Blar i CICERO Research Archive på tidsskrift "Atmospheric Chemistry and Physics"

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    • Local and remote temperature response of regional SO2 emissions 

      Lewinschal, Anna; Ekman, Annica M. L.; Hansson, Hans-Christen; Sand, Maria; Berntsen, Terje Koren; Langner, Joakim (Journal article; Peer reviewed, 2019)
      Short-lived anthropogenic climate forcers (SLCFs), such as sulfate aerosols, affect both climate and air quality. Despite being short-lived, these forcers do not affect temperatures only locally; regions far away from the ...

    • A machine learning examination of hydroxyl radical differences among model simulations for CCMI-1 

      Nicely, Julie M.; Duncan, Bryan; Hanisco, Thomas F.; Wolfe, Glenn M.; Salawitch, Ross J.; Deushi, Makoto; Haslerud, Amund Søvde; Jöckel, Patrick; Josse, Béatrice; Kinnison, Douglas E.; Klekociuk, Andrew; Manyin, Michael E.; Marécal, Virginie; Morgenstern, Olaf; Murray, Lee T.; Myhre, Gunnar; Oman, Luke D.; Pitari, Giovanni; Pozzer, Andrea; Quaglia, Ilaria; Revell, Laura E.; Rozanov, Eugene; Stenke, Andrea; Stone, Kane; Strahan, Susan E.; Tilmes, Simone; Tost, Holger; Westervelt, Daniel M.; Zeng, Guang (Journal article; Peer reviewed, 2020)
      The hydroxyl radical (OH) plays critical roles within the troposphere, such as determining the lifetime of methane (CH4), yet is challenging to model due to its fast cycling and dependence on a multitude of sources and ...

    • Marine cloud brightening – as effective without clouds 

      Ahlm, Lars; Jones, Andy; Stjern, Camilla Weum; Muri, Helene; Kravitz, Ben; Kristjansson, Jon Egill (Peer reviewed; Journal article, 2017)

    • 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 M.; 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 ...

    • Pre-industrial to end 21st century projections of tropospheric ozone from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) 

      Young, P.J.; Archibald, A. T.; Bowman, K. W.; Lamarque, J. F.; Naik, V.; Stevenson, DS; Tilmes, S.; Voulgarakis, A.; Wild, O.; Bergmann, D.; Cameron-Smith, Philip J.; Cionni, Irene; Collins, WJ; Dalsøren, Stig Bjørløw; Doherty, RM; Eyring, V; Faluvegi, G; Horowitz, LW; Josse, B.; Lee, YH; MacKenzie, IA; Nagashima, T; Plummer, D. A.; Righi, M.; Rumbold, Steven T.; Skeie, Ragnhild Bieltvedt; Shindell, DT; Strode, S.A.; Sudo, K; Szopa, S; Zeng, Guangming (Journal article; Peer reviewed, 2013)
      Present day tropospheric ozone and its changes between 1850 and 2100 are considered, analysing 15 global models that participated in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). The ensemble ...

    • Preindustrial to present-day changes in tropospheric hydroxyl radical and methane lifetime from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) 

      Naik, V; Voulgarakis, A; Fiore, AM; Horowitz, LW; Lamarque, JF; Lin, M; Prather, MJ; Young, PJ; Bergmann, D.; Cameron-Smith, PJ; Cionni, I; Collins, WJ; Dalsøren, Stig Bjørløw; Doherty, R; Eyring, V; Faluvegi, G; Folberth, GA; Josse, B; Lee, YH; MacKenzie, IA; Nagashima, T; van Noije, TPC; Plummer, DA; Righi, M; Rumbold, ST; Skeie, Ragnhild Bieltvedt; Shindell, DT; Stevenson, DS; Strode, S; Sudo, K; Szopa, S; Zeng, G (Peer reviewed; Journal article, 2013)
      We have analysed time-slice simulations from 17 global models, participating in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP), to explore changes in present-day (2000) hydroxyl radical (OH) ...

    • Radiative forcing in the ACCMIP historical and future climate simulations 

      Shindell, D.T.; Lamarque, J.-F.; Schulz, M.; Flanner, M.; Jiao, C.; Chin, M.; Young, P.J.; Lee, Y.H.; Rotstayn, L.; Mahowald, N.; Milly, G.; Faluvegi, G.; Balkanski, Y.; Collins, W.J.; Conley, A.J.; Dalsøren, Stig Bjørløw; Easter, R.; Ghan, S.; Horowitz, L.; Liu, X.; Myhre, Gunnar; Nagashima, T.; Naik, V.; Rumbold, S.T.; Skeie, Ragnhild Bieltvedt; Sudo, K.; Szopa, S.; Takemura, T.; Voulgarakis, A.; Yoon, J.-H.; Lo, F. (Peer reviewed; Journal article, 2013)
      The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) examined the short-lived drivers of climate change in current climate models. Here we evaluate the 10 ACCMIP models that included aerosols, 8 of ...

    • 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 ...

    • Regional temperature change potentials for short-lived climate forcers based on radiative forcing from multiple models 

      Aamaas, Borgar; Berntsen, Terje Koren; Fuglestvedt, Jan S.; Shine, Keith P.; Collins, William J (Journal article; Peer reviewed, 2017)
      We calculate the absolute regional temperature change potential (ARTP) of various short-lived climate forcers (SLCFs) based on detailed radiative forcing (RF) calculations from four different models. The temperature response ...

    • Response to marine cloud brightening in a multi-model ensemble 

      Stjern, Camilla Weum; Muri, Helene; Ahlm, Lars; Boucher, Olivier; Cole, Jason N.S.; Ji, Duoying; Jones, Andy; Haywood, Jim M.; Kravitz, Ben; Lenton, Andrew; Moore, John C.; Niemeier, Ulrike; Phipps, Steven J.; Schmidt, Hauke; Watanabe, Shingo; Kristjansson, Jon Egill (Peer reviewed; Journal article, 2018)

    • 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 ...

    • Strong impacts on aerosol indirect effects from historical oxidant changes 

      Karset, Inger Helene H.; Berntsen, Terje Koren; Storelvmo, Trude; Alterskjær, Kari; Grini, Alf; Oliviè, Dirk Jan Leo; Kirkevåg, Alf; Seland, Øyvind; Iversen, Trond; Schulz, Michael (Peer reviewed; Journal article, 2018)

    • The regional temperature implications of strong air quality measures 

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

    • Tropospheric ozone changes, radiative forcing and attribution to emissions in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) 

      Stevenson, D.S.; Young, P.J.; Naik, V.; Lamarque, J.-F.; Shindell, D.T.; Voulgarakis, A.; Skeie, Ragnhild Bieltvedt; Dalsøren, Stig Bjørløw; Myhre, Gunnar; Berntsen, Terje Koren; Folberth, G.A.; Rumbold, S.T.; Collins, W.J.; MacKenzie, I.A.; Doherty, R.M.; Zeng, G.; van Noije, T.P.C; Strunk, A.; Bergmann, D.; Cameron-Smith, P.; Plummer, D.A.; Strode, S.A.; Horowitz, L.; Lee, Y.H.; Szopa, S.; Sudo, K.; Nagashima, T.; Josse, B.; Cionni, I.; Righi, M.; Eyring, V.; Conley, A.; Bowman, K.W.; Wild, O.; Archibald, A. T. (Peer reviewed; Journal article, 2013)
      Ozone (O3) from 17 atmospheric chemistry models taking part in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) has been used to calculate tropospheric ozone radiative forcings (RFs). All models ...

    • What controls the vertical distribution of aerosol? Relationships between process sensitivity in HadGEM3-UKCA and inter-model variation from AeroCom Phase II 

      Kipling, Zak; Stier, Philip; Johnson, Colin E.; Mann, Graham W.; Bellouin, Nicolas; Bauer, Susanne E.; Bergman, Tommi; Chin, Mian; Diehl, Thomas; Ghan, Steven John; Iversen, Trond; Kirkevåg, Alf; Kokkola, Harri; Liu, Xiaohong; Luo, Gan; van Noije, Twan P.C.; Pringle, Kirsty J.; von Salzen, Knut; Schulz, Michael; Seland, Øyvind; Skeie, Ragnhild Bieltvedt; Takemura, Toshihiko; Tsigaridis, Kostas; Zhang, Kai (Peer reviewed; Journal article, 2016)
      he vertical profile of aerosol is important for its radiative effects, but weakly constrained by observations on the global scale, and highly variable among different models. To investigate the controlling factors in one ...