Institution: | aInstitute of Environmental Physics (IUP), University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany bInstitute of Space and Atmospheric Studies, University of Saskatchewan, 116 Science Place, Saskatoon, Canada S7N 5E2 cRemote Sensing Laboratories (RSL), University of Zurich, Winterthurer Str. 190, 8057 Zurich, Switzerland |