Blar i Journal articles på forfatter "Quaas, Johannes"

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    • Black carbon aerosol reductions during COVID-19 confinement quantified by aircraft measurements over Europe 

      Krüger, Ovid O.; Holanda, Bruna A.; Chowdhury, Sourangsu; Pozzer, Andrea; Walter, David; Pöhlker, Christopher; Hernández, Maria Dolores Andrés; Burrows, John P.; Voigt, Christiane; Lelieveld, Jos; Quaas, Johannes; Pöschl, Ulrich; Pöhlker, Mira L. (Peer reviewed; Journal article, 2022)
      The abrupt reduction in human activities during the first lockdown of the COVID-19 pandemic created unprecedented atmospheric conditions. To quantify the changes in lower tropospheric air pollution, we conducted the BLUESKY ...

    • Global and regional trends of atmospheric sulfur 

      Aas, Wenche; Mortier, Augustin; Bowersox, Van C.; Cherian, Ribu; Faluvegi, Greg; Fagerli, Hilde; Hand, Jenny; Klimont, Zbigniew; Galy-Lacaux, Corinne; Lehmann, Christopher M. B.; Myhre, Cathrine Lund; Myhre, Gunnar; Oliviè, Dirk Jan Leo; Sato, Keiichi; Quaas, Johannes; Rao, P.S.P.; Schulz, Michael; Shindell, Drew; Skeie, Ragnhild Bieltvedt; Stein, Ariel; Takemura, Toshihiko; Tsyro, Svetlana; Vet, Robert; Xu, Xiaobin (Peer reviewed; Journal article, 2019)
      The profound changes in global SO2 emissions over the last decades have affected atmospheric composition on a regional and global scale with large impact on air quality, atmospheric deposition and the radiative forcing of ...

    • 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 ...

    • Radiative forcing of climate change from the Copernicus reanalysis of atmospheric composition 

      Bellouin, Nicolas; Davies, William H.; P. Shine, Keith; Quaas, Johannes; Mülmenstädt, Johannes; M. Forster, Piers; Smith, Christopher J.; Lee, Lindsay; Regayre, Leighton; Brasseur, Guy; Sudarchikova, Natalia; Bouarar, Idir; Boucher, Olivier; Myhre, Gunnar (Journal article; Peer reviewed, 2020)
      Radiative forcing provides an important basis for understanding and predicting global climate changes, but its quantification has historically been done independently for different forcing agents, has involved observations ...

    • Reducing the aerosol forcing uncertainty using observational constraints on warm rain processes 

      Mülmenstädt, Johannes; Nam, Christine; Salzmann, Marc; Kretzschmar, Jan; L'Ecuyer, Tristan S.; Lohmann, Ulrike; Ma, Po-Lun; Myhre, Gunnar; Neubauer, David; Stier, Philip; Suzuki, Kentaroh; Wang, Minghuai; Quaas, Johannes (Journal article; Peer reviewed, 2020)
      Global climate models (GCMs) disagree with other lines of evidence on the rapid adjustments of cloud cover and liquid water path to anthropogenic aerosols. Attempts to use observations to constrain the parameterizations ...

    • 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 ...

    • 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 ...