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CMEMS Med-PHY updates Due to SST L4 satellite product correction 26 / Oct / 2021

CMEMS Med-PHY updates Due to SST L4 satellite

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Page 1: CMEMS Med-PHY updates Due to SST L4 satellite

CMEMS Med-PHY updatesDue to SST L4 satellite product correction

26 / Oct / 2021

Page 2: CMEMS Med-PHY updates Due to SST L4 satellite

SST SATELLITE NRT DATA ISSUE

● Issues in SST_MED_SST_L4_NRT_OBSERVATIONS_010_004 product were identified on March 2021 and reported to SST Med-PU responsibles

● SST_MED_SST_L4_NRT_OBSERVATIONS_010_004 producers were aware of the issue which was caused by a bug in S3B post-proc. The bug was fixed and the product substituted in May 2021.

● A numerical experiment has been run in the Mediterranean Sea using the corrected SST to check the impact of the SST product correction

SST satellite product issues during 24 Feb 2021

Analysed L4 SST SST error L3S sensor coverage

Differences between old and correct SST L4 data averaged in the Med Sea

Page 3: CMEMS Med-PHY updates Due to SST L4 satellite

MED-PHY VALIDATION

Validation of the Med-PHY System has been carried out evaluating the skill of the operational system forced with ”corrupted” SST satellite data and the one of an equivalent experiment forced with the corrected (new) SST data. The model outputs have been compared to the corrected SST data in the period 2019-2020 by means of:

● RMSD and Bias of SST averaged in the whole period (2019-2020) for the Mediterranean Sea and 16 sub-regions (slide 3-4)

● time-series of daily SST RMSD and Bias (slide 5)● time-series of weekly RMS misfits of Temperature, Salinity and Sea Level Anomaly (slide 6-7-8)

This validation shows a slight improvement of the surface temperature skill, but also a decreased temperature, salinity and sea level anomaly model misfits

Page 4: CMEMS Med-PHY updates Due to SST L4 satellite

SST EAN

SST RMSD: Validation wrt L4 SST corrected satellite data

Med-PHY forced with old SSTMed-PHY forced with corrected SST

Page 5: CMEMS Med-PHY updates Due to SST L4 satellite

SST EAN

SST BIAS: Validation wrt L4 SST satellite data

Med-PHY forced with old SSTMed-PHY forced with corrected SST

Page 6: CMEMS Med-PHY updates Due to SST L4 satellite

SST EAN: DAILY TIME SERIES

Med-PHY forced with old SSTMed-PHY forced with corrected SST

Page 7: CMEMS Med-PHY updates Due to SST L4 satellite

TEMPERATURE MISFIT

Med-PHY forced with old SSTMed-PHY forced with corrected SST

Page 8: CMEMS Med-PHY updates Due to SST L4 satellite

SALINITY MISFITS

Med-PHY forced with old SSTMed-PHY forced with corrected SST

Page 9: CMEMS Med-PHY updates Due to SST L4 satellite

SLA MISFITS

Med-PHY forced with old SSTMed-PHY forced with corrected SST