System Requirement Document (SRD) - H-SAF

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H -SAFSystem Requirement DocumentDoc. No: SAF/HSAF/SRD/2.1Issue: Version 2.1Date: 20/06/2008Page: 54/102CommentVerification TSR-31070-FUN-PRG Level Component SMDescriptionCommentThe system shall produce the “Volumetric soil moisture (roots region) byscatterometer assimilation in NWP model” product (SM-ASS-1)Verification TSR-31080-FUN-PRG Level Component SMDescriptionCommentResolution of SM-ASS-1 product shall be 25 km (from ASCAT) and 50 km(from MIS)Verification TSR-31090-FUN-PRG Level O Component SMDescription Accuracy of SM-ASS-1 product should be 0.05 m 3 m -3Comment it is an attempt only (model dependent) Verification TSR-31100-FUN-PRG Level Component SMDescriptionCommentFrequency of SM-ASS-1 product shall be 36 h (from ASCAT) and 9h(from MIS)Verification TSR-31150-FUN-PRG Level Component SMDescriptionCommentSoil moisture operational chain shall be triggered by the reception oflevel-II processed ASCAT data filesVerification TSR-31270-FUN-PRG Level Component SM
H -SAFSystem Requirement DocumentDoc. No: SAF/HSAF/SRD/2.1Issue: Version 2.1Date: 20/06/2008Page: 55/102DescriptionCommentA reference database for cal/val, which shall archive elements describedin Table 8, shall be set upVerification DElement for SM consistency controlIn-situ data (e.g. Global Soil Moisture Data Bank, time domain reflectometry)Related space-based soil moisture missions (e.g. SMOS)Global water datasets (e.g. Global Lakes and Wetlands Database GLWD)Global snow datasets (e.g. Daily Northern Hemi-sphere Snow and Ice Analysisfrom United States National Snow and Ice Data Center NSIDC, Snow mapsbeing produced by H-SAF consortium)Global topography datasets (e.g. United States Geological Survey GlobalTopographic Data GTOPO30)Global freeze/thaw datasets (e.g. NCEP/NCAR Global Tropospheric Analyses,ECMWF’s 40-year Re-Analysis ERA-40)Table 8 Elements for soil moisture consistency control3.1.4.3 Snow Parameter subsystemSR-33040-FUN-PRG Level Component SPDescriptionCommentThe system shall produce at FMI the “snow detection (snow mask) byVIS/IR radiometry” (SN-OBS-1a) observation product in flat/forested areaVerification TSR-33050-FUN-PRG Level Component SPDescriptionCommentThe system shall produce at FMI the “snow status (dry/wet) by MWradiometry” (SN-OBS-2) observation product in flat/forested areaVerification TSR-33051-FUN-PRG Level Component SP
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System Requirement Document (SRD) - H-SAF

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