Senior Researcher, CICERO Center for International Climate Research

Professor at Washington University in Saint Louis

International Centre for Theoretical Physics (ICTP)

Distinguished Professor of Chemistry and Fellow of CIRES, University of Colorado-Boulder

NASA Goddard Space Flight Center (GSFC), AGU_Fellow, AMS_Fellow

Research Professor at CSIC, IDAEA, Spanish Research Council

Professor of Atmospheric Science, University of Exeter

Institut Pierre-Simon Laplace

McCollum/Corcoran Professor of Chemical Engineering and Environmental Science and …

Department of Earth and Atmospheric Sciences, Cornell University