Madushika Sewwandi Athukorala Arachchige^1,2, Qing Sun^2,3, Alban Planchat^1,2 and Charlotte Laufkotter^1,2, (1)University of Bern, Climate and Environmental Physics, Bern, Switzerland, (2)University of Bern, Oeschger Centre for Climate Change Research, Bern, Switzerland, (3)University of Bern, Wyss Academy for Nature, Bern, Switzerland