[1] Max Planck Inst Chem, Atmospher Chem Div, POB 3060, D-55020 Mainz, Germany
[2] German Weather Serv, Hohenpeissenberg, Germany
[3] Johannes Gutenberg Univ Mainz, Inst Atmospher Phys, Mainz, Germany
[4] Johannes Gutenberg Univ Mainz, Dept Neurol, Mainz, Germany
[5] Dept Climate Air & Sustainabil, TNO, Utrecht, Netherlands
[6] Cent Univ Rajasthan, Dept Atmospher Sci, Ajmer, Rajasthan, India
[7] Forschungszentrum Julich, Inst Energy & Climate Res, Julich, Germany