Acknowledgement

The ELS XV organizing committees are grateful for financial support from the European Space Administration ESA, from the European Meteorological Satellite Organisation EUMETSAT, from the German Aerospace Center DLR, and from the Leibniz Institute for Tropospheric Research TROPOS.
Elsevier provided several travel grants as well as comprehensive logistical and financial support in the selection and presentation of the Van de Hulst, Waterman, and Goody awards.