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Reference ID | Document | D1 | CM SAF ATBD: Algorithm Theoretical Baseline Document - HOAPS version 4.0
DOI: 10.5676/EUM_SAF_CM/HOAPS/V002
ATBD_CMSAF_HOAPS_4.0 | D2 | ValRep: Validation Report SSM/I and SSMIS products - HOAPS version 4.0
DOI: 10.5676/EUM_SAF_CM/HOAPS/V002
ValRep_SSM/I_SSMIS_HOAPS_4.0 | D3 | ATBD: Algorithm Theoretical Baseline Document - Total Column Water Vapour
brokered from EUMETSAT CM SAF(1988-2014) & ICDR – C3S (2015-2020) from SSM/I & SSMIS measurements
C3S_D312b_Lot1.1.3.3-v1.1_202102_ATBD_TCWV_SSMIS_TCDR+ICDR_v1.1 | D4 | Product Quality Assurance Document - Total Column Water Vapour
brokered from EUMETSAT CM SAF(1988-2014) & ICDR – C3S (2015-2020) from SSM/I & SSMIS measurements
C3S_D312b_Lot1.2.3.8-v1.1_202102_PQAD_TCWV_SSMIS_TCDR+ICDR_v1.1 | D5 | Report on Updated KPIs.
Key Performance Indicators (KPIs) |
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Acronyms
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Acronym | Definition | AIRS | Atmospheric Infra-Red Sounder | CDR | Climate Data Record | CM SAF | Climate Monitoring Satellite Application Facility | COSMIC | Constellation Observing System for Meteorology, Ionosphere, and Climate | DMSP | Defense Meteorological Satellite Program | ECMWF | European Centre for Middle-range Weather Forecast | ERA | ECMWF Re-Analysis | HOAPS | Hamburg Ocean & Atmosphere fluxes and Parameters from Satellite data | ICDR | Interim Climate Data Record | IQR | Inter Quartile Range | NASA | National Aeronautics and Space Administration | RMSD | Root Mean Square of Differences | SSM/I | Special Sensor Microwave Imager | SSMIS | Special Sensor Microwave Imager Sounder | TCDR | Thematic Climate Data Record | TCWV | Total Column Water Vapour | TMI | TRMM Microwave Imager | TRMM | Tropical Rainfall Measurement Mission |
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The KPI test of ICDRs vs. TCDRs leads to similar conclusions. The ICDR differences relative to the RSS_SSMI and ERA-5 validation datasets stay in the expected range for TCDRs (Table 4). Only 5 out of 72 ICDRs show larger differences, which is expected from the 95% confidence interval. On the other hand, due to large drift between HOAPS 4.0 SSMI(S) and AIRS V7, the number of ICDR failures (K=30) exceeds the critical number of 7. Hence the ICDR differences between HOAPS & AIRS V7 do not fulfill the null hypothesis of similarity between ICDRs and TCDR. Further details can be found in the PQAD [D4] and Report on Updated KPI's [D5].
Table 4: Results of the hypothesis test upon the number of ICDRs falling outside the 95% confidence interval of the TCDR.
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