Born      19 April 1966, Augsburg, Germany
Family    Married, two children

Prof. Bjorn Stevens is a director at the Max-Planck-Institute for Meteorology where he leads the Atmosphere in the Earth System Department and is a professor (§17) at the University of Hamburg. Prior to moving to Hamburg Dr. Stevens was a full professor of Dynamic Meteorology at the University of California of Los Angeles. He received a PhD in Atmospheric Science in 1996 from the Colorado State University in Ft Collins CO, and holds a Bachelor and Masters of Science in Electrical Engineering from Iowa State University.

Professor Stevens' research blends modeling, theory and field work to help articulate the role of aerosols, clouds and atmospheric convection in the climate system. He has made pioneering contributions to both understanding and modelling of mixing and microphysical processes and their impact on the structure and organization of clouds. Likewise his contribution to an understanding of how clouds respond to warming, and how radiative forcing responds to aerosol perturbations, has proven fundamental to our present comprehension of the susceptibility of Earth's climate to perturbations. In lay terms, his research has helped understand, and seeks to further understand, how clouds have changed, and will change, due to the presence of humans. 

Prof. Stevens served as a lead-author of Chapter 7, "Cloud and Aerosols" for the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. He co-leads the WCRP Grand Science Challenge on Clouds, Circulation and Climate Sensitivity and is the principal investigator for the HD(CP)2 project, High Definition Clouds and Precipitation for Climate Prediction, a large national project that is pioneering the development of a new generation of climate models which is supported by the Germany Ministry of Education and Research.

Prof. Stevens serves on a number of international advisory boards, has served as editor of leading journals in his field and has been honored by a number of awards, including the Clarence Leroy Meisinger Award of the American Meteorological Society, as well as fellowships from the Advanced Study Program of the National Center for Atmospheric Research, and the Alexander von Humboldt Society.