Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Atmospheric Composition Land Ocean Weather Data Meteosat Metop Sentinel Tags Sentinel-3 Europe Asia ASCAT GOME-2 Meteosat Second Generation (MSG) OLCI SEVIRI SLSTR SRAL Meteosat Third Generation (MTG) Africa IASI NOAA Metop-A Metop-B EPS S America MODIS VIIRS ABI AHI Polar Date 2020 2018 2017 SHOW ALL Sort by Start Date Order Ascending Descending 3 results Case study Jan, Feb, March 2007-2020 Pollution levels drop during COVID-19 lockdown The COVID-19 lockdown in early 2020 had a visible effect on pollution. Case study January–December 2019 Image Library top ten for 2019 A look at our most popular case studies from 2019. Case study 2 March 2017, 28 April, 7 May, 16 July, 30 July, 11 August and 21 August 2018 Phytoplankton blooms spotted by Sentinel-3 Images of the variety of species of phytoplankton that bloom in the world’s oceans and lakes in 2017 & 2018.