Prof Michael Tjernström

Address: Department of Meteorology, Stockholm University, SE-106 91 Stockholm, Sweden


Michael Tjernström is a professor at the Department of Meteorology, Stockholm University, specializing on small-scale atmospheric processes of importance for the Arctic climate. Examples of such processes are the formation of cloud, and how they affect solar and thermal radiation, and the turbulent exchange of energy and matter at the interface between the atmosphere and the sea-ice covered or open-water Arctic Ocean. Most of his work is based on interpretations of observations and he has lead four Arctic atmosphere research endeavors on the Swedish icebreaker Oden. Michael has published over 100 original research papers in scientific journals and often participate in media discussing issues on climate change, globally and in the Arctic.

Michael started his career as a Forecast Officer for the Swedish Airforce, but came back to academia after a few years and defended a thesis on computer modeling of low clouds and fog at Uppsala University in 1988. He obtained a position as Senior Lecturer and Associate Professor in 1994 and was promoted to professor at Uppsala University in 2000. At about the same he was appointed “Senior Scientist” by the Natural Research Council (NFR) and moved to Stockholm University. He has had a number of international and national assignments including as Chair for the “International Study of Arctic Change” and Director of the International Meteorological Institute and Chair for the Department of Meteorology, Stockholm University. He is currently the Swedish representative for the Atmospheric Working Group of the International Arctic Science Committee.


  • Sedlar, J., M. Tjernström, T. Mauritzen, M. Shupe, I. Brooks, P. Persson, C. Birch, C. Leck, A. Sirevaag, and M. Nicolaus, 2011: A transitioning Arctic surface energy budget: the impacts of solar zenith angle, surface albedo and cloud radiative forcing. Climate Dynamics, 37, 1643–1660, doi:10.1007/s00382-010-0937-5.
  • Mauritsen, T., J. Sedlar, M. Tjernström, C. Leck, M. Martin, M. Shupe, S. Sjogren, B. Sierau, P. O. G. Persson, I. M. Brooks, E. Swietlicki, 2011: An Arctic CCN-limited cloud-aerosol regime, Atmospheric Chemistry and Physics, 11, 165–173, doi:10.5194/acp-11-165-2011.
  • Tjernström, M., C. E. Birch, I. M. Brooks, M. D. Shupe, P. O. G. Persson, J. Sedlar, T. Mauritsen, C. Leck, J. Paatero, M. Szczodrak and C. R. Wheeler, 2012: Meteorological conditions in the Central Arctic summer during the arctic summer cloud ocean study (ASCOS), Atmospheric Chemistry and Physics, 12, 6863–6889, doi:10.5194/acp-12-6863-2012.
  • Kapsch, M-L, R.G. Graversen and MT, 2013: Springtime atmospheric transport controls Arctic summer sea ice. Nature Climate Change, 3,Pages: 744–748, doi: 10.1038/NCLIMATE1884.
  • Tjernström, M., and 43 co-authors, 2014: The Arctic Summer Cloud Ocean Study (ASCOS): Overview and experimental design, Atmospheric Chemistry and Physics, 14, 2823–2869, doi:10.5194/acp-14-2823-2014
  • Vihma, T., R. Pirazzini, I. A. Renfrew, J. Sedlar, M. Tjernström, T. Nygård, I. Fer, C. Lüpkes, D. Notz, J. Weiss, D. Marsan, B. Cheng, G. Birnbaum, S. Gerland, D. Chechin, and J. C. Gascard, 2014: Advances in understanding and parameterization of small-scale physical processes in the marine Arctic; A review. Atmospheric Chemistry and Physics, 14, 9403–9450, doi:10.5194/acp-14-9403-2014
  • Tjernström, M., M. D. Shupe, I. M. Brooks, P. O. G. Persson, J. Prytherch, D. Salisbury, J. Sedlar, P. Achtert, B. J. Brooks, P. E. Johnston, G. Sotiropoulou and D. Wolfe, 2015: Warm-air advection, air mass transformation and fog causes rapid ice melt, Geophysical Research Letters, 42, 5594–5602, doi:10.1002/2015GL064373.
  • Vihma, T., J. Screen, M. Tjernström, B. Newton, X. Zhang, V. Popova, C. Deser, M. Holland, and T. Prowse, 2015: The atmospheric role in the Arctic water cycle: processes, past and future changes, and their impacts, Journal of Geophysical Research, DOI:10.1002/2015JG003132.
  • Kapsch, M., R. Graversen, M. Tjernström, Richard Bintanja, 2016: The effect of downwelling longwave radiation on Arctic summer sea ice, Journal of Climate, 29, 1143 – 1159, DOI: 10.1175/JCLI-D-15-0238.1.
  • Sotiropoulou, G., M. Tjernström, J. Sedlar, P. Achtert, B. J. Brooks, I. M. Brooks, P. O. G. Persson, J. Prytherch, D. J. Salisbury, M. D. Shupe, P. E. Johnston, D. Wolfe, 2016: Arctic Cloud Summer Experiment (ACSE): Boundary layer and cloud characteristics over ice and open-water, during the melt and freeze-up seasons. Journal of Climate, doi: 10.1175/JCLI-D-16-0211.1.

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Last updated on 2017-16-06 at 11:14