The sea surface temperature (SST)

The sea surface temperature (SST) is based on analyses received daily from NCEP, Washington in a 0.5° x 0.5° grid. It is based on ship, buoy and satellite observations. In shallow waters where rapid changes due to upwelling can take place close to land the observed SST can sometimes differ as much as 5 deg from the NCEP analysis. The SST is kept constant over the integration.