CICERO - Center for International Climate Research

Phone: +47 22 00 47 65 /



PhD from the Department of Geosciences, UiO 2012

For a complete list of publications see: ResearcherID, ORCID, Google Scholar


  • AC/BC In search of airborne soot, and how it affects the climate
  • Bio4Clim Comparative climate impact assessment of the forest based bio-economies of Norway, Sweden and Finland
  • MOCA: Methane Emissions from the Arctic OCean to the Atmosphere The MOCA project will enhance understanding of the present atmospheric effects of methane released from dissociation of gas hydrates in Arctic seabed sediments, and will also inform on the future potential impacts in a warming climate on decadal to centennial timescales.
  • EVA - Earth system modelling of climate Variations in the Anthropocene EVA will provide a cutting-edge version of the Norwegian Earth system model NorESM for global climate assessments (CMIP6, IPCC AR6) including prognostic climate experiments and analyses of key importance for the national and international community
  • Impact of absorbing Aerosols on Radiative forcing in the European Arctic The climate impact of absorbing aerosols, such as black carbon particles originating from fossil fuel combustion or biomass burning, mineral dust and volcanic ash, is still very poorly understood especially its role in the atmosphere of polar regions.
  • Health effects of Hebei PM2.5 Action Plan As part of the preparation of a World Bank Program-for Results (PforR) operation on PM2.5 pollution in Hebei, the current report provides an economic evaluation of the health benefits that may be achieved from alternative scenarios for PM2.5 reductions in Hebei in 2017 and onwards. We also include a qualitative evaluation of other benefits, e.g., how the program may contribute to abating emissions of CO2 and short-lived climate forcers (SLCF).

Publications and outreach at CICERO

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Journal article


  • Wenche Aas, Augustin Mortier, Van C. Bowersox, Ribu Cherian, Greg Faluvegi, Hilde Fagerli, Jenny Hand, Zbigniew Klimont, Corinne Galy-Lacaux, Christopher M.B. Lehmann, Cathrine Lund Myhre, Gunnar Myhre, Dirk Jan Leo Oliviè, Keiichi Sato, Johannes Quaas, Pasumarthi Surya Prakasa Rao, M Schulz, Drew Shindell, Ragnhild Bieltvedt Skeie, Ariel Stein, Toshihiko Takemura, Svetlana G. Tsyro, Robert Vet, Xiaobin Xu, 2019 Global and regional trends of atmospheric sulfur Scientific Reports, EN






  • Ragnhild Bieltvedt Skeie, Terje K. Berntsen, Magne Aldrin, Marit Holden, Gunnar Myhre, 2014 A lower and more constrained estimate of climate sensitivity using updated observations and detailed radiative forcing time series Earth System Dynamics, Copernicus GmbH, EN
  • K Tsigaridis, N Daskalakis, M Kanakidou, Peter J. Adams, Paulo Artaxo, R Bahadur, Yves Balkanski, S. E. Bauer, Nicolas Bellouin, Anna Benedetti, Tommi Bergman, Terje K. Berntsen, J. P. Beukes, H Bian, K Carslaw, Mian Chin, G Curci, Thomas Diehl, Richard C. Easter, Steven John Ghan, SL Gong, A Hodzic, CR Hoyle, Trond Iversen, S Jathar, J. L. Jimenez, Johannes W. Kaiser, Alf Kirkevåg, D Koch, Harri Kokkola, Y.H. Lee, G Lin, X Liu, G Luo, X Ma, Graham W. Mann, N Mihalopoulos, J.J Morcrette, JF Muller, Gunnar Myhre, S Myriokefalitakis, NL Ng, D O'Donnell, J.E. Penner, L Pozzoli, Kirsty J. Pringle, LM Russell, M Schulz, J. Sciare, Øyvind Seland, Drew T. Shindell, Sanford Sillman, Ragnhild Bieltvedt Skeie, D Spracklen, T Stavrakou, S Steenrod, Toshihiko Takemura, P Tiitta, S Tilmes, Holger Tost, T Van Noije, P. G. van Zyl, Knut von Salzen, F. Yu, Z Wang, Z. Wang, Rahul A. Zaveri, H Zhang, K Zhang, Q Zhang, X Zhang, 2014 The AeroCom evaluation and intercomparison of organic aerosol in global models Atmospheric Chemistry and Physics, Copernicus, EN
  • Bjørn Hallvard Samset, Gunnar Myhre, Andreas Herber, Yutaka Kondo, Shao-Meng Li, Nobuhiro Moteki, Makoto Koike, Naga Oshima, Joshua P. Schwarz, Yves Balkanski, Susanne E. Bauer, Nicolas Bellouin, Terje K. Berntsen, Huisheng Bian, Mian Chin, Thomas Diehl, Richard C. Easter, Steven John Ghan, Trond Iversen, Alf Kirkevåg, Jean-François Lamarque, Guangxing Lin, Xiaohong Liu, Joyce E. Penner, M Schulz, Øyvind Seland, Ragnhild Bieltvedt Skeie, Philip Stier, Toshihiko Takemura, Kostas Tsigaridis, Kai Zhang, 2014 Modelled black carbon radiative forcing and atmospheric lifetime in AeroCom Phase II constrained by aircraft observations Atmospheric Chemistry and Physics, Copernicus, EN
  • C Jiao, M Flanner, Y Balkanski, S. Bauer, N Bellouin, Terje K. Berntsen, H Bian, K Carslaw, M Chin, N De Luca, T Diehl, S Ghan, Trond Iversen, A Kirkevag, D Koch, X Liu, G Mann, J Penner, G Pitari, M Schulz, Øyvind Seland, Ragnhild Bieltvedt Skeie, S Steenrod, P Stier, T Takemura, K Tsigaridis, T Van Noije, Y Yun, K Zhang, 2014 An aerocom assessment of black carbon in Arctic snow and sea ice Atmospheric Chemistry and Physics, Copernicus, EN
  • V. A. Dutkiewicz, A. M. DeJulio, T Ahmed, J Laing, P. K. Hopke, Ragnhild Bieltvedt Skeie, Y Viisanen, J. Paatero, Liaquat Husain, 2014 Forty-seven years of weekly atmospheric black carbon measurements in the Finnish Arctic: Decrease in black carbon with declining emissions Journal of Geophysical Research - Atmospheres, American Geophysical Union (AGU), EN







  • Jan S. Fuglestvedt, Terje K. Berntsen, Gunnar Myhre, Kristin Rypdal, Ragnhild Bieltvedt Skeie, 2008 Climate forcing from the transport sectors Proceedings of the National Academy of Sciences of the United States of America, EN