Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Weather Satellites Meteosat Tags Meteosat Third Generation (MTG) Asia Himawari MODIS Terra/Aqua SNPP VIIRS AHI Date 2016 SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 19 March 2016 00:00–09:00 UTC and 22 April 05:42 UTC Frozen Lake Baikal Lake Baikal, the world's oldest and deepest freshwater lake, was still almost completely frozen in Spring 2016.