOMO_ERR 1 INDEX2D 1 NLAT NLON CALL CHECK NF90_PUT_VAR NCID SOMO_FLAGS_VARID TRANSPOSE RESHAPE FLAG_40005 1 INDEX2D 1 NLAT NLON CALL CHECK NF90_PUT_VAR NCID SOMO_FLAG6_VARID TRANSPOSE RESHAPE FLAG_40006 1 INDEX2D 1 NLAT NLON Close the file CALL CHECK NF90_CLOSE NCID DEALLOCATE SOMO_ ERR DEALLOCATE SOMO DEALLOCATE FLAG_40005 DEALLOCATE FLAG_40006 DEALLOCATE LAMBDA DEALLOCATE PHI WRITE SUCCESS in writing OFILNAM CONTAINS SUBROUTINE CHECK STATUS INTEGER INTENT IN STATUS IF STATUS NF90_NOERR THEN WRITE NF9O_STRERROR STATUS STOP 2 END IF END SUBROUTINE CHECK END PROGRAM Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 Stee Aptcatn EH H SAF Issue Revision Index 1 4 ae ree Product HO8 SM OBS 2 Date 02 03 2015 Page
5. IF KEL gt KELEM KEL KELEM Expand BUFR message CALL BUFREX KBUFL KBUFF KSUP KSECO KSEC1 KSEC2 KSEC3 KSEC4 amp KEL CNAMES CUNITS KVALS VALUES CVALS ERR NLON NINT VALUES 4 VALUES 3 0 00416667 maximum of columns may actually be less NLAT NINT VALUES 6 VALUES 5 0 00416667 NR_PIXELS NLON NLAT ALLOCATE SOMO 1 NR_PIXELS ALLOCATE SOMO_ ERR 1 NR_PIXELS ALLOCATE FLAG_40005 1 NR_PIXELS ALLOCATE FLAG_40006 1 NR_PIXELS ALLOCATE LAMBDA 1 NLON ALLOCATE PHI 1 NLAT 3 Decode actual soil moisture data INDEX1D 1 INDEX2D 1 MSSLOOP DO KBUFL 0 CALL PBBUFR UNIT KBUFF JBYTE 4 KBUEL ERR IF ERR 1 THEN CALL PBCLOSE UNIT ERR EXIT MSSLOOP ENDIF IF ERR 2 STOP FILE HANDLING PROBLEM IF ERR 3 STOP ARRAY TOO SMALL FOR PRODUCT N N 1 KBUFL KBUFL 4 1 CALL BUSO123 KBUFL KBUFF KSUP KSECO KSEC1 KSEC2 KSEC3 ERR IF ERR 0 THEN PRINT ERROR IN BUSO123 ERR FOR MESSAGE NUMBER N ERR 0 Dees Product User Manual PUM 08 HSAF ray on Product HO8 SM OBS 2 Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Date 02 03 2015 CYCLE MSSLOOP ENDIF KEL KVALS KSEC3 3 IF KEL gt KELEM KEL KELEM Expand BUFR message CALL BUFREX KBUFL KBUFF KSUP KSECO KSEC1 KSEC2 KSEC3 KSEC4 amp KEL CNAMES CUNITS KVALS VALUES CVALS ERR IF ERR 0 CALL EXIT 2 ISSLOOP DO SUBSET_NR 0 KSUP 6 1 JUMP SUBSET_NR KEL CALL BUSEL2 SUBSET_NR 1 KEL KTDLE
6. RMSE m m The results reported in Table 08 are split by countries and campaigns separately for field measurements and comparison with the output of hydrological models The following Statistical scores are reported for more information see PVR 08 e ME Mean Error e SD Standard Deviation e RMSE Root Mean Square Error e CC Correlation coefficient Region Period N of sites ae CC m m M t o France 01 2007 0 86 max France South West 12 2008 TU Wien amp Luxembourg 01 2007 France 01 2007 Tunisia 01 2009 In situ measurements TU Wien amp Luxembourg 3b 01 2007 9 Sfc 0 18 Sfc 0 29 Sfc 0 58 CNR IRPI Bibeschbach 12 2008 Root 0 18 Root 0 14 Root 0 84 TU Wien amp Italy 3b 01 2007 1 Sfc 0 03 Sfc 0 30 Sfc 0 46 CNR IRPI Tiber 12 2008 Root 0 04 Root 0 15 Root 0 85 Belgium 01 2007 709 Belgium 01 2007 685 m out waos eame 22 f o 029 07 TU Wien amp Italy 39 01 2007 1 Sfc 0 12 Sfc 0 22 Sfc 0 74 CNR IRPI Tiber 12 2008 Root 0 12 Root 0 14 Root 0 84 Table 5 Statistical scores for SM OBS 2 Hydro Model Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 14 29 4 Product availability 4 1 Terms of Use All H SAF products are owned by EUMETSAT and the EUMETSAT SAF Data Policy applies All intellectual property rights of the H SAF products belong to EUMETSAT The use of these products
7. TE S a E E E 13 A Producti avala ONY eonan e E E 14 4 1 TET Or U Can E E A 14 4 2 Generar NU O epn E E E A ccesnees 14 4 3 Forma UC COE a EAEE EAEE E AE E AEE EE 14 4 4 Bec DUONOr UMS TES a A bend ivonau acu seasunaieesaebteeastocsteenebhes 14 Annex 1 SM OBS 2 Output description xccesectecsccaduniinsainnisdnnddscasionendbesnathedbaesed aces sanseesinsenddaneaaiuddseawbaiesnnndicasessabes 16 Annex 2 BUFR decoding example tnase se cdisewacenectacasicatsnss eA AE EE E nucibeaetenanies 21 Annex Introduction LO FI S SAP esis sacaddasiccerccsios karea A ENAT EN 25 The EUMETSAT Satellite Application Facilities ccccccescccccsseccceessccecsesececeeeceeeeesecessuececseneceeseesecesseneees 25 PUDO CO E A er E EA E A 26 Products Deliveries of the H SAF cccceccccssssccccseccccessceccesececcusececeessceceeecseseeseseceuseseceesseeeeeesensusesenes 27 System OV EV OW reseter enen E hovconbemaenannes senneaciessen E O a A 27 ANNEX A ATON e E gas sennpseneataptssoneneeeacanaesaaaoessencses 28 Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 4 29 List of Tables Table 1 Current status of MetOp and Envisat satellites as of March 2010 ou eeecccceeecesseeeeseseeeeeseeeeeeeeas 6 Table 2 Main features of to blr ne nO n Co on ne er SSE sPesE osuo se sesen 7 Table 3 Main features of ASAR nssessssesssesssesssserrsenssssreseooseossssosseosses
8. Weather Forecasts EUMETSAT Data Centre previously known as U MARF Short for EUMETSAT EUMETSAT s Broadcast System for Environmental Data European Organisation for the Exploitation of Meteorological Satellites Finnish Meteorological Institute File Transfer Protocol Geostationary Earth Orbit SAF on GRAS Meteorology Hierarchical Data Format High Resolution Visible one SEVIRI channel SAF on Support to Operational Hydrology and Water Management Interactive Data Language Instantaneous Field Of View Institute of Meteorology and Water Management in Poland Institut fur Photogrammetrie und Fernerkundung of TU Wien in Austria International Precipitation Working Group Infra Red Institut Royal M t orologique of Belgium alternative of RMI Istituto di Scienze dell Atmosfera e del Clima of CNR Italy istanbul Technical University in Turkey Laboratoire Atmospheres Milieux Observations Spatiales of CNRS in France Low Earth Orbit SAF on Land Surface Analysis Local Satellite Time if referred to time or Land Surface Temperature if referred to temperature National Meteorological Service of France Middle East Technical University in Turkey Microwave Humidity Sounder on NOAA 18 and 19 and on MetOp Meteosat Second Generation Meteosat 8 9 10 11 Meteosat Visible and Infra Red Imager on Meteosat up to 7 Micro Wave Net Radiation National Environmental Satellite Data and Information Services National Met
9. against floods landslides avalanches and evaluating water resources the activity includes e downscaling upscaling modelling from observed predicted fields to basin level e fusion of satellite derived measurements with data from radar and raingauge networks e assimilation of satellite derived products in hydrological models e assessment of the impact of the new satellite derived products on hydrological applications Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 27 29 Products Deliveries of the H SAF For the full list of the Operational products delivered by H SAF and for details on their characteristics please see H SAF website hsaf meteoam it All products are available via EUMETSAT data delivery service EUMETCast http www eumetsat int website home Data DataDelivery EUMETCast index html or via ftp download they are also published in the H SAF website hsaf meteoam it All intellectual property rights of the H SAF products belong to EUMETSAT The use of these products is granted to every interested user free of charge If you wish to use these products EUMETSAT s copyright credit must be shown by displaying the words copyright year EUMETSAT on each of the products used System Overview H SAF is lead by the Italian Air Force Meteorological Service ITAF USAM and carried on by a consortium of 21 members from 11 countri
10. and others the evaluation of accuracy requires validation i e comparison with the ground truth or with something assumed as true Calibration and validation of soil moisture observation from space is a hard work especially because ground systems are essentially based on very sparse in field measurements Comparison with results of numerical models obviously suffer of the limited skill of NWP in predicting soil moisture a very downstream product that passes through quantitative precipitation forecast that certainly is not the most accurate product of NWP A mixture of several techniques is generally used and the results change with the climatic situation and the status of soil Detailed report of the product validation activity for product SM OBS 2 is provided as document e PVR 08 Product Validation Report for SM OBS 2 In this PUM 08 only summary results are provided mainly aiming at characterising the product quality under different geographical climatological conditions those in the countries of the participating validation Units and different seasons Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 13 29 Product User Manual PUM 08 3 2 Summary of results Prototypes of SM OBS 2 have been available since May 2009 and since then the product has been distributed and submitted for validation User requirements for soil moisture observation have been stated in terms of
11. eee 10 Figure 6 compares the 1 km sampled SM OBS 2 with the 25 km original resolution of SM OBS 1 10 Figure 7 Example file hO8 20121206 204800 metopa_ 31826 ZAMG buf used for decoding 21 Figure 8 Schematic organisation Of the product ccccccsscccccsseccccessececeesececeusececeeeecceseusecessuaecesseeceetenseeeeas 21 Figure 9 Conceptual scheme of the EUMETSAT Application Ground Segment sssccccesseceeeeseeeeeeeseeeees 25 Figure 10 Current composition of the EUMETSAT SAF Network cccsssssecccccsssecceccseesececeseeeseceesseenseeeeeeas 26 Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 5 29 1 Introduction 1 1 Purpose of the document Product User Manuals are available for each pre operational H SAF product for open users and also for demonstrational products as necessary for beta users Each PUM contains e Product introduction principle of sensing Satellites utilized Instrument s description Highlights of the algorithm Architecture of the products generation chain Product coverage and appearance e Main product operational characteristics Horizontal resolution and sampling Observing cycle and time sampling Timeliness e Overview of the product validation activity Validation strategy Global statistics Product characterisation e Basic information on product availa
12. right 3 antennas on each side Scanning technique Two 550 km swaths separated by a 700 km gap along track 3 looks each pixel 45 90 and 135 azimuth Coverage cycle Global coverage in 1 5 days Best quality 50 km standard quality 25 km basic sampling 12 5 km Mass 260 kg Power 215 W Data rate 42 kbps Table 2 Main features of ASCAT Satelite Envisat OOS Status Terminated Ullised in the period 2002 to 09 May 2012 O Mission Hghsesouon al weahermultsupese mager for ocean erdand e i Global coverage in 5 ay for the global monitoring mode if used for 70 of the time in longer periods Coverage cycle for other operation modes up to 3 months 30 m to 1 km depending on operation mode See table Mass 832 kg Power 1400 W Data rate 100 Mbps Operation mode Resolution Swath Field of regard Polarisation Stripmap 30m f 100km 485km HHorwv Table 3 Main features of ASAR 1 2 3 Highlights of the algorithm The baseline algorithm for SM OBS 2 processing is described in ATDD 08 Only essential elements are highlighted here Fig 08 illustrates the flow chart of the SM OBS 2 processing chain There is an off line activity to prepare the disaggregation parameters and a real time activity to exploit the satellite data for the product In the off line pre processing step Envisat ASAR Global Mode ASAR GM datasets are re sampled to the geometry of the output product over a predef
13. successive product values assuming that they carry forward reasonably independent information The horizontal resolution descends from the instrument Instantaneous Field of View FOV sampling distance pixel Modulation Transfer Function MTF and number of pixels to co process for filtering out disturbing factors e g clouds or improving accuracy It may be appropriate to specify both the resolution Ax associated to independent information and the sampling distance useful to minimise aliasing problems when data have to undertake resampling e g for co registration with other data In the case of SM OBS 2 the effective resolution is controlled by the originating product SM OBS 1 and the disaggregation parameters The effectiveness of disaggregation depends on the availability and the effectiveness of the disaggregation parameters available at 500 m sampling 1 km resolution The SM OBS 2 resolution is therefore Ax 1 the sampling distance is 500 m 2 1 1 Vertical resolution if applicable The vertical resolution Az also is defined by referring to the vertical sampling distance between two successive product values assuming that they carry forward reasonably independent information The vertical resolution descends from the exploited remote sensing principle and the instrument number of channels or spectral resolution It is difficult to be estimated a priori it is generally evaluated a posteriori by means of the validation acti
14. the actual start of data The next messages now constitute the actual data stream The data are listed column wise from west to east organised in 120 element groups 120 is fixed for all BUFR files The descriptor EXTENDED DELAYED DESCRIPTOR tells you that the next descriptors SURFACE SOIL MOISTURE tO SOIL MOISTURE PROCESSING FLAC are always repeated in a group of 4 quadruple The value 3480 this number is variable tells you that the repetition is done 3480 times Coordinates are given now in high accuracy The next 3480 quadruples are related to the first image column at 8 49792W which starts at 34 0021N and ends at 48 4979N Subset 2 Doc No SAF HSAF PUM 08 Satelite Appicotion Issue Revision Index 1 4 the EUMETSAT Product User Manual PUM 08 Product H08 SM OBS 2 Date 02 03 2015 Page 23 29 Management lists the next 3480 quadruples for the next column at 8 49375W and so forth In the end you filled a matrix with 120 33 3960 elements x direction times 3480 elements y direction with a total of 13 780 800 records Section 0 Length of Section 0 8 byte s Total length of BUFR message 252394 byte s BUFR edition number 4 Section 1 Length of Section 1 22 byte s Originating subcentre 0 Originating centre 0 Update sequence number 1 Flag Presence of section 2 0 Local table version number 0 Data category 0 Data subcategory 0 Local data sub category 0 Year 2012 Month 12 Day 6 Hour 20 Minute
15. 08 SM OBS 2 Date 02 03 2015 Page 26 29 H SAF NWC SAF Support to Operational Hydrology and Water Management Led by Italian Meteorological Institute Support to Nowcasting and Very Short Range Forecasting Led by Agencia Estatal de Meteorologia Spain JR a e ROM SAF osi SAF Radio Occultation Meteorology Ocean and Sea Ice Led by Danish Meteorological Institute Led by M t o France EUMETSAT NETWORK OF SATELLITE APPLICATION FACILITIES cMSAF Climate Monitoring Led by Deutscher Wetterdienst Germany 03M SAF Ozone and Atmospheric Chemistry Monitoring Led by Finnish Meteorlogical Institute NWP SAF Numerical Weather Prediction Led by Met Office UK LSASAF Land Surface Analysis Led by Portuguese Meteorological Institute Figure 10 Current composition of the EUMETSAT SAF Network Purpose of the H SAF The main objectives of H SAF are a to provide new satellite derived products from existing and future satellites with sufficient time and space resolution to satisfy the needs of operational hydrology by generating centralizing archiving and disseminating the identified products e precipitation liquid solid rate accumulated e soil moisture at large scale at local scale at surface in the roots region e snow parameters detection cover melting conditions water equivalent b to perform independent validation of the usefulness of the products for fighting
16. 21 29 Annex 2 BUFR decoding example HSAF 1km soil moisture ascat_20121206_204800 25201510 5 0 5 1015202530354045 75 ee eres 75 100 90 e s ee ey re TETN N PAR 33 eas cals Sean et Pars ee la PR rwa 80 70 60 50 40 30 25 20 15 10 5 o 5 10 15 20 25 30 35 40 45 Figure 7 Example file h08_ 20121206 _204800_metopa_31826_ZAMG buf used for decoding 1 Schematic data organisation Message 1 prologue Subsets 1 120 A 48 5N sets Wessace Sa eT S me wo fo nim oO iO nin nin o ews EXTENDED DELAYED DESCRIPTOR 3480 descriptor 34 0N 14 05 Figure 8 Schematic organisation of the product The data coverage is marked with the red box in the map figure above The colours of the schematic correspond to the colours in the following text for our example file This BUFR file contains 34 messages starting 34 times with the four letters BUFR The number of messages is variable Message 1 is always the prologue like a header information while the following messages in our case 2 33 contain the actual data Each message is subdivided into Sections 2 Message 1 the prologue Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product H08 SM OBS 2 Date 02 03 2015 Page 22 29 The prologue tells you the coarse accuracy coordinates of the image coverage 9 5W to 14E a
17. 48 Second 0 BUFR master table 0 BUFR master table version number 13 Section 3 Length of Section 3 26 byte s Reserved O Number of data subsets 120 Data type data compression 64 Data descriptors unexpanded 1 006001 2 005001 3 005001 4 104000 5 031002 6 040001 7 040002 8 040005 9 040006 Subset 1 1 LONGITUDE HIGH ACCURACY 0 84979200000000E 001 DEGREE 2 LATITUDE HIGH ACCURACY 0 34002080000000E 002 DEGREE 3 LATITUDE HIGH ACCURACY 0 48497920000000E 002 DEGREE 4 EXTENDED DELAYED DESCRIPTOR REPL 0 34800000000000E 004 NUMERIC 5 SURFACE SOIL MOISTURE MS MISSING 6 ESTIMATED ERROR IN SURFACE SOIL MISSING 7 SOIL MOISTURE CORRECTION FLAG 0 00000000000000E 000 FLAG TABLE 40005 8 SOIL MOISTURE PROCESSING FLAG MISSING FLAG TABLE 40006 the 4 descriptors are repeated 4 3480 13 920 lines in here 13921 SURFACE SOIL MOISTURE MS MISSING 13922 ESTIMATED ERROR IN SURFACE SOIL MISSING Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 Satelite Appccton H SAF Issue Revision Index 1 4 Support to Ope ryaobogy ond Water Product HO8 SM OBS 2 Date 02 03 2015 l Page 24 29 13923 SOIL MOISTURE CORRECTION FLAG 0 00000000000000E 000 FLAG TABLE 40005 13924 SOIL MOISTURE PROCESSING FLAG MISSING FLAG TABLE 40006 Subset 120 4 Message 3 33 the rest of the data Similar to previous section Doc No SAF HSAF PUM 08 the EUMETSAT Product User Ma
18. ALS IDs for the netCDF file dimensions and variables INTEGER NCID LON_DIMID LAT_DIMID DIMIDS 2 INTEGER LAT_VARID LON_VARID INTEGER SOMO_VARID SOMO_ERR_VARID SOMO_FLAGS_VARID SOMO_FLAG6_VARID ranges REAL SOMO_RANGE 2 0 100 INTEGER 2 FLAG_RANGE 2 0 255 names CHARACTER LEN PARAMETER LAT_NAME latitude LON_NAME longitude CHARACTER LEN PARAMETER UNITS units SOMO_UNITS Doc No SAF HSAF PUM 08 The EUMETSAT Product User Manual PUM 08 ication H SAF Issue Revision Index 1 4 y sr Product H08 SM OBS 2 Date 02 03 2015 Page 18 29 CHARACTER LEN PARAMETER LAT_UNITS degrees_north LON_UNITS degrees_east SM data REAL DIMENSION ALLOCATABLE SOMO SOMO_ERR LAMBDA PHI INTEGER 2 DIMENSION ALLOCATABLE FLAG_40005 FLAG_40006 CHARACTER LEN 255 IFILNAM OFILNAM DATA KSECO KSEC2 KSEC3 KSEC4 KTDLST amp JSECO 0 JSEC2 0 JSEC3 0 JSEC4 0 JELEM 0 1 Open BUFR file CALL GETARG 1 IFILNAM ERR 0 CALL PBOPEN UNIT IFILNAM R ERR IF ERR 1 STOP OPEN FAILED IF ERR 2 STOP INVALID FILE NAME IF ERR 3 STOP INVALID OPEN MODE SPECIFIED 2 Decode prologue ERR 0 CALL PBBUFR UNIT KBUFF JBYTE 4 KBUFL ERR IF ERR 0 STOP cannot even read the prologue KBUFL KBUFL 4 1 CALL BUSO123 KBUFL KBUFF KSUP KSECO KSEC1 KSEC2 KSEC3 ERR KEL KVALS KSEC3 3
19. Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 1 29 Product User Manual PUM 08 EUMETSAT Satellite Application Facility on Support to Operational Hydrology and Water Management The EUMETSAT Network of Satellite Application Facilities H SAF Support to Operational Hydrology and Water Management Product User Manual PUM for product H08 SM OBS 2 SM OBS 2 Small scale surface soil moisture by radar scatterometer Reference Number SAF HSAF PUM 08 Issue Revision Index 1 4 Last Change 02 Mar 2015 Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 a A sotele appicoron H SAF Issue Revision Index 1 4 ana Product HO8 SM OBS 2 Date 02 03 2015 l Page 2 29 DOCUMENT CHANGE RECORD 20 01 2012 Baseline version prepared for ORR1 Part 3 05 07 2012 Updated version 09 02 2015 Updated chapter Versioning history 02 03 2015 Section 4 Product Availability and Annex 3 Introduction to H SAF updated Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 3 29 INDEX 1 ATT oae a eee er EA E EAEE A E sero ges aes aterm ae cn yeti ec een eee ees 5 1 1 Pupo e OT CISCO USING ea ieccrccteecosenacn acs cut ccausanecc vanes cuenaceeaucienaausassecavenencruenses sector easanuecerenencet 5 1 2 introduction to product SIVIAO BS
20. IR Teknillinen korkeakoulu Helsinki University of Technology TRMM Microwave Imager on TRMM Tropical Rainfall Measuring Mission UKMO Turkish State Meteorological Service Technische Universitat Wien in Austria Unified Meteorological Archive and Retrieval Facility University of Ferrara in Italy User Requirements Document Universal Coordinated Time Visible Zentralanstalt fur Meteorologie und Geodynamik of Austria
21. N KTDLST KTDEXL KTDEXP CNAMES amp CUNITS ERR LAMBDA INDEX1D VALUES JUMP 1 IF INDEX1D 1 THEN DO 1 NLAT PHI 1 VALUES JUMP 2 0 00416667 I 1 END DO ENDIF INDEX1D INDEX1D 1 Resolve replication JUMP_SM JUMP 5 DO I 1 VALUES JUMP 4 SOMO INDEX2D VALUES JUMP_SM SOMO_ERR INDEX2D VALUES JUMP_SM 1 FLAG _40005 INDEX2D VALUES JUMP_SM 2 IF VALUES JUMP_SM 3 gt 65535 THEN FLAG 40006 INDEX2D 255 ELSE FLAG 40006 INDEX2D VALUES JUMP_SM 3 ENDIF JUMP_SM JUMP_SM 4 INDEX2D INDEX2D 1 END DO END DO ISSLOOP END DO MSSLOOP 4 Create the netCDF file and variables OFILNAM IFILNAM 1 SCAN IFILNAM TRUE ne CALL CHECK NF90_CREATE OFILNAM NF90_HDF5 NCID Define the dimensions NLON INDEX1D 1 CALL CHECK NF90_DEF_DIM NCID LAT_NAME NLAT LAT_DIMID CALL CHECK NF90_DEF_DIM NCID LON _ NAME NLON LON_DIMID Define the coordinate variables They will hold the coordinate information that is the latitudes and longitudes A varid is returned for each CALL CHECK NF90_DEF_VAR NCID LAT_NAME NF90_ FLOAT LAT_DIMID LAT_VARID CALL CHECK NF90_DEF_VAR NCID LON_ NAME NF90_FLOAT LON_DIMID LON_VARID Assign units attributes to coordinate var data This attaches a text attribute to each of the coordinate variables containing the units CALL CHECK NF90_PUT_ATT NCID LAT_VARID UNITS LAT_UNITS CALL CHECK NF90_PUT_ATT NCID LON VARID UNITS LON_ UNITS The dimids ar
22. ber Table 6 Summary instructions for accessing SM OBS 2 data Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 16 29 Annex 1 SM OBS 2 Output description The Soil moisture products are delivered in BUFR Binary Universal Form for data Representation format which is a continuous bit stream made of sequence of octets encoded according to the current WMO tables A BUFR toolbox and a manual for the user can be found at the ECMWF homepage A useful guide is given at the WMO pages at http www wmo int pages prog www WDM Guides Guide binary 1A html The BUFR template valid at the time of this writing 1s 006001 LONGITUDE HIGH ACCURACY 005001 LATITUDE HIGH ACCURACY 005001 LATITUDE HIGH ACCURACY 103000 delayed replication of 4 BUFR descriptors 031002 EXTENDED DELAYED DESCRIPTOR REPLICATION FACTOR 040001 SURFACE SOIL MOISTURE MS 040002 ESTIMATED ERROR IN SURFACE SOIL MOISTURE 040005 SOIL MOISTURE CORRECTION FLAG 040006 SOIL MOISTURE PROCESSING FLAG m O CON DU BW WN Each of these telegrams represents an image column Taking into account the results of the preceding 120 of these telegrams are packed together in a BUFR multi subset Following tables show the possible values for flags 40005 and 40006 according to WMO definitions Yet only values highlighted in red are at present relevant for the 1km surface soil moisture pr
23. bility Access modes Description of the code Description of the file structure An annex also provides common information on Objectives and products Evolution of H SAF products User service and Guide to the Products User Manual Although reasonably self standing the PUMs rely on other documents for further details Specifically e ATDD Algorithms Theoretical Definition Document for extensive details on the algorithms only highlighted here e PVR Product Validation Report for full recount of the validation activity both the evolution and the latest results These documents are structured as this PUM i e one document for each product They can be retrieved from the CNMCA site on HSAF web page at User Documents session 1 2 Introduction to product SM OBS 2 1 2 1 Principle of sensing Product SM OBS 2 Small scale surface soil moisture by radar scatterometer results from post processing of the SM OBS 1 product extracted by ZAMG from the Global surface soil moisture product distributed by EUMETSAT Product SM OBS 1 is based on the radar scatterometer ASCAT embarked on MetOp satellites The instrument scans the scene in a push broom mode by six side looking antennas three left hand three right hand see Fig 06 On each side the three antennas looking aside 45 and 45 respectively provide three views of each earth location under different viewing angles measuring three backscattering coefficients o0 sigma nought at s
24. chitecture of the SM OBS 2 production chain 1 2 5 Product coverage and appearance Fig 10 shows an example of downscaled surface soil moisture at 1 km resolution for Europe representing a 3 minute strip of a full ASCAT orbit The two sub swaths can be clearly identified no data values e g over the sea are masked out 100 90 tS p 60 50 40 30 20 10 Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 Network of Sree Apc a H SAF Issue Revision Index 1 4 iyaooay ond Water Product HO8 SM OBS 2 Date 02 03 2015 Page 10 29 Figure 5 Example of small scale surface soil moisture SM OBS 2 from ASCAT Note the two side swaths 550 km each and the 670 km gap in between MetOp A 30 September 2009 20 12 UTC ascot 200 0605_1 S1_metap0 _042754_svl_125_200 70605191808_000 70603192106 16 35 50 ia 84 106 Figure 6 compares the 1 km sampled SM OBS 2 with the 25 km original resolution of SM OBS 1 Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product User Manual PUM 08 Product HO8 SM OBS 2 Date 02 03 2015 Page 11 29 2 Product operational characteristics 2 1 Horizontal resolution and sampling The horizontal resolution Ax is the convolution of several features sampling distance degree of independence of the information relative to nearby samples To simplify matters it is generally agreed to refer to the sampling distance between two
25. eorological Administration of Romania National Oceanic and Atmospheric Administration Agency and satellite SAF in support to Nowcasting amp Very Short Range Forecasting Numerical Weather Prediction SAF on Numerical Weather Prediction SAF on Ozone and Atmospheric Chemistry Monitoring Hungarian Meteorological Service Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 The EUMETSAT ORR OSI SAF PDF PEHRPP Pixel PMW PP PR PUM PVR RMI RR RU SAF SEVIRI SHMU SSM I SSMIS SYKE Teg TKK TMI TRMM TSMS TU Wien U MARF UniFe URD UTC VIS ZAMG Doc No SAF HSAF PU M 08 Issue Revision Index 1 4 Date 02 03 2015 Page 29 29 Product User Manual PUM 08 Product H08 SM OBS 2 Operations Readiness Review SAF on Ocean and Sea Ice Probability Density Function Pilot Evaluation of High Resolution Precipitation Products Picture element Passive Micro Wave Project Plan Precipitation Radar on TRMM Product User Manual Product Validation Report Royal Meteorological Institute of Belgium alternative of IRM Rain Rate Rapid Update Satellite Application Facility Spinning Enhanced Visible and Infra Red Imager on Meteosat from 8 onwards Slovak Hydro Meteorological Institute Special Sensor Microwave Imager on DMSP up to F 15 Special Sensor Microwave Imager Sounder on DMSP starting with S 16 Suomen ymp rist keskus Finnish Environment Institute Equivalent Blackbody Temperature used for
26. erate the product and the reference dissemination means In the case of H SAF the future dissemination tool is EUMETCast but currently we refer to the availability on the FTP site Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 12 29 Product User Manual PUM 08 The product is generated shortly after reception of the Global product from EUMETSAT via EUMETCast that has a timeliness of 1 5 h The processing time is less than 20 minutes Adding 10 min for distribution we have 2h 2 1 4 Versioning history The following table gives an overview about the operational product versions Updates gap filling only over BeNeLux countries and Italy Northern part 1 04 20110518 of Belgium Demer river catchment extended but with reduced quality see note below 20120412 Ethiopia and Kenya included as first African region 1 06 90120701 Update over Italy No updates over BeNeLux because only very few more new files were acquired 1 07 Optimized processing chain better results of interpolation in case of few 20130704 i l current valid measurements now running on a virtual machine Table 4 Operational Product Versions 3 Product validation 3 1 Validation strategy Whereas the previous operational characteristics have been evaluated on the base of system considerations number of satellites their orbits access to the satellite and instrument features IFOV swath MTF
27. es see website hsaf meteoam it for details Two major areas can be distinguished within the H SAF system context e Product generation area e Central Services area for data archiving dissemination catalogue and any other centralized services e Validation services area which includes Quality Monitoring Assessment and Hydrological Impact Validation Products generation area is composed of 5 processing centres physically deployed in 5 different countries these are e for precipitation products ITAF CNMCA Italy e for soil moisture products ZAMG Austria ECMWF UK e for snow products TSMS Turkey FMI Finland Central area provides systems for archiving and dissemination located at ITAF CNMCA Italy it is interfaced with the production area through a front end in charge of product collecting A central archive is aimed to the maintenance of the H SAF products it is also located at ITAF CNMICA Validation services provided by H SAF consists of e Hydrovalidation of the products using models hydrological impact assessment e Product validation Quality Assessment and Monitoring Both services are based on country specific activities such as impact studies for hydrological study or product validation and value assessment Hydrovalidation service is coordinated by IMWM Poland whilst Quality Assessment and Monitoring service is coordinated by DPC Italy The Services activities are performed by experts from the
28. ined European grid All the parameters are stored in a European parameter database When it comes to product generation itself with the software WARP H the disaggregated product is calculated with the restored European parameter database in near real time The idea of the disaggregation approach is to use a temporal stability concept This concept has been established originally in hydrology but has been used in different applications as well Introduced by Vauchaud et al 1985 it is used to estimate representative soil moisture stations within a catchment area With this method the relation between a single local in situ soil moisture station and the regional mean of t Vauchaud G A Passerat de Silans P Balabanis and M Vauclin 1985 Temporal stability of spatially measured soil water probability density function Soil Science Society of America 49 822 828 Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 8 29 Product User Manual PUM 08 all in situ soil moisture stations can be described Since then the method has for example been used by Martinez Fernandez and Ceballos 2005 to describe the relation between local in situ soil moisture data and regional soil moisture trends If the spatial coverage of ASAR GM data is not sufficient for regions in Europe the product SM OBS 2 is not defined there currently the case for UK parts of the Benelux countries Sicily and Corsica
29. is granted to every interested user free of charge If you wish to use these products EUMETSAT s copyright credit must be shown by displaying the words copyright year EUMETSAT on each of the products used 4 2 General Information To access the H SAF products the user must register at the H SAF Official Web Portal http hsaf meteoam it from which it is possible to access to the H SAF Product Download Centre which allows users to access data as described here following 1 Access to data produced in the last 60 days must be made by the Official H SAF FTP server ftp ftphsaf meteoam it to obtain user and password please submit registration form on H SAF Official Web Portal or contact the help desk at us hsaf meteoam it and via EUMETCAST a multi service dissemination system based on standard Digital Video Broadcast DVB technology for more information http www eumetsat int 2 The access to the archived data must be performed through an order process There are two ways to place an order a the first link is a basic function provided directly from the H SAF Web Portal It provides all basic functions to carry out orders by selecting one or more products and setting for each selected product an expected time range b The second function https eoportal eumetsat int allows access to EUMETSAT Data Centre A registration to EUMETSAT portal is required The EUMETSAT Data Center offers advanced functions of management and contro
30. l of orders among which the possibility to make geographical selection of products to make the cloning of orders and to monitor the status of the orders In Both cases the orders placed will be submitted for approval and will be delivered within three working days Finally quick looks of the latest 20 maps can be viewed as PNG images or as an animated slideshow on the H SAF Web Portal 4 3 Formats and codes SM OBS 2 is coded as e the digital data BUFR e the image like maps PNG In the directory utilities the folder Bufr_decode provides the instructions for reading the digital data In addition the output description of SM OBS 2 is provided in the Appendix 4 4 Description of the files The data are available under e Directory products e Sub directory h08 e Two folders h0O8 cur_mon_buf h08 cur_mon_png Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 15 29 the EUMETSAT Product User Manual PUM 08 rk t Netwo Sotellite Applica ac of Table 09 summarises the situation and provides the information on the file structure Product identifier h08 Folders under h08 Files description of current month hO8_yyyymmdd_hhmmss_satellite_nnnnn_ZAMG png vyyymmdd year month day hhmmss hour minute second of first scan line ascending southernmost descending northernmost satellite name of the satellite currently metopa nnnnn orbit num
31. lightly different time Each antenna triplet provides a side swath of 550 km The two swaths leave a gap close to the sub satellite track of 670 km Global coverage over Europe is achieved in 1 5 days The basic instrument sampling distance is 12 5 km The primary ASCAT observation sea surface wind is processed at 50 km resolution For soil moisture processing is performed at 50 km operational and 25 km research resolution with a sampling distance of 25 km and 12 5 km respectively For the purpose of SM OBS 2 the 25 km resolution 12 5 km sampling distance SM OBS 1 product is disaggregated and re sampled at 1 km intervals to better fit hydrological requirements Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 ation Issue Revision Index 1 4 foo anlage Product H08 SM OBS 2 Date 02 03 2015 Page 6 29 etwo Satellite Applica Facilities Aanagement Figure 1 Scanning geometry of ASCAT The disaggregation process see Fig below makes use of a fine mesh layer pre computed and stored ina parameter database The fine mesh information includes backscatter and scaling characteristics derived from SAR imagery from Envisat ASAR operating in the ScanSAR Global monitoring mode Figure 2 Principle of disaggregation by auxiliary data 1 2 2 Status of satellites and instruments The current status of MetOp and Envisat satellites is shown in Table 01 Satellite Launch End of service Height
32. mainly due to conflicting operating modes of the ENVISAT instruments lt Q OFF LINE ACTIVITY lt gt lt REAL TIME ACTIVITY SP WARP H Disaggregation processing Resampling to European projection Product data type constitution Quality flag generation Figure 3 Flow chart of the processing chain for the disaggregated soil moisture product 1 2 4 Architecture of the products generation chain The architecture of the SM OBS 2 product generation chain is shown in Fig 09 The figure includes mention of the primary source of satellite data the Global surface soil moisture product generated by EUMETSAT and disseminated via EUMETCast and of the source for disaggregation parameters the ASAR instrument on Envisat with data available from the ESA archive Mart nez Fern ndez J and A Ceballos 2005 Mean soil moisture estimation using temporal stability analysis Journal of Hydrology 312 28 38 Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 Network of Stee Apicatn a H SAF Issue Revision Index 1 4 Hyaroiogy and Water Product HO8 SM OBS 2 Date 02 03 2015 l Page 9 29 EUMETCast Ab A A Envisat Level 0 Global surface P soil moisture is CDA amp EARS e EUMETCast reception EUMETCast ESA ASAR archive Development of the disaggregated surface Provision of software soil moisture and database for Global Figure 4 Conceptual ar
33. national meteorological and hydrological Institutes of Austria Belgium Bulgaria Finland France Germany Hungary Italy Poland Slovakia Turkey and from ECMWF The EUMETSAT Product User Manual PUM 08 Product H08 SM OBS 2 Date 02 03 2015 Page 28 29 Annex 4 Acronyms AMSU AMSU A AMSU B ATDD AU BfG CAF CDOP CESBIO CM SAF CNMCA CNR CNRS DMSP DPC EARS ECMWF EDC EUM EUMETCast EUMETSAT FMI FTP GEO GRAS SAF HDF HRV H SAF IDL IFOV IMWM IPF IPWG IR IRM ISAC ITU LATMOS LEO LSA SAF LST M t o France METU MHS MSG MVIRI MW NEAT NESDIS NMA NOAA NWC SAF NWP NWP SAF O3M SAF OMSZ Advanced Microwave Sounding Unit on NOAA and MetOp Advanced Microwave Sounding Unit A on NOAA and MetOp Advanced Microwave Sounding Unit B on NOAA up to 17 Algorithms Theoretical Definition Document Anadolu University in Turkey Bundesanstalt f r Gewasserkunde in Germany Central Application Facility of EUMETSAT Continuous Development Operations Phase Centre d Etudes Spatiales de la BIOsphere of CNRS in France SAF on Climate Monitoring Centro Nazionale di Meteorologia e Climatologia Aeronautica in Italy Consiglio Nazionale delle Ricerche of Italy Centre Nationale de la Recherche Scientifique of France Defense Meteorological Satellite Program Dipartimento Protezione Civile of Italy EUMETSAT Advanced Retransmission Service European Centre for Medium range
34. nd 34N to 48 5N with the software wn NRT 1 1 inversion 1 06 Section 0 Length of Section 0 8 byte s Total length of BUFR message 88 byte s BUFR edition number 4 Section 1 Length of Section 1 22 byte s Originating subcentre 0 Originating centre 0 Update sequence number 1 Flag Presence of section 2 0 Local table version number 0 Data category 0 Data subcategory 0 Local data sub category 0 Year 2012 Month 12 Day 6 Hour 20 Minute 48 Second 0 BUFR master table 0 BUFR master table version number 3 Section 3 Length of Section 3 28 byte s Reserved 0 Number of data subsets 1 Data type data compression 0 Data descriptors unexpanded 025061 201129 202130 025062 202000 201000 006002 006002 005002 0 005002 FoOMOANADOBWNE Data descriptors expanded 1 025061 SOFTWARE IDENTIFICATION AND VERSION NUMBER 2 025062 DATABASE IDENTIFICATION 3 006002 LONGITUDE COARSE ACCURACY 4 006002 LONGITUDE COARSE ACCURACY 5 005002 LATITUDE COARSE ACCURACY 6 005002 LATITUDE COARSE ACCURACY Subset 1 1 SOFTWARE IDENTIFICATION AND VERS 0 10120000000000E 004 CCITTIAS WH NRT 1 1 2 DATABASE IDENTIFICATION 0 10600000000000E 001 NUMERIC 3 LONGITUDE COARSE ACCURACY 0 9500000000000 0E 001 DEGREE 4 LONGITUDE COARSE ACCURACY 0 14000000000000E 002 DEGREE 3 LATITUDE COARSE ACCURACY 0 3400000000000 0E 002 DEGREE 6 LATITUDE COARSE ACCURACY 0 48500000000000E 002 DEGREE 3 Message 2
35. nual PUM 08 ko Sorene Aopicate H SAF Issue Revision Index 1 4 aa amera ngaret Product H08 SM OBS 2 Date 02 03 2015 Page 25 29 Annex 3 Introduction to H SAF The EUMETSAT Satellite Application Facilities H SAF is part of the distributed application ground segment of the European Organization for the Exploitation of Meteorological Satellites EUMETSAT The application ground segment consists of a Central Application Facilities located at EUMETSAT Headquarters and a network of eight Satellite Application Facilities SAFs located and managed by EUMETSAT Member States and dedicated to development and operational activities to provide satellite derived data to support specific user communities see Figure 9 CONTROL AND FLIGHT DATA ACQUISITION OPERATIONS PRE PROCESSING EUMETSAT HEADQUARTERS METEOROLOGICAL PRODUCT SATELLITE APPLICATION EXTRACTION FACILITIES EUMETSAT HEADQUARTERS WITHIN EUMETSAT MEMBER STATES DATA CENTRE EUMETSAT HEADQUARTERS REAL TIME DISSEMINATION OF DATA AND PRODUCTS VIA EUMETCAST ey ie Figure 9 Conceptual scheme of the EUMETSAT Application Ground Segment Figure 10 here following depicts the composition of the EUMETSAT SAF network with the indication of each SAF s specific theme and Leading Entity Doc No SAF HSAF PUM 08 the EUMETSAT Product User Manual PUM 08 Network of Salse Appicalon H SAF Issue Revision Index 1 4 a rela Product H
36. oduct Soil moisture between 20 and 0 Soil moisture between 100 and 120 Correction of wet backscatter reference Table 7 The WMO codes for BUFR flag No 40005 Soil moisture correction flags NOTE The nominal range for the surface soil moisture is 0 100 In extreme cases the extrapolated backscatter at 40 degrees incidence angle may exceed the dry or the wet backscatter reference In these cases the value provided by the measurement process of surface soil moisture is respectively less than 0 or more than 100 6 Slope Mid Aftbeam out of range 8 Soil moisture above 120 _ Doc No SAF HSAF PUM 08 Issue Revision Index 1 4 Product HO8 SM OBS 2 Date 02 03 2015 Page 17 29 All 16 Table 8 The WMO codes for BUFR flag No 40006 Soil moisture processing flags gree Product User Manual PUM 08 NOTE See Note under Flag No 40005 in previous table The first telegram in the operational BUFR files is different and provides the user with some information useful for deciding whether the file actually has some data of interest in it and is worth further decoding in particular the prologue reports the geographical coverage of the dataset Template of the prologue 1 025061 SOFTWARE IDENTIFICATION AND VERSION NUMBER 2 025062 DATABASE IDENTIFICATION 3 006002 LONGITUDE COARSE ACCURACY 4 006002 LONGITUDE COARSE ACCURACY 5 005002 LATITUDE COARSE ACCURACY 6 005002 LATITUDE COARSE ACCURACY
37. ray is used to pass the dimids of the dimensions of the netCDF variables All netCDF variables we are creating share the same two dimensions DIMIDS LON_DIMID LAT_DIMID Define the netCDF variables for the soil moisture data CALL CHECK NF90_DEF_VAR NCID soil_ moisture NF90_ FLOAT DIMIDS SOMO_VARID CALL CHECK NF90_PUT_ATT NCID SOMO_VARID UNITS SOMO_ UNITS Page 19 29 Doc No SAF HSAF PUM 08 The EUMETSAT Product User Manual PUM 08 ication H SAF Issue Revision Index 1 4 y sr Product H08 SM OBS 2 Date 02 03 2015 Page 20 29 CALL CHECK NF90_PUT_ATT NCID SOMO_VARID valid_range SOMO_RANGE CALL CHECK NF90_DEF_VAR_DEFLATE NCID SOMO_VARID 1 1 9 CALL CHECK NF90_DEF_VAR NCID soil_ moisture_error NF90_FLOAT DIMIDS SOMO_ERR_VARID CALL CHECK NF90_PUT_ATT NCID SOMO_ERR_VARID UNITS SOMO_ UNITS CALL CHECK NF90_PUT_ATT NCID SOMO_ERR_VARID valid_range SOMO_RANGE CALL CHECK NF90_DEF_VAR_DEFLATE NCID SOMO_ERR_VARID 1 1 9 CALL CHECK NF90_DEF_VAR NCID soil_ moisture_correction_ flag NF90_ SHORT DIMIDS SOMO_FLAG5_VARID CALL CHECK NF90_PUT_ATT NCID SOMO_FLAGS5_VARID valid_range FLAG RANGE CALL CHECK NF90_DEF_VAR_DEFLATE NCID SOMO_FLAGS5 _VARID 1 1 9 CALL CHECK NF90_DEF_VAR NCID soil moisture_processing flag NF90 SHORT DIMIDS SOMO_FLAG6_VARID CALL CHECK NF90_ PUT _ATT NCID SOMO_FLAG6_VARID valid_range FLAG RANGE
38. sstessseossevsssstssosstresertssosssosseorveoostss resns 7 Table 4 Operational Product VersSiOnS ssssesssesssssressrrnssrresrrrsrtrnsrrrsrtesrtrssrtrsrtesstensttrsrteneteestresrteneteesrersreeseeee 12 Table 5 Statistical scores for SM OBS 2 ssesssesseeressrrnsrrresrrrsrrrssrersrtrsrtrssrersrtenstensrersrteustresreessteueteesreesreeseeee 13 Table 6 Summary instructions for accessing SM OBS 2 data cccccccsssecccesseccceeescceeeeseceeeeeceseeeeceesaeeeeeees 15 Table 7 The WMO codes for BUFR flag No 40005 Soil moisture correction flags ccsccceeeseeceeeeseeeees 16 Table 8 The WMO codes for BUFR flag No 40006 Soil moisture processing flags ccccesecccesseceeeeeeeeeees 17 List of Figures Figure 1 Scanning geometry Of ASCAT cccccssssccsosssscncssssesccussecccussscncussscnsousuessousssencussscneossuessoussscneuesscneues 6 Figure 2 Principle of disaggregation by auxiliary data ccceccccccsssccccessccecesececeesececeeneceeseeseceseeneceseuneceesenes 6 Figure 3 Flow chart of the processing chain for the disaggregated soil moisture PrOduct cccceeeeceeeeeee 8 Figure 4 Conceptual architecture of the SM OBS 2 production Chain ssscccccccssseceeceeesseceeeeeaeeeeeeeeas 9 Figure 5 Example of small scale surface soil moisture SM OBS 2 from ASCAT Note the two side swaths 550 km each and the 670 km gap in between MetOp A 30 September 2009 20 12 UTC
39. vity The only product in H SAF that provides profiles below surface is SM ASS 1 Volumetric soil moisture roots region by scatterometer assimilation in NWP model 2 1 2 Observing cycle and time sampling The observing cycle At is defined as the average time interval between two measurements over the same area In general the area is for GEO the disk visible from the satellite for LEO the Globe In the case of H SAF we refer to the European area shown in Fig 04 In the case of LEO the observing cycle depends on the instrument swath and the number of satellites carrying the addressed instrument The ASCAT swath is 550 550 km on the two sides with a 670 km gap in between The gap left by ascending orbits is mostly filled by descending orbits In average the observing cycle over Europe is At 36 h improving with latitude However areas where disaggregation parameters are not available are not processed therefore the SM OBS 2 maps leave several gaps of coverage These gaps will progressively reduce along with progress of the ASAR coverage and ultimately with the availability of the ESA GMES Sentinel 1 launch scheduled in 2012 2 1 3 Timeliness The timeliness is defined as the time between observation taking and product available at the user site assuming a defined dissemination mean The timeliness depends on the satellite transmission facilities the availability of acquisition stations the processing time required to gen
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