Product User Manual (PUM) for product H15A – PR-OBS - H-SAF
Contents
1. Management Page 18 22 Annex 2 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 ocated 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 6 CONTROL AND FLIGHT DATA ACQUISITION OPERATIONS PRE PROCESSING Sen R ES EUMETSAT HEADQUARTERS Ea 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 6 Conceptual scheme of the EUMETSAT Application Ground Segment Figure 7 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 15A The EUMETSAT Product User Manual PUM 15A Stee Apion a H SAF Issue Revision Index 1 1 hyaroogy ard water Product H15A PR OBS 06A Date 10 04 2015 Page 19 22 H SAF NWC SAF Support to Operational Hydrology and Wat2. 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 Meteorological Administration of Romania National Oceanic and Atmospheric Administration Agency and satellite SAF in suppo
3. Germany Hungary Italy Poland Slovakia Turkey and from ECMWF Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 21 22 Annex 3 Acronyms AMSU AMSU A AMSU B ATBD 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 Baseline Document Anadolu University 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 Weather Forecasts EUMETSAT Data Centre previously known as U MARF Short for EUMETSAT EUMETSAT s Broadcast System for
4. and space coincident geostationary 10 8 um IR Tgp data using a 15 minute maximum allowed time offset between the pixel observation times The main inputs to the RU procedure are e geo located equivalent blackbody temperatures Tgg observed by the GEO platform and auxiliary data e g cloud type and cloud top height e H SAF dedicated NEFODINA data e rain rate maps that in principle can arise from any satellite based MW data and algorithm e observation geometry satellite zenith angle The package can be subdivided into five main parts namely 1 pre processing preparation and pre processing of GEO data ingest of rain rate maps at the LEO space time resolution To allow the proper initialization of the statistical relationships the input data must be collected for a time window that start several hours before the study period According to the present constellation of MW equipped satellites the parameter MAXHOURS is currently set to 24 h 2 co location co located GEO and LEO observations are collected for the selected study area and accumulated from oldest to newest 3 Convective Objects selection process able to retrieve suitable NEFODINA information to identify the Convective Objects CO on GEO data 4 set up of geo located statistical relationships applying the probability matching technique only on to identified CO 5 assign rain rate to each GEO pixel production of rain rate maps at the GEO space time resolution T
5. decimalScaleFactor 0 numberOfBitsContainingBHachPackedValue 16 0 Floating point gqrib2 5 1vtable typeOfOriginalFieldValues 0 grib 2 Section 6 BIT MAP SECTION Q Bit map is present in this product grib2 6 0 table bitMapIndicator 0 missingValue 0 0 grib 2 Section 7 data grib 2 Section 0 END The quality flag of PR OBS6A output is encoded as a GRIB2 please refer to WMO GRIB2 format documentation available at www wmo int with the following keys GRIB Space products grib2 tables 3 0 0 table discipline 3 editionNumber 2 Rome RSMC grib1 0 table originatingCentre 80 subCentre 0 Observation time grib2 tables 3 1 2 table SignificanceOfReferenceTime 3 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 17 22 dataDate Z0130223 dataTime 2342 Operational test products grib2 tables 3 1 3 table productionStatusOfProcessedData 1 Processed satellite observations grib2 tables 3 1 4 table typeOfProcessedData 6 numberOfDataPoints 1710000 There is no appended list grib2 tables 3 3 11 table interpretationOfNumberOfPoints 0 PLPresent 0 Space view perspective orthographic grib2 tables 3 3 1 table gridDefinitionTemplateNumber 90 Earth assumed oblate spheroid with major and minor axes specified by data producer grib2 tables 3 3 2 ta
6. threshold and target using the rain gauge for comparison Regarding the intermediate precipitation class i e 1 lt R lt 10 mm h the RMSE exceeds the threshold by more than 50 Annual average of RMSE Precipitation REAUICEmMENTIRMSE 2 radar gauge radar class land E coast pion J90 T80 25 Table 3 Product requirement and compliance rn for product H15A Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 13 22 5 Product availability 5 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 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 5 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
7. Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product H15A PR OBS 06A Date 10 04 2015 Page 1 22 Product User Manual PUM 15A 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 H15A PR OBS 6A Blended SEVIRI Convection area LEO MW Convective Precipitation Reference Number SAF HSAF PUM 15A Issue Revision Index 1 1 Last Change 10 Apr 2015 Doc No SAF HSAF PUM 15A Product User Manual PUM 15A aan F Issue Revision Index 1 1 Product H15A PR OBS 06A Date 10 04 2015 Page 2 22 DOCUMENT CHANGE RECORD 02 03 2015 Baseline version prepared for ORR1 Part 5 Revised version which acknowledges the outcomes of ORR1 Part5 1 1 10 04 2015 e Inclusion of product accuracy information in section 4 1 2 RID 01 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 3 22 INDEX T PUES Gr Tie Oe SN rasta eee atna E E A A 5 2 intr duction to DFOGUCT PRO BS 6 A ssscedsceicssdcotaucvi saad diedseun ceniaceduend ants ENEE O EE SEAE EENE N N 5 2 1 Procpe o em Zeer ee ee nm ene te Gee ren artes nr ne Gn See ee nee nee ero eee 5 2 2 Status OT satellites and instrUMENtS sscaesicesesaiarcosssasnccscsicacav
8. UKMO Turkish State Meteorological Service Technische Universit t Wien in Austria Unified Meteorological Archive and Retrieval Facility University of Ferrara in Italy User Requirements Document Universal Coordinated Time Visible Zentralanstalt f r Meteorologie und Geodynamik of Austria
9. aniinsesesiwucesuassanunctboncasenseaasesteransnaruenienacees 6 2 3 Highlights of TO QI COKIN esasccensanetcewetaunccssano cosanwcasasiedseumtausaenctesaannansesseecusienemne ten sesnonvareuteoeeiess 7 2 4 Architecture of the products generation chain cccescccccsssccccesseceeeesececcesecceeeesecessuecesseeceeteeaeeetas 8 2 5 Product coverage and appearancte uicsatine i shceGrecaveisnndavesteadewwaewncessinwceuncesoieeasiaddosninecnsi s 9 3 Product operational charactertistiCS sesisriisersren esnean ensnare aer N EEN EES 11 3 1 Horizontal resolution and sampling wisavcesesctrasiecanonaiecccneddunwnovererddsevsneaevasiwossaddensouwsansesseanesvanunadencnens 11 3 1 1 V rtical resolution If applicable essensen 11 3 1 2 Observing cycle and time sampling ccccccseseccccessccccesececceecceeeeseceseueceeeeneceeseusecetseneceesenes 11 5 13 UVC MCS N PEE E AEE enna ce E A E E E AEE csuaneieeeed E E es 11 d Produc y daOn ee E E A 11 5 Product avalan yena E svauetcesencecensanmocedouin qseentauneacae 13 5 1 TEn O U E a E A eee ee eee ae cere ae 13 5 2 CS eae UA pe sengcs sated ccseeececcteenoce dente acaepannusataeecceauduan seuduneeasaa sao sesacabessaenbootesadaeeascsssouecceds 13 5 3 FOr INC COC se cece sataricon cesta ee So ote aces E 13 5 4 Des CROTON OT UNC NES area sanctocsesadavenisenconeasccseauccatsanie sedovenosensacuesceuenesesudaauacidineeaseasoresads 13 Annex 1 PR OBS 6A output description cccscccsssencssrencssterecseecacs
10. 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 control 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 5 3 Formats and codes Two type of files are provided for H15A PR OBS 6A e the digital data coded in GRIB2 e the image like maps coded in PNG In the directory utilities the folder Grib_ decode provides the instructions for reading the digital data 5 4 Description of the files Product H15A PR OBS 6A Bl
11. atellite data have been submitted to scaling and filtering procedures Two streams of activities are carried out e evaluation of general statistics multi categorical and continuous to help in identifying existence of pathological behaviour e selected case studies useful in identifying the roots of such behaviour Detailed report of the product validation activity for product H15A PR OBS 6A is provided as following document e PVR 15A Product Validation Report for H15A PR OBS 6A 4 1 2 Product Accuracy User requirements for precipitation observation have been stated by authoritative entities such as WMO EUMETSAT and the GPM planning group Those requirements acknowledging the fact that the accuracy of measuring precipitation from space depends on the precipitation type or to simplify intensity are stated for three ranges of intensity e light lt 1 mm h medium 1 mm h to 10 mm h heavy gt 10 mm h It is noted that for the product H15 PR OBS 6A the type lt 1 mm h is not applicable The following statistical scores are reported for more information see PVR O6A e RMSE Root Mean Square Error expressed as of the rain rate observed at station Table 3 summarizes the statistical scores obtained by the yearly validation of H15A with radar and rain gauge data For the highest precipitation class H15A performs RMSE slightly exceeds inland the threshold when compared with the radar observations while it is in between
12. ble shapeOfTheEarth 3 Ni 1900 Nj 900 latitudeOfSubSatellitePointInDegrees 0 longitudeOfSubSatellitePointInDegrees 0 apparentDiameterOfEFarthInGridLengthsInxDirection 5022 apparentDiameterOfEarthInGridLengthsInyDirection 3568 xCoordinateOfSubSatellitePoint 764000 yCoordinateOfSubSatellitePoint 1774000 iScansNegatively 0 jScansPositively 0 jPointsAreConsecutive 0 alternativeRowScanning 0 orientationOfTheGrid 0 altitudeOfTheCameraFromTheEarthSCenterMeasurediInuUnitsOfTheEFarth 6610700 xCoordinarteOrOr1ginOrsSectorimage 0 yCoordinateOfOriginOfSectorImage Os typeOfGrid space view NV 0 Satellite product grib2 tables 3 4 0 table productDefinitionTemplateNumber 30 Image format products grib2 tables 3 4 1 3 table parameterCategory 0 Unknown code table entry grib2 tables 3 4 2 3 0 table parameterNumber 192 Unknown code table entry grib2 tables 3 4 3 table typeOfGeneratingProcess 192 observationGeneratingProcessIdentifier 0 numberOfContributingSpectralBands 0 numberOfValues 135 type0i Packing grid simple A bit map applies to this product and is specified in this Section grib2 tables 3 60 0 table bitMapindicator 0 bitmapPresent 1 Product User Manual PUM 15A can ipo z H SAF Issue Revision Index 1 1 The EUMETSAT Network of Satellite Application Facilities purra Product H15A PR OBS 06A Date 10 04 2015
13. cscusrencustencestenesssvasssneusrencustenecssacacssneustens 15 Annex 2 Introduction to H SA Pisetececiesasdcaszecetexdsseinacsvadusercecasunisatdeneagaacbenteceduntcdeseioesascasuia susddanedeoneeessiaceeacens 18 The EUMETSAT Satellite Application Facilities ccccccssccccssseccccesscceceesececeeecceeeeeccesseecesseneceeseneeeetsuneees 18 PUMO EO CES Gs AP a A A E A EAA 19 Products Deliveries of the H SAF ccccescccsssscccccsscccccssceccessececceseseceeseseceescseeeeseseceuseseceeeseceeueesensesesenes 20 DY SUCH OVE TVI CW esorare E hebebebinidenvenoncina seman A ieee eedesesia 20 PUI i FC 10S csc are een E hve wet E E E E EE E E E T AE E 21 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 4 22 List of Tables Table 1 Current status of satellites potentially utilised for PR OBS 6A cccccccccsssssccceesesssseeceesessseeecessesaeeeeesseaas 6 Table 2 Main features of SEVIRI sex scsenccxssestsunasisacecgesaanxyesiennoubsesteuusaveasevacatachnue Sonreueesto wea E a senses geese venison 7 Table 3 Summary instructions for accessing PR OBS 6A data cccccccsscccesecsceeeceeenececeeeeeeeeceseueceeeueeeneneees 14 List of Figures Figure 1 The H SAF required coverage in the Meteosat projection cccccsssscccccsssssscccessssseeeeesssseeeeessssnseeeeesseaas 5 Figure 2 Flow chart of the LEO MW GEO IR blending p
14. de the PR OBS 1 outputs in the RU processing was built By using PR OBS 1 in addition to PR OBS 2A thus improving the frequency of look up table updating the accuracy of PR OBS 6A is expected to improve Instruments for H15A PR sate unon eats poe ot ae SE AMSU A defective MHS Not yet used for PR OBS 6A Currently not used waiting for adapting the PR OBS 2 software to handle the defect of one AMSU A channel Table 1 Current status of satellites potentially utilised for H15A PR OBS 6A Table 2collects the main features of SEVIRI As mentioned SSM I SSMIS AMSU A and MHS are not directly entered in the H15A PR OBS 6A generation chain thus are not described here Descriptions of SSM I and SSMIS and of AMSU A and MHS can be found in the Product User Manuals PUM 01 on PR OBS 1 and PUM 02A B on PR OBS 2A B Note AMSU B is no longer used for PR OBS 2A B Satellites Meteosat 8 Meteosat 9 Meteosat 10 Meteosat 11 i e Meteosat Second Generation Status Operational Utilisedin the period 2002 to 2024 Mission Multi purpose imagery and wind derivation by tracking clouds and water vapour features Instrument type Multi purpose imaging VIS IR radiometer 12 channels 11 narrow bandwidth 1 high resolution broad bandwidth VIS N A broad bandwidth channel 10 1 1 albedo 7 28 1 albedo 3 1 albedo Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product H15A PR OBS 06A Da
15. ended SEVIRI Convection area LEO MW Convective Precipitation It is also identified as H15A product of the H SAF product list The table below shows the detailed information to access the product using the H SAF FTP server ftp ftphsaf meteoam it Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product H15A PR OBS 06A Date 10 04 2015 Page 14 22 Product User Manual PUM 15A Content Blended SEVIRI Convection area LEO MW Convective Precipitation Repository root directory ftp ftphsaf meteoam it products h15 Naming convention description e yyyymmdd year month day e hhmm hour and minute of last scan line northernmost e rom fixed value identifier of the receiving station which is Rome Suffix for Digital Data grb gz compressed GRIB file and qlt grb gz compressed GRIB file Suffix for Image Data png image data file H15A PR OBS 6A Digital Data Sub repository h15_cur_mon_grb data of last 60 days File name h1i5_yyyymmdd_hhmm_rom grb gz h1i5_yyyymmdd_hhMM_rom_qlt grb gzExample ftp ftphsaf meteoam it products h15 h15 cur mon grb h15 20150209 2027 rom grb gz ftp ftphsaf meteoam it products h15 h15 cur mon grb h15 20150209 2027 rom _ qlt grb gz H15A PR OBS 6A Image Data Sub repository h15_cur_mon_png data of last 60 days File name H15_yyyymmdd_hhmm_rom png Example ftp ftphsaf meteoam it products h15 h15 cur mon png hi5 20150209 2042 rom pn Table 4 Summary instruc
16. er Management Led by Italian Meteorological Institute Support to Nowcasting and Very Short Range Forecasting Led by Agencia Estatal de Meteorologia Spain JR a r 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 7 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 against floods landslides avalanches and evaluating water resources the activity includes e downscaling up
17. he rain rate are calibrated applying a calibration formula with coefficients derived from a Statistical analysis applied to a dataset of H15A PR OBS 6A products and radar data t Turk J F G Rohaly J Hawkins E A Smith F S Marzano A Mugnai and V Levizzani 2000 Analysis and assimilation of rainfall from blended SSMI TRMM and geostationary satellite data Proc 10th AMS Conf Sat Meteor and Ocean 9 66 69 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 8 22 2 4 Architecture of the products generation chain The architecture of the H15A PR OBS 6A product generation chain is shown in Figure 2 PRECIPITATION RATE Figure 2 Flow chart of the LEO MW GEO IR blending precipitation rate processing chain Indeed Figure 2 refers to the architecture of the product H15A PR OBS 6A that includes e the Rapid Update process applied on to NEFODINA CO and based on frequent SEVIRI IR images calibrated by the infrequent MW derived precipitation data as retrieved from SSM 1 and SSMIS PR OBS 1 or from AMSU A and MHS PR OBS 2A PR OBS 1 microwave products are available with a delay of three hours as input of the second processing chain e the Morphing process applied on to NEFODINA CO and based on infrequent MW derived precipitation maps and MW precipitation pseudo maps interpolated at frequent intervals by explo
18. iting the dynamic information provided by the SEVIRI images Doc No SAF HSAF PUM 15A The EUMETSAT Product User Manual PUM 15A Stee hopicaten H SAF Issue Revision Index 1 1 Su yao a Woe Product H15A PR OBS 06A Date 10 04 2015 Page 9 22 2 5 Product coverage and appearance Figure 3 shows a SEVIRI image in its native projection and the processing area of product H15A PR OBS 6A Ad ia 2s a Skry PEAY AI eae a 7 gt in g lt i y 4 LA 4 ay Aa P i 4 Figure 3 SEVIRI image in the 10 8 Pim channel with indicated processing area Meteosat 9 day 03 Feb 2008 time 08 15 UTC The input area includes 900 lines x 1900 columns from 70 N southwards However the algorithm stops processing above 67 5 N thus does not cover the full H SAF area it could but the product quality would sharply deteriorate Doc No SAF HSAF PUM 15A ne Product User Manual PUM 15A eTWOrK O Satellite Application ication Issue Revision Index 1 1 Product H15A PR OBS 06A Date 10 04 2015 Page 10 22 Since data are delivered coded in GRIB2 as values in grid points of known coordinates those of the SEVIRI pixels the product can be plotted in any projection of user s choice The example of product shown in Figure 4 is in the projection actually used in the png files on the web site rectangular stereography centred on 42 N 10 F The represented area is a fraction of the total pr
19. lled Rapid Update and in H15 PR OBS 6A is applied only to convective structures The SEVIRI channels utilised for convective area identification are 6 2 7 3 and 10 8 um The calibration of Tsp s in term of precipitation rate by means of MW measurements supposedly accurate implies the existence of good correlation between Tgg and precipitation rate This is fairly acceptable for convective precipitation less for non convective Nevertheless Rapid Update is currently the only operational algorithm enabling precipitation rate estimates with the time resolution required for nowcasting In addition frequent sampling is a prerequisite for computing accumulated precipitation product PR OBS 5A and PR OBS 5B Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 6 22 2 2 Status of satellites and instruments H15 PR OBS 6A does not retrieve precipitation from MW sensors MW derived precipitation data come from SSM I and SSMIS utilised by PR OBS 1 and AMSU A and MHS utilised by PR OBS 2A The current status of the satellites possibly to be utilised for PR OBS 6A is shown in Table 1 Two parallel operational chains are defined In the first chain only the products of PR OBS 2 are considered as input to H15A PR OBS 6A because of the delay in receiving the SSM I data via EUMETCAST The second processing chain is running with a delay of 3 hours to inclu
20. me 3 3 Observation time grib2 1 2 table x SignificanceOfReferenceTime 3 year month day hour minute second 1 Operational test products grib2 1 3 table productionStatusOfProcessedData l 6 Processed satellite observations grib2 1 4 table typeOfProcessedData 6 0 Specified in Code table 3 1 or152 3 0 tabie 7 S0uUrCEOEGrI ODE inition numberOfDataPoints 1710000 numberOfOctetsForOptionalListOfNumbersDefiningNumberOfPoints 0 Q There is no appended list grib2 3 11 table interpretationOfListOfNumbersDefiningNumberOfPoints 0 90 Space view perspective orthographic grib2 3 1 table gridDefinitionTemplateNumber 90 3 Earth assumed oblate spheroid with major and minor axes specified by data producer grib2 3 2 table shapeOfTheEarth 3 scaleFactorOfRadiusOfSphericalEarth 0 scaledValueOfRadiusOfSphericalEarth 0 scaleFactorOfMajorAxisOfOblateSpheroidEarth 4 scaledValueOfMajorAxisOfOblateSpheroidEarth 63781400 scaleFactorOfMinorAxisOfOblateSpheroidEKarth 4 scaledValueOfMinorAxisOfOblateSpheroidEarth 63567550 numberOfPointsAlongXAxis 1900 numberOfPointsAlongYAxis 900 latitudeOfSubSatellitePoint 0 longitudeOfSubSatellitePoint 0 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 16 22 0 00000000 3 0 1 direction increments not given 4 0 J direction increments not give
21. n 5 0 Resolved u and v components of vector quantities relative to easterly and northerly directions See gtib2 3 3 table resolutionAndComponentFlags 0 apparentDiameterOfEFarthInGridLengthsiInxDirection 3622 apparentDiameterOfEarthInGridLengthsiInyDirection 3568 xCoordinateOfSubSatellitePoint 764000 yCoordinateOfSubSatellitePoint 1774000 0 00000000 1 0 Points of first row or column scan in the 1 x direction 2 0 Points of first row or column scan in the j y direction 3 0 Adjacent points in i x direction are consecutive 4 0 All rows scan in the same direction See grib2 3 4 table scanningMode 0 orientationOfTheGrid 0 altitudeOfTheCameraFromTheFarthSCenterMeasuredinunitsOfTheEKarth 6610700 xCoordinateOfOriginOfSectoriImage 0 yCoordinateOfOriginOfSectoriImage 0 grib 2 Section 4 PRODUCT DEFINITION SECTION numberOfCoordinatesValues 0 30 Satellite product grib2 4 0 table productDefinitionTemplateNumber 30 1 Quantitative products grib2 4 1 3 table parameterCategory l 0 Estimated precipitation kg m 2 grib2 4 2 3 1 table parameterNumber 0 8 Observation grib2 4 3 table x typeOfGeneratingProcess 8 observationGeneratingProcessIdentifier 3 numberOfContributingSpectralBands 1 grib 2 Section 5 DATA REPRESENTATION SECTION numberOfValues 1 10000 Q Grid point data simple packing grib2 5 0 table dataRepresentationTemplateNumber 0
22. ocessed area Obviously the map sequences are generally visualised as animations at 15 min intervals EUMETSAT H SAP PR OBS 6 Blended SEVIRI Convection area LEO MW Convective Precipitati O 30 75 ap 45 i at by i 30 ay 30 ri ty a F a a bn i i 1 L i kin kot 0 5 11 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Blending of NEFODINA SEVIRITR SSM I SSMIS MW AMSU MW 20141203 2357 ey 5014 Dec 4 00 08 81 Production SATELLITE_AREA_CAM C A Algortin 1 8 4 0 C M A Figure 4 Example of H15A PR OBS 6A product 2014 12 03 23 57 UTC Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 11 22 3 Product operational characteristics 3 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 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 resolu
23. recipitation rate processing Chain ssscecccceee 8 Figure 3 SEVIRI image in the 10 8 Elm channel with indicated processing area Meteosat 9 day 03 Feb OOS Ti I E E E voc cies uot do sia arnt neo denainenbba E OR 9 Figure 4 Example of PR OBS 6A product 2014 12 03 23 57 UTC ccccssccccccssssecceccseesececesseseceessaeeeeeeenas 10 Figure 5 Structure of the Precipitation Products Validation team ccccccssseccecsssccecseseceeeesececeeeeceeeeeeeeeas 12 Figure 6 Conceptual scheme of the EUMETSAT Application Ground Segment cccccccesseccceeseeeeeeeseeeees 18 Figure 7 Current composition of the EUMETSAT SAF Network cccccsssseccccceesseccecceeeseceeseeeeseceeseaeseeeeeeas 19 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 5 22 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 acti
24. rt 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 15A Issue Revision Index 1 1 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 PUM 15A Issue Revision Index 1 1 Date 10 04 2015 Page 22 22 Product User Manual PUM 15A Product H15A PR OBS 06A 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 IR Teknillinen korkeakoulu Helsinki University of Technology TRMM Microwave Imager on TRMM Tropical Rainfall Measuring Mission
25. scaling 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 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 20 22 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 countries see website hsaf meteoam it for details Following major areas can be distinguished within the H SAF s
26. te 10 04 2015 Page 7 22 Product User Manual PUM 15A 10 8 um 9 80 11 8 um 0 25 K 300 K 12 0 um 11 0 13 0 um 0 37 K 300 K 13 4 um 12 4 14 4 um 1 80 K 270 K Table 2 Main features of SEVIRI 2 3 Highlights of the algorithm The baseline algorithm for H15A PR OBS 6A processing is described in ATBD O6A Only essential elements are highlighted here The blending technique adopted for H15A PR OBS 6A is called Rapid Update RU see for instance Turk et al 2000 Key to the RU blended satellite technique is a real time underlying collection of time and space intersecting pixels from operational geostationary IR imagers and LEO MW sensors Rain intensity maps derived from MW measurements are used to create global geo located rain rate RR and Tgp equivalent blackbody temperature relationships that are renewed as soon as new co located data are available from both geostationary and MW instruments The association of MW retrieved rain rate and the SEVIRI Tgp is performed only within the part of clouds that NEFODINA individuate in the growing mature and dissipating convective cell In the software package these relationships are called histograms To the end of geo locating histogram relationships the globe or the study area is subdivided in equally spaced lat lon boxes 2 5 x2 5 As new input datasets MW and IR are available in the processing chain the MW derived rain rate pixels are paired with their time
27. tion 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 The IFOV of SEVIRI images is 4 8 km at nadir and degrades moving away from nadir becoming about 8 km in the H SAF area A figure representative of the H15A PR OBS 6A resolution is Ax 8 km Sampling is made at 5 km intervals consistent with the SEVIRI pixel over Europe 3 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 activity Note in H SAF the only product with vertical structure is SM ASS 1 Volumetric soil moisture 3 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 the case of H15A PR OBS 6A the product is generated soon after each SEVIRI new acquisition Thus the observing cycle is At 15 min and the sampling time also is 15 min 3 1 3 Timeliness The timeliness is defined as the time between observa
28. tion 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 generate the product and the reference dissemination means For H15A PR OBS 6A the time of observations is 1 5 min before each quarter of an hour ending at the full hour To this 5 min have to be added for acquisition through EUMETCast and 5 min for processing at CNMCA thus timeliness 6 15 min 4 Product validation 4 1 1 Quality assessment 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 and others the evaluation of accuracy requires validation i e comparison with the ground truth or with something assumed as true H15A PR OBS 6A as any other H SAF product is submitted to continuous quality assessment and validation activity entrusted to a number of institutes see Figure 5 Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product H15A PR OBS 06A Date 10 04 2015 Page 12 22 Product User Manual PUM 15A Germany Slovakia BfG SHMU Figure 5 Structure of the Precipitation products validation team Precipitation data are compared with rain gauges and meteorological radar Before undertaking comparison ground data and s
29. tions for accessing H15A PR OBS 6A data Doc No SAF HSAF PUM 15A Issue Revision Index 1 1 Product User Manual PUM 15A Product H15A PR OBS 06A Date 10 04 2015 Page 15 22 Annex 1 H15A PR OBS 6A output description Product H15A PR OBS 6A Blended SEVIRI Convection area LEO MW Convective Precipitation is based on the SEVIRI instrument on board Meteosat Second Generation satellites Main operational characteristics are connected with the identification of convection and the association of MW retrieved rain rate present in the same area with only active SEVIRI pixels this by recomposing rain intensity that the system as in input from PR OBS 1 and PR OBS 2 towards the only part of clouds that NEFODINA individuate in the growing mature and dissipating convective cell It is encoded as a GRIB2 please refer to WMO GRIB2 format documentation available at www wmo int with the following keys GRIB2 gribSectiono 7 3 Space products grib2 0 0 table discipline 3 editionNumber 2 section 1 7 80 Rome RSMC gribl1 0 table identificationOfOriginatingGeneratingCentre 80 identificationOfOriginatingGeneratingSubCentre 0 3 Current operational version number implemented on 2 November 2005 GribO2Z 71 0 cable gribMasterTablesVersionNumber 3 Q Local tables not used grib2 1 1 table versionNumberOfGribLocalTables 0 3 Observation time grib2 1 2 table SignificanceOfReferenceTi
30. vity Validation strategy Global statistics Product characterisation e Basic information on product availability Access modes Description of the code Description of the file structure An annex also provides general information on H SAF 2 Introduction to product H15 PR OBS 6A 2 1 Principle of sensing Product H15 PR OBS 6A is based on the IR images from b pt a an nae the SEVIRI instrument onboard Meteosat satellites The whole H SAF area is covered see Figure 1 but the resolution degrades with latitude An objective analysis of the equivalent blackbody temperatures Tgp is implemented to detect the convective structures of cloudy areas by means of NEFODINA an automatic tool running at CNMCA dedicated to now casting applications A map of convective clouds is performed to combine precipitation fields from MW instruments retrieved in H SAF PR OBS 1 and PR OBS 2A products The product is generated at the 15 min imaging rate of SEVIRI and the spatial resolution is consistent with the SEVIRI pixel Figure 1 The H SAF required coverage in the Meteosat projection The delay is in the range of 3 to 5 minutes with a potential maximum of 10 after end of reception of whole disk SEVIRI data at CNMCA Processing duration is principally dominated by convection identification algorithm The more is HSAF area affected by convection areas the more is processing time to analyze the whole scene The processing method is ca
31. ystem 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 CNMCA 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 national meteorological and hydrological Institutes of Austria Belgium Bulgaria Finland France
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