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

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    • The Representation of Sea Salt Aerosols and Their Role in Polar Climate Within CMIP6 

      Lapere, Rémy; Thomas, Jennie L.; Marelle, Louis; Ekman, Annica M. L.; Frey, Markus M.; Lund, Marianne Tronstad; Makkonen, Risto; Ranjithkumar, Ananth; Salter, Matthew E.; Samset, Bjørn Hallvard; Schulz, Michael; Sogacheva, Larisa; Yang, Xin; Zieger, Paul (Peer reviewed; Journal article, 2023)
      Natural aerosols and their interactions with clouds remain an important uncertainty within climate models, especially at the poles. Here, we study the behavior of sea salt aerosols (SSaer) in the Arctic and Antarctic within ...

    • A review of coarse mineral dust in the Earth system 

      Adebiyi, Adeyemi; Kok, Jasper F.; Murray, Benjamin J.; Ryder, Claire L.; Stuut, Jan-Berend W.; Kahn, Ralph A.; Knippertz, Peter; Formenti, Paola; Mahowald, Natalie M.; Pérez García-Pando, Carlos; Klose, Martina; Ansmann, Albert; Samset, Bjørn Hallvard; Ito, Akinori; Balkanski, Yves; Di Biagio, Claudia; Romanias, Manolis N.; Huang, Yue; Meng, Jun (Peer reviewed; Journal article, 2023)
      Mineral dust particles suspended in the atmosphere span more than three orders of magnitude in diameter, from <0.1 μm to more than 100 μm. This wide size range makes dust a unique aerosol species with the ability to interact ...

    • Scientific data from precipitation driver response model intercomparison project 

      Myhre, Gunnar; Samset, Bjørn Hallvard; Forster, Piers M.; Hodnebrog, Øivind; Sandstad, Marit; Mohr, Christian Wilhelm; Stjern, Camilla Weum; Sillmann, Jana; Andrews, Timothy; Boucher, Olivier; Faluvegi, Gregory; Iversen, Trond; Lamarque, Jean-Francois; Kasoar, Matthew; Kirkevåg, Alf; Kramer, Ryan J.; Liu, Longbo; Mülmenstädt, Johannes; Oliviè, Dirk Jan Leo; Quaas, Johannes; Richardson, Thomas B.; Shawki, Dilshad; Shindell, Drew; Smith, Chris; Stier, Philip; Tang, Tao; Takemura, Toshihiko; Voulgarakis, Apostolos; Watson-Parris, Duncan (Peer reviewed; Journal article, 2022)
      This data descriptor reports the main scientific values from General Circulation Models (GCMs) in the Precipitation Driver and Response Model Intercomparison Project (PDRMIP). The purpose of the GCM simulations has been ...

    • Sensitivity of black carbon concentrations and climate impact to aging and scavenging in OsloCTM2-M7 

      Lund, Marianne Tronstad; Berntsen, Terje Koren; Samset, Bjørn Hallvard (Peer reviewed; Journal article, 2017)
      Accurate representation of black carbon (BC) concentrations in climate models is a key prerequisite for understanding its net climate impact. BC aging and scavenging are treated very differently in current models. Here, ...

    • 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 ...

    • Steady global surface warming from 1973 to 2022 but increased warming rate after 1990 

      Samset, Bjørn Hallvard; Zhou, C.; Fuglestvedt, Jan S.; Lund, Marianne Tronstad; Marotzke, J.; Zelinka, M.D. (Peer reviewed; Journal article, 2023)
      The change in global mean surface temperature is a crucial and broadly used indicator of the evolution of climate change. Any decadal scale changes in warming rate are however obfuscated by internal variability. Here we ...

    • Surface warming and wetting due to methane’s long-wave radiative effects muted by short-wave absorption 

      Allen, Robert J.; Zhao, Xueying; Randles, Cynthia A.; Kramer, Ryan J.; Samset, Bjørn Hallvard; Smith, Christopher J. (Peer reviewed; Journal article, 2023)
      Although greenhouse gases absorb primarily long-wave radiation, they also absorb short-wave radiation. Recent studies have highlighted the importance of methane short-wave absorption, which enhances its stratospherically ...

    • 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. ...

    • The regional temperature implications of strong air quality measures 

      Aamaas, Borgar; Berntsen, Terje Koren; Samset, Bjørn Hallvard (Peer reviewed; Journal article, 2019)

    • The Time Scales of Climate Responses to Carbon Dioxide and Aerosols 

      Stjern, Camilla Weum; Forster, Piers M.; Jia, Hailing; Jouan, Caroline; Kasoar, Matthew R.; Myhre, Gunnar; Oliviè, Dirk Jan Leo; Quaas, Johannes; Samset, Bjørn Hallvard; Sand, Maria; Takemura, Toshihiro; Voulgarakis, Apostolos; Wells, Christopher D. (Peer reviewed; Journal article, 2023)
      The climate system responds to changes in the amount of atmospheric greenhouse gases or aerosols through rapid processes, triggered within hours and days, and through slower processes, where the full response may only be ...