CNR Mediterranean Sea High Resolution Diurnal Subskin Sea Surface Temperature Analysis: Validation subset

A subset of the MEDiterranean Diurnal Optimally Interpolated Sea Surface Temperature (MED DOISST) product  is provided here for validation purpose. The MED DOISST product has been developed by the Consiglio Nazionale delle Ricerche (CNR) in the framework of the Copernicus Monitoring Environment Marine Service (CMEMS) (https://doi.org/10.25423/CMCC/SST_MED_PHY_SUBSKIN_L4_NRT_010_036). It consists of daily optimally interpolated (Level-4) maps of hourly mean sub-skin SST over the Mediterranean Sea (January 2019-December 2020) provided over a regular grid at 1/16° horizontal resolution. The sub-skin SST L4 product is created by combining geostationary satellite observations aquired from SEVIRI and model data (used as first-guess) aquired from the CMEMS MED Monitoring Forecasting Center (MFC). The sub-skin SST is subject to potentially large diurnal cycle (the typical day-night SST oscillation), especially in the Mediterranean Sea where diurnal amplitudes can exceed 5 °C. This dataset is able to reproduce accurately the SST diurnal cycle, including extreme diurnal warming events.

The subset provides 24 hourly mean maps of sub-skin SST for each day (from 1st January 2019 to 31st December 2020) centered at 00:00, 01:00, 02:00,…, 23:00 UTC. This subset can be used for validation with independent SST estimates from SVP drifters.