1. Institute for Marine and Atmospheric Research Utrecht; Utrecht University; Utrecht Netherlands
2. Department of Earth and Environmental Sciences; KU Leuven; Leuven Belgium
3. Department of Atmospheric and Oceanic Sciences; University of Colorado Boulder; Boulder Colorado USA
4. VITO Remote Sensing; Mol Belgium
5. Department of Geoscience and Remote Sensing; Delft University of Technology; Delft Netherlands
6. Department of Atmospheric and Oceanic Sciences; University of Wisconsin-Madison; Madison Wisconsin USA