Chief of Division, World Climate Program, World Meteorological Organization since 1986. Director of Climatology, Bureau(s) of Climatology, Swedish Meteorological & Hydrological Institute. Assistant Professor of Meteorology, Department of Meteorology, University of Stockholm.
Assistant Professor of Atmospheric Science, Department of Atmospheric Science(s), Oregon State University, United States of America. Rch Assistant, Department of Meteorology & Oceanography, University of Michigan, United States of America.