1. School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom
2. National Centre for Earth Observation, University of Leeds, Leeds LS2 9JT, United Kingdom
3. NASA Langley Research Center, Hampton, Virginia 23681, USA
4. Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, 82230 Wessling, Germany
5. Environment and Climate Change Canada, Toronto, Ontario M3H 5T4, Canada
6. Science Systems and Applications, Inc., Lanham, Maryland 20706, USA
7. LATMOS, Sorbonne Université, UVSQ, CNRS, 75005 Paris, France
8. Department of Geography and Planning, University of Toronto, Toronto, Ontario M5S 3G3, Canada
9. IEK-7, Forschungszentrum Jülich, 52425 Jülich, Germany
10. Cooperative Institute for Research in Environmental Sciences, CU Boulder, Boulder, Colorado 80309, USA
11. NOAA GML, Boulder, Colorado 80305, USA
12. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA
13. NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
14. University of Maryland Baltimore County, Baltimore, Maryland 21228, USA
15. Institut für Umweltphysik, University of Bremen, 28344 Bremen, Germany
16. Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom