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 Data Meteosat Metop Tags ASCAT AVHRR SEVIRI NOAA Metop Europe MSG Date 2015 SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 19 and 20 November 2015 Polar low off the coast of northern Norway Two polar lows, which appeared off the coast of Norway, could be identified using ASCAT winds and satellite imagery.