Camilla Weum Stjern

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
• 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.
• GREAT How do gases and particles affect turbulence in the lower atmosphere?
• CATHY Emissions of Asian Anthropogenic Aerosols (A3) are rapidly changing - most notably black carbon and sulphate aerosol precursors from India and China. The resulting range of climate impacts and societal hazards may dominate regionally over greenhouse gas induced trends for the next several decades, but the implications are as yet insufficiently explored. CATHY (Climate implications of rapid changes in Asian Anthropogenic Aerosol emissions: Temperature, Hydrological cycle and variabilitY) tackles the urgent need for quantifying climate related hazards resulting from ongoing and projected changes in A3 emissions.

Publications and outreach at CICERO

Gå til: Journal article

Journal article

2021

• Maria Sand, Bjørn Hallvard Samset, Gunnar Myhre, Jonas Gliss, Susanne E. Bauer, Huisheng Bian, Mian Chin, Ramiro Checa-Garcia, Paul Ginoux, Zak Kipling, Alf Kirkevåg, Harri Kokkola, Philippe Le Sager, Marianne Tronstad Lund, Hitoshi Matsui, Twan Van Noije, Dirk Jan Leo Oliviè, Samuel Rémy, M Schulz, Philip Stier, Camilla Weum Stjern, Toshihiko Takemura, Kostas Tsigaridis, Svetlana G. Tsyro, Duncan Watson-Parris, 2021 Aerosol absorption in global models from AeroCom phase III Atmospheric Chemistry and Physics (ACP), Copernicus GmbH, EN

2020

• Anne Sophie Daloz, Marian Mateling, Tristan L'Ecuyer, Mark Kulie, Norman B. Wood, Mikael Durand, Melissa Wrzesien, Camilla Weum Stjern, Ashok P. Dimri, 2020 How much snow falls in the world's mountains? A first look at mountain snowfall estimates in A-train observations and reanalyses The Cryosphere, Copernicus Publications under license by EGU – European Geosciences Union GmbH, EN
• Tao Tang, Drew Shindell, Yuqiang Zhang, Apostolos Voulgarakis, Jean-Francois Lamarque, Gunnar Myhre, Camilla Weum Stjern, Greg Faluvegi, Bjørn Hallvard Samset, 2020 Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature Atmospheric Chemistry and Physics (ACP), Copernicus GmbH, EN
• Zachary McGraw, Trude Storelvmo, Bjørn Hallvard Samset, Camilla Weum Stjern, 2020 Global radiative impacts of black carbon acting as ice nucleating particles Geophysical Research Letters, EN
• Marianne Tronstad Lund, Borgar Aamaas, Camilla Weum Stjern, Zbigniew Klimont, Terje Koren Berntsen, Bjørn Hallvard Samset, 2020 A continued role of short-lived climate forcers under the Shared Socioeconomic Pathways Earth System Dynamics, Copernicus GmbH, EN
• Camilla Weum Stjern, Bjørn Hallvard Samset, Olivier Boucher, Trond Iversen, Jean-Francois Lamarque, Gunnar Myhre, Drew Shindell, Toshihiko Takemura, 2020 How aerosols and greenhouse gases influence the diurnal temperature range Atmospheric Chemistry and Physics (ACP), Copernicus GmbH, EN

2019

• Tao Tang, D Shindell, G. Faluvegi, Gunnar Myhre, Dirk Jan Leo Oliviè, A. Voulgarakis, Matthew Kasoar, T. Andrews, O. Boucher, Piers M. Forster, Øivind Hodnebrog, Trond Iversen, Alf Kirkevåg, Jean-François Lamarque, T. Richardson, Bjørn Hallvard Samset, Camilla Weum Stjern, Toshihiko Takemura, C. Smith, 2019 Comparison of Effective Radiative Forcing Calculations Using Multiple Methods, Drivers, and Models Journal of Geophysical Research (JGR): Space Physics, EN
• Gunnar Myhre, Kari Alterskjær, Camilla Weum Stjern, Øivind Hodnebrog, Louis Marelle-Sebrechts, Bjørn Hallvard Samset, Jana Sillmann, Nathalie Schaller, Erich Fischer, M Schulz, Andreas Stohl, 2019 Frequency of extreme precipitation increases extensively with event rareness under global warming Scientific Reports, Nature Portfolio, EN
• Jana Sillmann, Camilla Weum Stjern, Gunnar Myhre, Bjørn Hallvard Samset, Øivind Hodnebrog, Timothy Andrews, Oliviér Boucher, Gregory Faluvegi, Piers Forster, Matthew R. Kasoar, Viatcheslav V. Kharin, Alf Kirkevåg, Jean-Francois Lamarque, Dirk Jan Leo Oliviè, Thomas B. Richardson, Drew Shindell, Toshihiko Takemura, Apostolos Voulgarakis, Francis W. Zwiers, 2019 Extreme wet and dry conditions affected differently by greenhouse gases and aerosols npj Climate and Atmospheric Science, Nature Portfolio, EN
• Bjørn Hallvard Samset, Camilla Weum Stjern, Marianne Tronstad Lund, Christian Wilhelm Mohr, Maria Sand, Anne Sophie Daloz, 2019 How daily temperature and precipitation distributions evolve with global surface temperature Earth's Future, EN
• Gunnar Myhre, Kari Alterskjær, Camilla Weum Stjern, Øivind Hodnebrog, Louis Marelle-Sebrechts, Bjørn Hallvard Samset, Jana Sillmann, Nathalie Schaller, Erich Fischer, M Schulz, Andreas Stohl, 2019 Frequency of extreme precipitation increases extensively with event rareness under global warming Scientific Reports, Nature Portfolio, EN
• Camilla Weum Stjern, Marianne Tronstad Lund, Bjørn Hallvard Samset, Gunnar Myhre, Piers M. Forster, Timothy Andrews, Olivier Boucher, Gregory Faluvegi, Dagmar Fläschner, Trond Iversen, Matthew Kasoar, Viatcheslav Kharin, Alf Kirkevåg, Jean-François Lamarque, Dirk Jan Leo Oliviè, Thomas Richardson, Maria Sand, Dilshad Shawki, Drew Shindell, Christopher J. Smith, Toshihiko Takemura, Apostolos Voulgarakis, 2019 Arctic Amplification Response to Individual Climate Drivers Journal of Geophysical Research (JGR): Space Physics, EN

2018

• Gunnar Myhre, Ryan J. Kramer, Christopher J. Smith, Øivind Hodnebrog, Piers M. Forster, Brian J. Soden, Bjørn Hallvard Samset, Camilla Weum Stjern, Timothy Andrews, Oliviér Boucher, Gregory S. Faluvegi, Dagmar Fläschner, Matthew Kasoar, Alf Kirkevåg, Jean-François Lamarque, Dirk Jan Leo Oliviè, Thomas Richardson, Drew T. Shindell, Philip Stier, Toshihiko Takemura, Apostolos Voulgarakis, Duncan Watson-Parris, 2018 Quantifying the importance of rapid adjustments for global precipitation changes Geophysical Research Letters, EN
• Tao Tang, Drew Shindell, Bjørn Hallvard Samset, Olivier Boucher, Piers M. Forster, Øivind Hodnebrog, Gunnar Myhre, Jana Sillmann, Apostolos Voulgarakis, Timothy Andrews, Gregory S. Faluvegi, Dagmar Fläschner, Trond Iversen, Matthew Kasoar, Viatcheslav Kharin, Alf Kirkevåg, Jean-Francois Lamarque, Dirk Jan Leo Oliviè, Thomas Richardson, Camilla Weum Stjern, Toshihiko Takemura, 2018 Dynamical response of Mediterranean precipitation to greenhouse gases and aerosols Atmospheric Chemistry and Physics (ACP), Copernicus GmbH, EN
• 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
• 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, Nature Portfolio, EN
• Camilla Weum Stjern, Helene Østlie Muri, Lars Ahlm, Olivier Boucher, Jason N.S. Cole, Duoying Ji, Andy Jones, Jim M. Haywood, Ben Kravitz, Andrew Lenton, John C. Moore, Ulrike Niemeier, Steven J. Phipps, Hauke Schmidt, Shingo Watanabe, Jon Egill Kristjansson, 2018 Response to marine cloud brightening in a multi-model ensemble Atmospheric Chemistry and Physics (ACP), Copernicus GmbH, EN

2017

• 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), 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 (JGR): Atmospheres, EN
• Lars Ahlm, Andy Jones, Camilla Weum Stjern, Helene Østlie Muri, Ben Kravitz, Jon Egill Kristjansson, 2017 Marine cloud brightening – as effective without clouds Atmospheric Chemistry and Physics (ACP), Copernicus GmbH, EN
• Lars Ahlm, Andy Jones, Camilla Weum Stjern, Helene Østlie Muri, Ben Kravitz, Jon Egill Kristjansson, 2017 Marine cloud brightening - as effective without clouds Atmospheric Chemistry and Physics Discussions, European Geophysical Society, EN
• Jana Sillmann, Camilla Weum Stjern, Gunnar Myhre, Piers M. Forster, 2017 Slow and fast responses of mean and extreme precipitation to different forcing in CMIP5 simulations Geophysical Research Letters, EN

2016

• 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 (ACP), Copernicus GmbH, EN

• Camilla Weum Stjern, Helene Østlie Muri, Lars Ahlm, Olivier Boucher, Jason N.S. Cole, Duoying Ji, Andy Jones, Jim M. Haywood, Ben Kravitz, Andrew Lenton, John C. Moore, Ulrike Niemeier, Steven J. Phipps, Hauke Schmidt, Shingo Watanabe, Jon Egill Kristjansson, Response to marine cloud brightening in a multi-model ensemble Atmospheric Chemistry and Physics, Copernicus, EN