Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Satellites Atmospheric Composition Weather Meteosat Tags Africa Europe Asia Meteosat Second Generation (MSG) SEVIRI SNPP VIIRS Date 2020 2015 2014 SHOW ALL Sort by Start Date Order Ascending Descending 3 results Case study 23 March 2020 04:00 UTC–27 March 18:00 UTC Aralkum Desert dust pollutes air in south-east Europe High values of particulate matter (PM10) were recorded in the air in many places across South-East Europe on 27 March 2020. Case study 10 February 2015 06:00 UTC–13 February 12:00 UTC Large sandstorm covers swathes of the Middle East A sandstorm, with winds reaching 100 km/h, caused widespread disruption across the Middle East in early February. Case study January–December 2015 Image Library top ten for 2015 A look at our most popular case studies from 2015.