Aerosol_cci, ESA Climate Change Initiative, #4000109874/14/I-NB, and EXPANSION, ESA Living Planet Fellowship, #4000116512/16/I-NB, and MIMOSA-5, Marie Curie Career Integration Grant, EU-FP7, Grant Agreement #293560, and AerGOM, ESA, Contract 22022/OP/I-OL, and Belgian Federal Science Policy (BELSPO)