Professor (Chair Title "Physics of the Oceans and the Atmosphere") Faculty of Physics and Electrical Engineering, University of Bremen, Deutschland

Distinguished Professor, School of Earth,Ocean and Environment,Department of Biological Sciences,University of South Carolina, USA

Professor of Earth System Science Programme, AXA;
Professor of Department of Geography and Resource Management;
Director, Institute of Environment, Energy and Sustainability ,The Chinese University of Hong Kong

Professor Emeritus, Institute for Catastrophic Loss Reduction at Western University’s Department of Geography.

Served as Executive Director for Global Change System for Analysis, Research and Training (START)

Professor, Climate Science Research Laboratory, Research Center for Advanced Science and Technology,The University of Tokyo, Japan

Distinguished professor, Distinguished Chair in Atmospheric Chemistry, Dept. of Chemistry and Biochemistry, Scripps Institution of Oceanography, USA

Distinguished Professor, Department of Marine Sciences, Texas A&M University, USA

Akira Yamaguchi Professor of Environmental Health and Human Habitation, Dept. of Environmental Health, School of Public Health, Howard University, USA

Professor/ Director of the Institute for Energy and Climate Research IEK-8: Troposphere,Germany

Professor Emeritus, Department of Atmospheric Sciences, University of Washington, USA