Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Metop Satellites Atmospheric Composition Weather Data Meteosat Tags GOME-2 Meteosat Second Generation (MSG) IASI Metop-A SEVIRI Africa Metop-B Europe Asia GOES Date 2014 2008 SHOW ALL Sort by Start Date Order Ascending Descending 3 results Case study 1 April 02:56 UTC–2 April 2014 02:58 High air pollution in parts of Western Europe On 1 April GOME-2 instruments on Metop-A and -B observed elevated levels of NO2 total column concentration over parts of Europe. Case study 3 November 2008 18:00 UTC Large SO2 plume from Erta Ale volcano Large SO2 plume from Erta Ale crossed the Red Sea towards Yemen in Nov 2008. Case study 14 August 2008 00:00 UTC SO2 plumes from the Kasatochi eruption Sulphur dioxide (SO2) plumes from the Kasatochi eruption circled the whole northern hemisphere over more than 20 days.