Born 1952

Research  interests

Physical processes in the upper troposphere and lower stratosphere (UT/LS) of relevance for future climate, in particular microphysical investigations of polar stratospheric clouds, aerosols, and cirrus clouds in relation to stratospheric ozone depletion and transport of water vapour in the UT/LS. 


1981 M.Sc. Physics, astronomy, mathematics, University of Copenhagen

1993 Ph.D. Polar stratospheric clouds and aerosols, University of Copenhagen

Employment, duties

2015-        Danish Meteorological Institute, Danish Climate Center, Senior Consultant

2001-2014 Danish Meteorological Institute, Danish Climate Center, research leader

1993-2001 Danish Meteorological Institute, scientist, senior scientist

1989-1992 Danish Research Academy/Danish Meteorological Institute, PhD student 

1985-1989 Risoe National Laboratory, Dept. of Energy Techniques; Dept. of Informatics, scientist

1981-1985 Vestre Borgerdyd Gymnasium, Virum Statsskole, teacher of physics and mathematics

  • Member of the Steering Committee of the Network for the Detection of Atmospheric Composition Change (NDACC) 2001-.

  • Member of the COST-Earth System Science and Environmental Management Domain Committee 2004- .

  • Danish Ozone Research Manager in connection with the Vienna Convention for the protection of the ozone layer 2001-

  • Member of  the Steering Group for the EUMETSAT Ozone and Atmospheric Chemistry Satellite Application Facility, 2004-.

  • Co-chair of the Steering Group for  the EUMETSAT Radio Occultation for Meteorology Satellite Application Facility, 2012-

  • Member of the Arctic Monitoring and Assessment Programme’s (AMAP) climate expert group 2001-

  • Member  of the Danish National Committee for IGBP.

Work experience

Development of microphysical models for physical simulations of polar stratospheric clouds (PSC), cirrus, and aerosols and their influence on stratospheric ozone depletion. The models have been incorporated in 2D and 3D atmospheric chemistry models at the National Center for Atmospheric Research (USA), the universities of Cambridge (UK) and Oslo (Norway), Norwegian Institute for Air Research (NILU, Norway), Belgian Institute for Space Aeronomy (Belgium), NASA-Langley (USA), and Laboratoire de Physique et Chemie de l’Environment-CNRS (France), and has been provided for usage at the University of Nagoya (Japan), Instituto di Fisica dell’ Atmosfera-CNR (Italy), Max-Panck-Institut für Kernphysik, and Forschungszentrum Karlsruhe (Germany).

Participates in the EU-funded stratospheric ozone research campaigns EASOE (1991-92), SESAME (1994-95), THESEO (1998-99), VINTERSOL (2002-2004), HIBISCUS (2004), and SCOUT-AMMA (2006, 2008). Co-ordinator the EU-funded projects: In-situ analysis of aerosols and gases in the polar stratosphere: A contribution to the THESEO campaign” (1998-2000) and “Comprehensive investigations of polar stratospheric aerosols” (2000-2003). Balloon-borne measurements of ozone and investigations of chemical ozone depletion in the Arctic stratosphere. Balloon-borne measurements of volcanic aerosols, PSCs and cirrus from Thule, Scoresbysund, Sondre Stromfjord (Greenland), Kiruna (Sweden), Bauru, (Brazil), and Niamey (Niger) in collaboration with the universities of Wyoming and Rome, the Max-Planck Institut für Kernphysik (Heidelberg) and Service d’Aeronomie (Paris). Experimental verifications of microphysical PSC- and cirrus models, optical models for aerosol size distributions, and investigations on formation of PSC- and cirrus particles and their physical phase and composition. Projects supported by the European Commission, Commission for Scientific Research in Greenland, the Danish Space Board, and the Danish Natural Science Research Council. 

  • Co-author and reviewer of the Scientific Assessment on the Ozone Layer: 1998 and 2002, The UNEP/WMO Ozone Scientific Assessment for the Montreal Protocol.

  • Among the (leading) authors of the EU-Commission evaluation of European ozone research (European Research on the Stratosphere, 1996 and 2001).

  • Acts as scientific evaluator of stratospheric ozone research proposals of the EC 4th and 5th Framework programmes. 

  • Member of the THESEO-2000, VINTERSOL and the SCOUT-O3 campaign core groups the SCOUT-O3 Integrated Project Executive Committee.

  • Member of the European Commission’s Science Panel on Atmospheric Research 2003-2008.

  • Acted as referee at the following international scientific journals, technical reports, and research councils: Nature, Science, Journal of Geophysical Research; Geophysical Research Letters; Journal of Atmospheric Chemistry; Annales Geophysicae, Journal of Atmospheric and Oceanic Technology, Atmospheric Chemistry and Physics, IPCC, WMO/UNEP, NERC.

  • Participated in 17 EU-projects, coordinated 2 EU-projects.