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 Data Meteosat Metop Tags GOME-2 MSG IASI SEVIRI Metop-A Europe GOES Date 2008 Date August SHOW ALL Sort by Start Date Order Ascending Descending 1 result 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.