Bjørn Hallvard Samset

Projects

• AC/BC In search of airborne soot, and how it affects the climate
• The NetBC project Black carbon: A challenging piece of the climate puzzle
• NAPEX Precipitation is arguably the most direct link between the climate and human society. We depend upon existing precipitation patterns for fresh water and food production, and global infrastructure is designed to withstand current precipitation extremes.
• 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.
  
• ICOS-Norge Integrated Carbon Observation System (ICOS)-Norway and Ocean Thematic Centre (OTC)
• SUPER - SUb-daily Precipitation Extremes in highly-populated Regions The main objective of SUPER is to quantify the influence of anthropogenic activity on sub-daily extreme precipitation in highly populated regions
• Sensible heat has significantly affected the global hydrological cycle over the historical period Multiple lines of evidence indicate widespread changes to the global water cycle since 1950. Here we show, using a range of climate modelling results, that changes in sensible heat are the dominant contributor to the present global-mean precipitation change since preindustrial time.

Publications and outreach at CICERO

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Journal article

2018

• Bjørn Hallvard Samset, Camilla Weum Stjern, Elisabeth Andrews, Ralph A. Kahn, Gunnar Myhre, M Schulz, Gregory L. Schuster, 2018 Aerosol Absorption: Progress Towards Global and Regional Constraints Current Climate Change Reports, EN
• L. Liu, Dilshad Shawki, Apostolos Voulgarakis, Matthew Kasoar, Bjørn Hallvard Samset, Gunnar Myhre, Piers M. Forster, Øivind Hodnebrog, Jana Sillmann, Siv Gundrosen Aalbergsjø, Olivier Boucher, Gregory S. Faluvegi, Trond Iversen, Alf Kirkevåg, Jean-François Lamarque, Dirk Jan Leo Oliviè, Thomas Benjamin Richardson, Drew Shindell, Toshihiko Takemura, 2018 A PDRMIP Multimodel study on the impacts of regional aerosol forcings on global and regional precipitation Journal of Climate, American Meteorological Society, EN
• Thomas Benjamin Richardson, Piers M. Forster, Timothy Andrews, Olivier Boucher, Gregory S. Faluvegi, Dagmar Fläschner, Matthew Kasoar, Alf Kirkevåg, Jean-François Lamarque, Gunnar Myhre, Dirk Jan Leo Oliviè, Bjørn Hallvard Samset, Dilshad Shawki, Drew Shindell, Toshihiko Takemura, Apostolos Voulgarakis, 2018 Carbon Dioxide Physiological Forcing Dominates Projected Eastern Amazonian Drying Geophysical Research Letters, American Geophysical Union, EN
• Gunnar Myhre, Bjørn Hallvard Samset, Øivind Hodnebrog, Timothy Andrews, Olivier Boucher, Gregory S. Faluvegi, Dagmar Fläschner, Piers M. Forster, Matthew Kasoar, Viatcheslav V. Kharin, Alf Kirkevåg, Jean-François Lamarque, Dirk Jan Leo Oliviè, Thomas Benjamin Richardson, Dilshad Shawki, Drew Shindell, Keith P. Shine, Camilla Weum Stjern, Toshihiko Takemura, Apostolos Voulgarakis, 2018 Sensible heat has significantly affected the global hydrological cycle over the historical period Nature Communications, EN
• Rong Wang, Elisabeth Andrews, Yves Balkanski, Olivier Boucher, Gunnar Myhre, Bjørn Hallvard Samset, M Schulz, Gregory L. Schuster, Myrto Valari, Shu Tao, 2018 Spatial Representativeness Error in the Ground-Level Observation Networks for Black Carbon Radiation Absorption Geophysical Research Letters, American Geophysical Union, EN

2017

• Gunnar Myhre, Wenche Aas, Ribu Cherian, W Collins, Greg Faluvegi, M. Flanner, Piers Forster, Øivind Hodnebrog, Zbigniew Klimont, Marianne Tronstad Lund, Johannes Mulmenstädt, Cathrine Lund Myhre, Dirk Jan Leo Oliviè, Michael J. Prather, Johannes Quaas, Bjørn Hallvard Samset, Jordan Schnell, M Schulz, Drew Shindell, Ragnhild Bieltvedt Skeie, Toshihiko Takemura, Svetlana G. Tsyro, 2017 Multi-model simulations of aerosol and ozone radiative forcing due to anthropogenic emission changes during the period 1990-2015 Atmospheric Chemistry and Physics, Copernicus, EN
• Gunnar Myhre, Piers M. Forster, Bjørn Hallvard Samset, Øivind Hodnebrog, Jana Sillmann, Siv Gundrosen Aalbergsjø, Timothy Andrews, Olivier Boucher, G. Fulavegi, Dagmar Fläschner, Trond Iversen, Matthew Kasoar, V Kharin, Alf Kirkevåg, Jean-Francois Lamarque, Dirk Jan Leo Oliviè, Thomas Benjamin Richardson, Drew Shindell, Keith P. Shine, Camilla Weum Stjern, Toshihiko Takemura, Apostolos Voulgarakis, Francis W. Zwiers, 2017 PDRMIP: A precipitation driver and response model intercomparison project-protocol and preliminary results Bulletin of The American Meteorological Society - (BAMS), American Meteorological Society, EN
• Joshua P. Schwarz, Bernadett Weinzierl, Bjørn Hallvard Samset, Maximilian Dollner, Katharina Heimerl, Milos Z. Markovic, Anne E Perring, Luke Ziemba, 2017 Aircraft measurements of black carbon vertical profiles show upper tropospheric variability and stability Geophysical Research Letters, American Geophysical Union, EN
• Marianne Tronstad Lund, Terje K. Berntsen, Bjørn Hallvard Samset, 2017 Sensitivity of black carbon concentrations and climate impact to aging and scavenging in OsloCTM2-M7 Atmospheric Chemistry and Physics, Copernicus, EN
• E. Andrews, John A. Ogren, Stefan Kinne, Bjørn Hallvard Samset, 2017 Comparison of AOD, AAOD and column single scattering albedo from AERONET retrievals and in situ profiling measurements Atmospheric Chemistry and Physics, Copernicus, EN
• Maria Sand, Bjørn Hallvard Samset, Yves Balkanski, Susanne Bauer, Nicolas Bellouin, Terje K. Berntsen, Huisheng Bian, Mian Chin, Thomas Diehl, Richard Easter, Steve J. Ghan, Trond Iversen, Alf Kirkevåg, Jean-Francois Lamarque, Guangxing Lin, Xiaohong Liu, Gan Luo, Gunnar Myhre, Twan P.C. Van Noije, Joyce E. Penner, M Schulz, Øyvind Seland, Ragnhild Bieltvedt Skeie, Philip Stier, Toshihiko Takemura, Kostas Tsigaridis, Fangqun Yu, Kai Zhang, Hua Zhang, 2017 Aerosols at the poles: an AeroCom Phase II multi-model evaluation Atmospheric Chemistry and Physics, Copernicus, EN
• Camilla Weum Stjern, Bjørn Hallvard Samset, Gunnar Myhre, Piers M. Forster, Øivind Hodnebrog, Timothy Andrews, Olivier Boucher, Gregory S. Faluvegi, Trond Iversen, Matthew Kasoar, Viatcheslav V. Kharin, Alf Kirkevåg, Jean-Francois Lamarque, Dirk Jan Leo Oliviè, Thomas Benjamin Richardson, Dilshad Shawki, Drew Shindell, Christopher J. Smith, Toshihiko Takemura, Apostolos Voulgarakis, 2017 Rapid Adjustments Cause Weak Surface Temperature Response to Increased Black Carbon Concentrations Journal of Geophysical Research - Atmospheres, American Geophysical Union (AGU), EN

2016

• Bjørn Hallvard Samset, Gunnar Myhre, Piers M. Forster, Øivind Hodnebrog, Timothy Andrews, Gregory S. Faluvegi, Dagmar Fläschner, Matthew Kasoar, Viatcheslav V. Kharin, Alf Kirkevåg, Jean-François Lamarque, Dirk Jan Leo Oliviè, Thomas Benjamin Richardson, Drew T. Shindell, Keith P. Shine, Toshihiko Takemura, Apostolos Voulgarakis, 2016 Fast and slow precipitation responses to individual climate forcers: A PDRMIP multimodel study Geophysical Research Letters, American Geophysical Union, EN
• Nicolas Bellouin, Laura Baker, Øivind Hodnebrog, Dirk Jan Leo Oliviè, Ribu Cherian, Claire Macintosh, Bjørn Hallvard Samset, Anna Esteve, Borgar Aamaas, Johannes Quaas, Gunnar Myhre, 2016 Regional and seasonal radiative forcing by perturbations to aerosol and ozone precursor emissions Atmospheric Chemistry and Physics, Copernicus, EN
• Piers M. Forster, T. Richardson, A. C. Maycock, C. J. Smith, Bjørn Hallvard Samset, Gunnar Myhre, T. Andrews, R. Pincus, M Schulz, 2016 Recommendations for diagnosing effective radiative forcing from climate models for CMIP6 Journal of Geophysical Research - Atmospheres, American Geophysical Union (AGU), EN
• Piers M. Forster, Thomas Richardson, Amanda C. Maycock, Christopher J. Smith, Bjørn Hallvard Samset, Gunnar Myhre, Timothy Andrews, Robert Pincus, M Schulz, 2016 Recommendations for diagnosing effective radiative forcing from climate models for CMIP6 Journal of Geophysical Research - Atmospheres, American Geophysical Union (AGU), EN
• Camilla Weum Stjern, Bjørn Hallvard Samset, Gunnar Myhre, Huisheng Bian, Mian Chin, Yanko Davila, Frank Dentener, Louisa Emmons, Johannes Flemming, Amund Søvde Haslerud, Daven Henze, Jan Eiof Jonson, Tom Kucsera, Marianne Tronstad Lund, M Schulz, Kengo Sudo, Toshihiko Takemura, Simone Tilmes, 2016 Global and regional radiative forcing from 20 % reductions in BC, OC and SO4 - An HTAP2 multi-model study Atmospheric Chemistry and Physics, Copernicus, EN
• Solveig Glomsrød, Taoyuan Wei, Borgar Aamaas, Marianne Tronstad Lund, Bjørn Hallvard Samset, 2016 A warmer policy for a colder climate: Can China both reduce poverty and cap carbon emissions? Science of the Total Environment, Elsevier Science, EN
• Olivier Boucher, Yves Balkanski, Øivind Hodnebrog, Cathrine Lund Myhre, Gunnar Myhre, Johannes Quaas, Bjørn Hallvard Samset, Nick Schutgens, Philip Stier, Rong Wang, 2016 Jury is still out on the radiative forcing by black carbon. Proceedings of the National Academy of Sciences of the United States of America, EN
• Øivind Hodnebrog, Gunnar Myhre, Piers M. Forster, Jana Sillmann, Bjørn Hallvard Samset, 2016 Local biomass burning is a dominant cause of the observed precipitation reduction in southern Africa Nature Communications, EN
• Solveig Glomsrød, Taoyuan Wei, Borgar Aamaas, Marianne Tronstad Lund, Bjørn Hallvard Samset, 2016 A warmer policy for a colder climate: Can China both reduce poverty and cap carbon emissions? Science of the Total Environment, Elsevier Science, EN

2015

• Gunnar Myhre, Bjørn Hallvard Samset, 2015 Standard climate models radiation codes underestimate black carbon radiative forcing Atmospheric Chemistry and Physics, Copernicus, EN
• Bjørn Hallvard Samset, Gunnar Myhre, 2015 Climate response to externally mixed black carbon as a function of altitude Journal of Geophysical Research - Biogeosciences, American Geophysical Union (AGU), EN
• Andreas Stohl, Borgar Aamaas, M Amann, LH Baker, N Bellouin, Terje K. Berntsen, O Boucher, R Cherian, W Collins, N Daskalakis, Maria Dusinska, Sabine Eckhardt, Jan S. Fuglestvedt, Mikael Harju, C Heyes, Øivind Hodnebrog, J Hao, U Im, M Kanakidou, Z Klimont, K Kupiainen, KS Law, Marianne Tronstad Lund, R Maas, CR MacIntosh, Gunnar Myhre, S Myriokefalitakis, Dirk Jan Leo Oliviè, J Quaas, B Quennehen, JC Raut, ST Rumbold, Bjørn Hallvard Samset, M Schulz, Øyvind Seland, Keith P. Shine, Ragnhild Bieltvedt Skeie, Shuxiao Wang, Karl Espen Yttri, T Zhu, 2015 Evaluating the climate and air quality impacts of short-lived pollutants Atmospheric Chemistry and Physics, Copernicus, EN

2014

• Solveig Glomsrød, Taoyuan Wei, Torben Kenea Mideksa, Bjørn Hallvard Samset, 2014 Energy market impacts of nuclear power phase-out policies Mitigation and Adaptation Strategies for Global Change, Springer Netherlands, 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
• Øivind Hodnebrog, Gunnar Myhre, Bjørn Hallvard Samset, 2014 How shorter black carbon lifetime alters its climate effect Nature Communications, EN
• Marianne Tronstad Lund, Terje K. Berntsen, Chris Heyes, Zbigniew Klimont, Bjørn Hallvard Samset, 2014 Global and regional climate impacts of black carbon and co-emitted species from the on-road diesel sector Atmospheric Environment, EN
• Jan S. Fuglestvedt, Jan S. Fuglestvedt, Stig Bjørløw Dalsøren, Bjørn Hallvard Samset, Terje K. Berntsen, Gunnar Myhre, Øivind Hodnebrog, Magnus Strandmyr Eide, Trond Flisnes Bergh, 2014 Climate penalty for shifting shipping to the Arctic Environmental Science and Technology, EN
• Jan S. Fuglestvedt, Jan S. Fuglestvedt, Bjørn Hallvard Samset, Keith P Shine, 2014 Counteracting the climate effects of volcanic eruptions using short-lived greenhouse gases Geophysical Research Letters, American Geophysical Union, EN
• Bjørn Hallvard Samset, Gunnar Myhre, M Schulz, 2014 Upward adjustment needed for aerosol radiative forcing uncertainty Nature Climate Change, EN

2013

• Joshua P. Schwarz, Bjørn Hallvard Samset, A. Perring, J. Ryan Spackman, R. Gao, P. Stier, M Schulz, F. Moore, E. Ray, D. Fahey, 2013 Global-scale seasonally resolved black carbon vertical profiles over the Pacific Geophysical Research Letters, American Geophysical Union, EN
• Magnus Strandmyr Eide, Stig Bjørløw Dalsøren, Øyvind Endresen, Bjørn Hallvard Samset, Gunnar Myhre, Jan S. Fuglestvedt, Jan S. Fuglestvedt, Terje K. Berntsen, 2013 Reducing CO₂ from shipping - do non-CO₂ effects matter? Atmospheric Chemistry and Physics, Copernicus, EN
• Maria Malene Kvalevåg, Bjørn Hallvard Samset, Gunnar Myhre, 2013 Hydrological sensitivity to greenhouse gases and aerosols in a global climate model Geophysical Research Letters, American Geophysical Union, EN
• P. Stier, N.A.J. Schutgens, N. Bellouin, H. Bian, O. Boucher, M. Chin, S. Ghan, N. Huneeus, S. Kinne, G. Lin, X. Ma, Gunnar Myhre, J.E. Penner, C.A. Randles, Bjørn Hallvard Samset, M Schulz, T. Takemura, F. Yu, H. Yu, C. Zhou, 2013 Host model uncertainties in aerosol radiative forcing estimates: results from the AeroCom Prescribed intercomparison study Atmospheric Chemistry and Physics, Copernicus, EN
• Bjørn Hallvard Samset, Gunnar Myhre, M Schulz, Y. Balkanski, S. Bauer, Terje K. Berntsen, H. Bian, N. Bellouin, T. Diehl, R.C. Easter, S.J. Ghan, Trond Iversen, S. Kinne, Alf Kirkevåg, J.-F. Lamarque, G. Lin, X. Liu, J.E. Penner, Øyvind Seland, Ragnhild Bieltvedt Skeie, P. Stier, T. Takemura, K. Tsigaridis, K. Zhang, 2013 Black carbon vertical profiles strongly affect its radiative forcing uncertainty Atmospheric Chemistry and Physics, Copernicus, EN
• Gunnar Myhre, Bjørn Hallvard Samset, M Schulz, Y. Balkanski, S. Bauer, Terje K. Berntsen, H. Bian, N Bellouin, M Chin, T Diehl, R. C. Easter, J Feichter, SJ Ghan, D Hauglustaine, Trond Iversen, S Kinne, Alf Kirkevåg, J. F. Lamarque, G Lin, X. Liu, Marianne Tronstad Lund, G Luo, X Ma, T van Noije, JE Penner, P. J. Rasch, A. Ruiz, Øyvind Seland, Ragnhild Bieltvedt Skeie, P Stier, T. Takemura, K Tsigaridis, P. Wang, Z Wang, L. Xu, H Yu, F. Yu, J.-H. Yoon, K. Zhang, H. Zhang, C. Zhou, 2013 Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations Atmospheric Chemistry and Physics, Copernicus, EN
• Stig Bjørløw Dalsøren, Bjørn Hallvard Samset, Gunnar Myhre, James J. Corbett, Ray Minjares, Daniel Lack, Jan S. Fuglestvedt, Jan S. Fuglestvedt, 2013 Environmental impacts of shipping in 2030 with a particular focus on the Arctic region Atmospheric Chemistry and Physics, Copernicus, EN

2012

• Karianne Ødemark, Stig Bjørløw Dalsøren, Bjørn Hallvard Samset, Terje K. Berntsen, Jan S. Fuglestvedt, Jan S. Fuglestvedt, Gunnar Myhre, 2012 Short-lived climate forcers from current shipping and petroleum activities in the Arctic Atmospheric Chemistry and Physics, Copernicus, EN

2011

• Jon Kerr Nilsen, Bjørn Hallvard Samset, 2011 Parallel Monte Carlo simulations on an ARC-enabled computing grid Journal of Physics, Conference Series, IOP Publishing, EN
• Bjørn Hallvard Samset, Gunnar Myhre, 2011 Vertical dependence of black carbon, sulphate and biomass burning aerosol radiative forcing Geophysical Research Letters, American Geophysical Union, EN