Essential Climate Variables (ECV) are the key to understand climate-induced changes of the Earth. The Remote Sensing Research Group (led by PD Dr. Stefan Wunderle) contributes with their knowledge and experience in processing of satellite data (mainly NOAA- and MetOp-AVHRR) to these investigations. The analyzis of long-term ECVs (e.g. aerosol optical depth, albedo, snow extent, lake surface water temperature, fires, etc.) is based on our received and archived satellite data (1985 until today) covering Europe. All projects are performed in close cooperation with numerous national and international institutes as well as agencies