System Requirement Document (SRD) - H-SAF

H-SAFSystem Requirement DocumentDoc. No: SAF/HSAF/SRD/2.1Issue: Version 2.1Date: 20/06/2008Page: 22/102The Table lists the satellites to be used pre-operationally and experimentally during theDevelopment Phase and those to be available during the Operational Phase (> 2010).Precipitation Anticipated product quality in the operational phase Satellites / Sensorsproducts Resolution Accuracy Cycle Delay Development OperationsPrecipitationrate (by MWonly) with flagfor phase10 km (MIS)15 km (additional GPMsatellites)10-20 % (> 10 mm/h)20-40 % (1-10 mm/h)40-80 % (< 1 mm/h)9 h (MISonly)3 h (fullGPM)20 minMeteosat(MVIRI, SEVIRI)+DMSP(SSM/I, SSMIS)Meteosat(SEVIRI)+NPPPrecipitationrate (by MW +IR) with flagfor phase10 kmRanging from that ofMW to one degradedby an extent15 min 10 min+NOAA + MetOp(AMSU-A,AMSU-B/MHS)+(ATMS)+NPOESS(CMIS, ATMS)EOS/Aqua+Cumulateprecipitation(by MW + IR)on 3, 6, 12, 24 h10 kmTentative:10 % over 24 h30 % over 3 h3 h 20 min(AMSR-E,AMSU-A, HSB)+TRMM(TMI, PR, LIS)Further satellitesof the GPM(all equipped atleast with a MWradiometer, onealso with radar)Soil moisture Anticipated product quality in the operational phase Satellites / Sensorsproducts Resolution Accuracy Cycle Delay Development OperationsSoil moisture inthe surfacelayerSoil moisture inthe roots region25 km (from ASCAT)50 km (from MIS)25 km (from ASCAT)50 km (from MIS)0.05 m 3 m -3 (dependingon vegetation)To be assessed(model-dependent).Tentative: 0.05 m 3 m -336 h (fromASCAT)9 h (fromMIS)36 h (fromASCAT)9 h (fromMIS)2 h2 hERS 1 / 2(AMI-SCAT)+MetOp(ASCAT)+EOS/Aqua(AMSR-E)MetOp(ASCAT)+NPOESS(MIS)Snow Anticipated product quality in the operational phase Satellites / Sensorsproducts Resolution Accuracy Cycle Delay Development Operations