Senior Researcher, CICERO Center for International Climate Research

Professor at Washington University in Saint Louis

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

International Centre for Theoretical Physics (ICTP)

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

Research Professor at CSIC, IDAEA, Spanish Research Council

Institut Pierre-Simon Laplace

Professor of Atmospheric Science, University of Exeter

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

Department of Earth and Atmospheric Sciences, Cornell University