• 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 ...
    • 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 ...
    • 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. ...
    • 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 ...
    • Energy market impacts of nuclear power phase-out policies 

      Glomsrød, Solveig; Wei, Taoyuan; Mideksa, Torben; 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 ...
    • 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 ...
    • Local biomass burning is a dominant cause of the observed precipitation reduction in southern Africa 

      Hodnebrog, Øivind; Myhre, Gunnar; Forster, Piers M.; Sillmann, Jana; Samset, Bjørn Hallvard (Peer reviewed; Journal article, 2016)
      Observations indicate a precipitation decline over large parts of southern Africa since the 1950s. Concurrently, atmospheric concentrations of greenhouse gases and aerosols have increased due to anthropogenic activities. ...
    • Multi-model simulations of aerosol and ozone radiative forcing due to anthropogenic emission changes during the period 1990-2015 

      Myhre, Gunnar; Aas, Wenche; Cherian, Ribu; Collins, W; Faluvegi, Greg; Flanner, M.; Forster, Piers; Hodnebrog, Øivind; Klimont, Zbigniew; Lund, Marianne Tronstad; Mulmenstädt, Johannes; Myhre, Cathrine Lund; Oliviè, Dirk Jan Leo; Prather, Michael J.; Quaas, Johannes; Samset, Bjørn Hallvard; Schnell, Jordan; Schulz, Michael; Shindell, Drew; Skeie, Ragnhild Bieltvedt; Takemura, Toshihiko; Tsyro, Svetlana G. (Peer reviewed; Journal article, 2017)
      Over the past few decades, the geographical distribution of emissions of substances that alter the atmospheric energy balance has changed due to economic growth and air pollution regulations. Here, we show the resulting ...
    • Near- and long-term global warming of current emissions 

      Lund, Marianne Tronstad; Stjern, Camilla Weum; Samset, Bjørn Hallvard; Aamaas, Borgar; Kallbekken, Steffen (CICERO Report;2018:15, Research report, 2018-11-05)
      Human activities influence the climate in a range of ways. While emissions of CO2 from burning of fossil fuels is the dominant factor behind the present rapid global warming, many other gases and particles also contribute. ...
    • Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations 

      Myhre, Gunnar; Samset, Bjørn Hallvard; Schulz, M.; Balkanski, Y.; Bauer, S.; Berntsen, Terje Koren; Bian, H.; Bellouin, N; Chin, M; Diehl, T; Easter, R. C.; Feichter, J; Ghan, SJ; Hauglustaine, D; Iversen, Trond; Kinne, S; Kirkevåg, A; Lamarque, J. F.; Lin, G; Liu, X.; Lund, Marianne Tronstad; Luo, G; Ma, X; van Noije, T; Penner, JE; Rasch, P. J.; Ruiz, A.; Seland, Ø.; Skeie, Ragnhild Bieltvedt; Stier, P; Takemura, T.; Tsigaridis, K; Wang, P.; Wang, Z; Xu, L.; Yu, H; Yu, F.; Yoon, J.-H.; Zhang, K.; Zhang, H.; Zhou, C. (Peer reviewed; Journal article, 2013)
      We report on the AeroCom Phase II direct aerosol effect (DAE) experiment where 16 detailed global aerosol models have been used to simulate the changes in the aerosol distribution over the industrial era. All 16 models ...
    • Recommendations for diagnosing effective radiative forcing from climate models for CMIP6 

      Forster, Piers M.; Richardson, T.; Maycock, A. C.; Smith, C. J.; Samset, Bjørn Hallvard; Myhre, Gunnar; Andrews, T.; Pincus, R.; Schulz, Michael (Journal article; Peer reviewed, 2016)
      The usefulness of previous Coupled Model Intercomparison Project (CMIP) exercises has been hampered by a lack of radiative forcing information. This has made it difficult to understand reasons for differences between model ...
    • Standard climate models radiation codes underestimate black carbon radiative forcing 

      Myhre, Gunnar; Samset, Bjørn Hallvard (Peer reviewed; Journal article, 2015)
      Radiative forcing (RF) of black carbon (BC) in the atmosphere is estimated using radiative transfer codes of various complexities. Here we show that the two-stream radiative transfer codes used most in climate models give ...
    • The climate impacts of current black carbon and organic carbon emissions 

      Aamaas, Borgar; Lund, Marianne Tronstad; Myhre, Gunnar; Samset, Bjørn Hallvard; Stjern, Camilla Weum; Kallbekken, Steffen (CICERO Report;2018:08, Research report, 2018-06-20)
      In Part 1, we present a summary of recent research into the climate impact of black and organic carbon. There have been many developments on the research front in recent years, and this rapid pace is expected to continue. ...