Now showing items 1-4 of 4

    • Chemical Evolution of the Exceptional Arctic Stratospheric Winter 2019/2020 Compared to Previous Arctic and Antarctic Winters 

      Wohltmann, I.ORCIDiD; von der Gathen, P.ORCIDiD; Lehmann, R.; Deckelmann, H.ORCIDiD; Manney, G. L.ORCIDiD; Davies, J.; Tarasick, D.ORCIDiD; Jepsen, N.; Kivi, R.ORCIDiD; Lyall, N.; Rex, M. (Journal of Geophysical Research: Atmospheres, 2021-09-21)
      The winter 2019/2020 showed the lowest ozone mixing ratios ever observed in the Arctic winter stratosphere. It was the coldest Arctic stratospheric winter on record and was characterized by an unusually strong and long‐lasting ...
    • COVID‐19 Crisis Reduces Free Tropospheric Ozone Across the Northern Hemisphere 

      Steinbrecht, WolfgangORCIDiD; Kubistin, DagmarORCIDiD; Plass‐Dülmer, Christian; Davies, Jonathan; Tarasick, David W.ORCIDiD; Gathen, Peter von derORCIDiD; Deckelmann, HolgerORCIDiD; Jepsen, Nis; Kivi, RigelORCIDiD; Lyall, Norrie; Palm, MatthiasORCIDiD; Notholt, JustusORCIDiD; Kois, BogumilORCIDiD; Oelsner, PeterORCIDiD; Allaart, Marc; Piters, Ankie; Gill, Michael; Van Malderen, RoelandORCIDiD; Delcloo, Andy W.ORCIDiD; Sussmann, Ralf; Mahieu, Emmanuel; Servais, Christian; Romanens, Gonzague; Stübi, ReneORCIDiD; Ancellet, Gerard; Godin‐Beekmann, Sophie; Yamanouchi, ShomaORCIDiD; Strong, KimberlyORCIDiD; Johnson, BryanORCIDiD; Cullis, PatrickORCIDiD; Petropavlovskikh, IrinaORCIDiD; Hannigan, James W.ORCIDiD; Hernandez, Jose‐Luis; Diaz Rodriguez, Ana; Nakano, Tatsumi; Chouza, Fernando; Leblanc, Thierry; Torres, Carlos; Garcia, Omaira; Röhling, Amelie N.; Schneider, MatthiasORCIDiD; Blumenstock, Thomas; Tully, MattORCIDiD; Paton‐Walsh, Clare; Jones, NicholasORCIDiD; Querel, RichardORCIDiD; Strahan, SusanORCIDiD; Stauffer, Ryan M.ORCIDiD; Thompson, Anne M.ORCIDiD; Inness, Antje; Engelen, RichardORCIDiD; Chang, Kai‐Lan; Cooper, Owen R.ORCIDiD (Geophysical Research Letters, 2021-02-26)
      Throughout spring and summer 2020, ozone stations in the northern extratropics recorded unusually low ozone in the free troposphere. From April to August, and from 1 to 8 kilometers altitude, ozone was on average 7% ...
    • Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 

      Wohltmann, I.ORCIDiD; von der Gathen, P.ORCIDiD; Lehmann, R.; Maturilli, M.ORCIDiD; Deckelmann, H.ORCIDiD; Manney, G. L.ORCIDiD; Davies, J.; Tarasick, D.ORCIDiD; Jepsen, N.; Kivi, R.ORCIDiD; Lyall, N.; Rex, M. (Geophysical Research Letters, 2020)
      In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01–0.1 ppm in nearly all spring seasons since the late 1980s, corresponding to 95–99% local chemical loss. In contrast, ...
    • The Response in Air Quality to the Reduction of Chinese Economic Activities During the COVID-19 Outbreak 

      Shi, XiaoqinORCIDiD; Brasseur, Guy P.ORCIDiD (Geophysical Research Letters, 2020)
      During the COVID-19 outbreak that took place in early 2020, the economic activities in China were drastically reduced and accompanied by a strong reduction in the emission of primary air pollutants. On the basis of ...