E-Mail IMAGE: Lidar measurement on Friday, 11.09.20, at TROPOS in Leipzig: The smoke cloud (yellow-red) moves over Leipzig from about 2 a.m. UTC (= 4 a.m. CEST) and decreases slightly during the... view more Credit: Holger Baars, TROPOS Leipzig. The smoke from the extreme forest fires on the US West Coast in September 2020 travelled over many thousands of kilometres to Central Europe, where it continued to affect the atmosphere for days afterwards. A comparison of ground and satellite measurements now shows: The forest fire aerosol disturbed the free troposphere over Leipzig in Ge...