I have participated in 1 panel review for the Department of Energy. I have provided 2 expert reviews for two funding organisations: *) The Flemish Research Foundation (FWO) *) National Science Center, Poland (NCN) I have reviewed 5 papers this year, for the following journals: *) Atmospheric Chemistry and Physics (2) *) Journal of the Atmospheric Sciences (2) *) Geophysical Research Letters *) Solar Energy