Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Filter by Categories Satellites Ocean Data Metop Sentinel Tags ASCAT OLCI SLSTR Sea Surface Temperature (SST) ABI Ocean Colour Date 2020 1 result Sort by Start Date Order Ascending Descending Sort Wednesday, 16 December 2020 1 December 2020 00:00 UTC-3 December 16:24 UTC EUMETSAT Science Blog Upwelling in the Gulf of Tehuantepec Regional topography and winds drive a strong upwelling of cold ocean waters and an increase in phytoplankton growth in the Gulf of Tehuantepec.