Blar i CICERO Research Archive på forfatter "Samset, Bjørn Hallvard"

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    • A warmer policy for a colder climate: Can China both reduce poverty and cap carbon emissions? 

      Glomsrød, Solveig; Wei, Taoyuan; Aamaas, Borgar; Lund, Marianne Tronstad; Samset, Bjørn Hallvard (Journal article; Peer reviewed, 2016)
      Reducing global carbon dioxide (CO2) emissions is often thought to be at odds with economic growth and poverty reduction. Using an integrated assessment modeling approach, we find that China can cap CO2 emissions at 2015 ...

    • Accelerated increases in global and Asian summer monsoon precipitation from future aerosol reductions 

      Wilcox, Laura J.; Liu, Zhen; Samset, Bjørn Hallvard; Hawkins, Ed; Lund, Marianne Tronstad; Nordling, Kalle; Undorf, Sabine; Bollasina, Massimo; Ekman, Annica M.L.; Krishnan, Srinath; Merikanto, Joonas; Turner, Andrew G. (Journal article; Peer reviewed, 2020)
      There is a large range of future aerosol emissions scenarios explored in the Shared Socioeconomic Pathways (SSPs), with plausible pathways spanning a range of possibilities from large global reductions in emissions by 2050 ...

    • Aerosol absorption in global models from AeroCom phase III 

      Sand, Maria; Samset, Bjørn Hallvard; Myhre, Gunnar; Gliss, Jonas; Bauer, Susanne E.; Bian, Huisheng; Chin, Mian; Checa-Garcia, Ramiro; Ginoux, Paul; Kipling, Zak; Kirkevåg, Alf; Kokkola, Harri; Le Sager, Philippe; Lund, Marianne Tronstad; Matsui, Hitoshi; Van Noije, Twan; Oliviè, Dirk Jan Leo; Rémy, Samuel; Schulz, Michael; Stier, Philip; Stjern, Camilla Weum; Takemura, Toshihiko; Tsigaridis, Kostas; Tsyro, Svetlana; Watson-Parris, Duncan (Peer reviewed; Journal article, 2021)
      Aerosol-induced absorption of shortwave radiation can modify the climate through local atmospheric heating, which affects lapse rates, precipitation, and cloud formation. Presently, the total amount of aerosol absorption ...

    • Aerosols at the poles: an AeroCom Phase II multi-model evaluation 

      Sand, Maria; Samset, Bjørn Hallvard; Balkanski, Yves; Bauer, Susanne; Bellouin, Nicolas; Berntsen, Terje Koren; Bian, Huisheng; Chin, Mian; Diehl, Thomas; Easter, Richard; Ghan, Steve J.; Iversen, Trond; Kirkevåg, Alf; Lamarque, Jean-Francois; Lin, Guangxing; Liu, Xiaohong; Luo, Gan; Myhre, Gunnar; Van Noije, Twan P.C.; Penner, Joyce E.; Schulz, Michael; Seland, Øyvind; Skeie, Ragnhild Bieltvedt; Stier, Philip; Takemura, Toshihiko; Tsigaridis, Kostas; Yu, Fangqun; Zhang, Kai; Zhang, Hua (Peer reviewed; Journal article, 2017)

    • Black Carbon and Precipitation: An Energetics Perspective 

      Sand, Maria; Samset, Bjørn Hallvard; Tsigaridis, Kostas; Bauer, Susanne E.; Myhre, Gunnar (Journal article; Peer reviewed, 2020)
      Black carbon (BC) aerosols influence precipitation through a range of processes. The climate response to the presence of BC is however highly dependent on its vertical distribution. Here, we analyze the changes in the ...

    • Black carbon vertical profiles strongly affect its radiative forcing uncertainty 

      Samset, Bjørn Hallvard; Myhre, Gunnar; Schulz, M.; Balkanski, Y.; Bauer, S.; Berntsen, Terje Koren; Bian, H.; Bellouin, N.; Diehl, T.; Easter, R.C.; Ghan, S.J.; Iversen, Trond; Kinne, S.; Kirkevåg, Alf; Lamarque, J.-F.; Lin, G.; Liu, X.; Penner, J.E.; Seland, Øyvind; Skeie, Ragnhild Bieltvedt; Stier, P.; Takemura, T.; Tsigaridis, K.; Zhang, K. (Peer reviewed; Journal article, 2013)
      The impact of black carbon (BC) aerosols on the global radiation balance is not well constrained. Here twelve global aerosol models are used to show that at least 20% of the present uncertainty in modeled BC direct radiative ...

    • Climate response to externally mixed black carbon as a function of altitude 

      Samset, Bjørn Hallvard; Myhre, Gunnar (Peer reviewed; Journal article, 2015)
      The climate response to the presence of black carbon (BC) aerosol at a given altitude in the atmosphere is investigated using a global circulation model. The vertical dependence of the efficiency with which BC exerts ...

    • Cloudy-sky contributions to the direct aerosol effect 

      Myhre, Gunnar; Samset, Bjørn Hallvard; Mohr, Christian Wilhelm; Alterskjær, Kari; Balkanski, Yves; Bellouin, Nicolas; Chin, Mian; Haywood, James; Hodnebrog, Øivind; Kinne, Stefan; Lin, Guangxing; Lund, Marianne Tronstad; Penner, Joyce E.; Schulz, Michael; Schutgens, Nick; Skeie, Ragnhild Bieltvedt; Stier, Philip; Takemura, Toshihiko; Zhang, Kai (Journal article; Peer reviewed, 2020)
      The radiative forcing of the aerosol–radiation interaction can be decomposed into clear-sky and cloudy-sky portions. Two sets of multi-model simulations within Aerosol Comparisons between Observations and Models (AeroCom), ...

    • Counteracting the climate effects of volcanic eruptions using short-lived greenhouse gases 

      Fuglestvedt, Jan S.; Samset, Bjørn Hallvard; Shine, Keith P. (Peer reviewed; Journal article, 2014)
      A large volcanic eruption might constitute a climate emergency, significantly altering global temperature and precipitation for several years. Major future eruptions will occur, but their size or timing cannot be predicted. ...

    • Delayed emergence of a global temperature response after emission mitigation 

      Samset, Bjørn Hallvard; Fuglestvedt, Jan S.; Lund, Marianne Tronstad (Journal article; Peer reviewed, 2020)
      A major step towards achieving the goals of the Paris agreement would be a measurable change in the evolution of global warming in response to mitigation of anthropogenic emissions. The inertia and internal variability of ...

    • Distinct surface response to black carbon aerosols 

      Tang, Tao; Shindell, Drew; Zhang, Yuqiang; Voulgarakis, Apostolos; Lamarque, Jean-Francois; Myhre, Gunnar; Faluvegi, Greg; Samset, Bjørn Hallvard; Andrews, Timothy; Oliviè, Dirk Jan Leo; Takemura, Toshihiko; Lee, Xuhui (Journal article; Peer reviewed, 2021)
      For the radiative impact of individual climate forcings, most previous studies focused on the global mean values at the top of the atmosphere (TOA), and less attention has been paid to surface processes, especially for ...

    • Dynamical response of Mediterranean precipitation to greenhouse gases and aerosols 

      Tang, Tao; Shindell, Drew; Samset, Bjørn Hallvard; Boucher, Olivier; Forster, Piers M.; Hodnebrog, Øivind; Myhre, Gunnar; Sillmann, Jana; Voulgarakis, Apostolos; Andrews, Timothy; Faluvegi, Gregory S.; Fläschner, Dagmar; Iversen, Trond; Kasoar, Matthew; Kharin, Viatcheslav; Kirkevåg, Alf; Lamarque, Jean-Francois; Oliviè, Dirk Jan Leo; Richardson, Thomas; Stjern, Camilla Weum; Takemura, Toshihiko (Peer reviewed; Journal article, 2018)

    • Earlier emergence of a temperature response to mitigation by filtering annual variability 

      Samset, Bjørn Hallvard; Zhou, C.; Fuglestvedt, Jan S.; Lund, Marianne Tronstad; Marotzke, J.; Zelinka, M.D. (Journal article; Peer reviewed, 2022)
      The rate of global surface warming is crucial for tracking progress towards global climate targets, but is strongly influenced by interannual-to-decadal variability, which precludes rapid detection of the temperature ...

    • The effect of rapid adjustments to halocarbons and N2O on radiative forcing 

      Hodnebrog, Øivind; Myhre, Gunnar; Kramer, Ryan J.; Shine, Keith P.; Andrews, Timothy; Faluvegi, Greg; Kasoar, Matthew; Kirkevåg, Alf; Lamarque, Jean-Francois; Mülmenstädt, Johannes; Oliviè, Dirk Jan Leo; Samset, Bjørn Hallvard; Shindell, Drew; Smith, Christopher J.; Takemura, Toshihiko; Voulgarakis, Apostolos (Journal article; Peer reviewed, 2020)
      Rapid adjustments occur after initial perturbation of an external climate driver (e.g., CO2) and involve changes in, e.g. atmospheric temperature, water vapour and clouds, independent of sea surface temperature changes. ...

    • Energy market impacts of nuclear power phase-out policies 

      Glomsrød, Solveig; Wei, Taoyuan; Mideksa, Torben Kenea; Samset, Bjørn Hallvard (Journal article; Peer reviewed, 2014)
      Since the Fukushima disaster in Japan in March 2011, safety concerns have escalated and policies toward nuclear power are being reconsidered in several countries. This article presents a study of the upward pressure on ...

    • Energy Market Impacts of Nuclear Power Phase-Out Policies 

      Glomsrød, Solveig; Wei, Taoyuan; Mideksa, Torben Kenea; Samset, Bjørn Hallvard (CICERO Working Paper;2013:01, Research report, 2013)
      After the Fukushima disaster in March 2011 safety concerns have escalated and policies towards nuclear power are being reconsidered in several countries. This article presents a study of the effect of nuclear power phase-out ...

    • Estimating Source Region Influences on Black Carbon Abundance, Microphysics, and Radiative Effect Observed Over South Korea 

      Lamb, Kara D.; Perring, Anne E.; Samset, Bjørn Hallvard; Peterson, Dave; Davis, Sean; Anderson, Bruce E.; Beyersdorf, Andreas; Blake, Donald R; Campuzano-Jost, Pedro; Corr, Chelsea A.; Diskin, Glenn S.; Kondo, Yutaka; Moteki, Nobuhiro; Nault, Benjamin A.; Oh, Jun; Park, Minsu; Pusede, Sally E.; Simpson, Isobel J.; Thornhill, Kenneth L.; Wisthaler, Armin; Schwarz, Joshua P. (Peer reviewed; Journal article, 2018)

    • Frequency of extreme precipitation increases extensively with event rareness under global warming 

      Myhre, Gunnar; Alterskjær, Kari; Stjern, Camilla Weum; Hodnebrog, Øivind; Marelle, Louis; Samset, Bjørn Hallvard; Sillmann, Jana; Schaller, Nathalie; Fischer, Erich; Schulz, Michael; Stohl, Andreas (Journal article; Peer reviewed, 2019)
      The intensity of the heaviest extreme precipitation events is known to increase with global warming. How often such events occur in a warmer world is however less well established, and the combined effect of changes in ...

    • Global and regional radiative forcing from 20 % reductions in BC, OC and SO4 - An HTAP2 multi-model study 

      Stjern, Camilla Weum; Samset, Bjørn Hallvard; Myhre, Gunnar; Bian, Huisheng; Chin, Mian; Davila, Yanko; Dentener, Frank; Emmons, Louisa; Flemming, Johannes; Haslerud, Amund Søvde; Henze, Daven; Jonson, Jan Eiof; Kucsera, Tom; Lund, Marianne Tronstad; Schulz, Michael; Sudo, Kengo; Takemura, Toshihiko; Tilmes, Simone (Peer reviewed; Journal article, 2016)
      In the Hemispheric Transport of Air Pollution Phase 2 (HTAP2) exercise, a range of global atmospheric general circulation and chemical transport models performed coordinated perturbation experiments with 20 % reductions ...

    • Historical total ozone radiative forcing derived from CMIP6 simulations 

      Skeie, Ragnhild Bieltvedt; Myhre, Gunnar; Hodnebrog, Øivind; Cameron-Smith, Philip J.; Deushi, Makoto; Hegglin, Michaela I.; Horowitz, Larry W.; Kramer, Ryan J.; Michou, Martine; Mills, Michael J.; Oliviè, Dirk Jan Leo; O’Connor, Fiona M.; Paynter, David; Samset, Bjørn Hallvard; Sellar, Alistair; Shindell, Drew; Takemura, Toshihiko; Tilmes, Simone; Wu, Tongwen (Journal article; Peer reviewed, 2020)
      Radiative forcing (RF) time series for total ozone from 1850 up to the present day are calculated based on historical simulations of ozone from 10 climate models contributing to the Coupled Model Intercomparison Project ...