Fil Kand, Lund (Sweden) University, 1964. Doctor of Philosophy, Stockholm University, 1972.
Senior lecturer, U. Nairobi, Kenya, 1972-1975; research assistant, Stockholm U., 1965-1969; senior lecturer chemical meteorology, Stockholm U., 1969-1972; associate professor, Stockholm U., 1975-1979; professor, Stockholm U., since 1980; department chairman meteorology, Stockholm U., 1979-1981, 88-90; dean Faculty Sciences, Stockholm U., 1990-1996. President International Commision on Atmospheric Chemistry and Global Pollution,1990-. Member science committee International Geosphere-Biosphere Program, since 1997.
Member Royal Swedish Academy of Sciences (chairman environmental committee since 1997).
Married Karin Belfrage, June 12, 1964. Children: Håkan, Jonas, Amina, Rasmus.