Medspiration â System Requirements Document - Data User Element

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Medspiration MED-SOC-RS-001_1 System Requirements Document Issue F Page Table, fig. Reference ID Text from reference documents SR entry 52 WP-ID2.1.4.1 Gross wind speed limit check 52 WP2-101 This test identifies wind speed values that fall outside of acceptable range of global wind speed values. The GDS specifies NASR the following rule: 52 Rule WP2-102 Rule 2.1.4.1: A valid wind speed observation must lie within a wind speed range of 0 < u < HighWindSpeed. Wind QLC.0090 2.1.4.1 speed values that fall outside this range are considered erroneous and should not be used within the GDS. 52 WP2-103 The HighWindSpeed value is set in a L2P configuration file maintained at the RDAC and GHRSST-PP International QLC.0120 Project Office. 52 WP-ID2.1.5 L2P Surface Solar Irradiance (SSI) value assignment 52 WP2-104 SSI measurements are required within the GDS to asses the magnitude and variability of significant diurnal SST variations, NASR for use in diurnal variability correction schemes, as part of the L4 SST analysis procedures and to interpret the relationship between satellite and in situ SST data. 52 WP2-105 Ideally a near contemporaneous SSI measurement from satellite sensors should be used but this is impossible for all NASR areas due to the limited number of geostationary satellite sensors available. 52 WP2-106 As a surrogate for a measured SSI value, NWP estimates may be used. MRG.0190 52 WP2-107 This test is used to set the L2P confidence data record variable SSI_value defined in Table A1.2.2 in Appendix A1. MRG.0180 MRG.0190 52 WP2-108 Near contemporaneous SSI measurement, coded according to the definition provided in Appendix A1 Table A1.2.2 should MRG.0180 be assigned to the L2P confidence data a record field SSI_value. 52 WP2-109 The source of SSI information must be specified in the L2P confidence data variable SSI_source (defined in Table 2.1.5) MRG.0200 and the difference in acquisition time between SST observation and SSI measure must be specified in the L2P confidence variable SSI_Dtime_from_SST. 53 WP2-110 The GDS specifies the following rules: see next 5 rows © 2004 SOC Page 142 of 193
Medspiration MED-SOC-RS-001_1 System Requirements Document Issue F Page Table, fig. Reference ID Text from reference documents SR entry 53 Rule WP2-111 Rule 2.1.5a: A 6 hourly integrated downwelling SSI measurement (e.g., derived from satellite measurements) should be MRG.0180 2.1.5a assigned to each SST pixel value using the SSI_value L2P confidence data variable. The SSI measurement nearest in space and time before the input pixel SST value should be used. 53 Rule WP2-112 Rule 2.1.5b: If no SSI measurement is available, a 6 hourly integrated SSI value derived from an NWP system (See MRG.0190 2.1.5b Appendix A3) nearest in space and time to the SST measurement should be used to set the value of SSI_value. 53 Rule WP2-113 Rule 2.1.5c: The source of data used to set the L2P confidence data variable SSI_value should be indicated in the MRG.0200 2.1.5c confidence variable SSI_source as defined in Table 2.1.5. 53 Rule WP2-114 Rule 2.1.5e: The difference in time expressed in hours between the time of SST measurement and the mean time of SSI MRG.0210 2.1.5e measurement/data validity should be entered into the L2P confidence data variable SSI_Dtime_from_SST. A value of 25 should be used to indicate unknown. 53 Table WP2-115 Code value for the source of the data used to assign the L2P confidence value SSI_source MRG.0200 2.1.5 53 WP2-116 The following QC checks should be applied to all input SSI data sets that are used at RDAC and GDAC. These tests are see following simple tests designed to verify that SSI data are within realistic limits. RDAC and GDAC may choose to implement more sophisticated QC procedures if deemed necessary. 53 WP-ID2.1.5.1 Gross SSI limit check 53 WP2-117 This test identifies data that fall outside of acceptable range of global SSI values. The GDS specifies the following rule: NASR 53 Rule 2.1.5.1 WP2-118 Rule 2.1.5.1: A valid 6 hourly integrated SSI observation/forecast must lie within a SSI range of 0 < SSI < HighSSIValue. SSI values that fall outside this range should not be used within the GDS. QLC.0100 53 WP2-119 The HighSSIValue value is set in the L2P configuration file maintained at the RDAC and GHRSST-PP International QLC.0120 Project Office. 53 P-ID2.1.6 L2P Aerosol Optical Depth (AOD) value assignment © 2004 SOC Page 143 of 193
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Medspiration â System Requirements Document - Data User Element

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Medspiration â System Requirements Document - Data User Element