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 Ocean Weather Data Meteosat Sentinel Tags Europe Asia MSG OLCI SEVIRI Sentinel-3 Polar Date 2017 Date January March SHOW ALL Sort by Start Date Order Ascending Descending 2 results 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 Variety of species of phytoplankton that bloom in oceans and lakes in 2017 & 2018. Case study 1 February 2017 00:00 UTC–2 February 12:00 UTC Colour-changing dust cloud vortex Dust in northern Iraq shows different colours before and after circulation.