Total ozone loss during the 2015/16 Arctic winter and comparison to previous years

• Main Authors: Goutail, Florence, Lefèvre, Franck, Pommereau, Jean-Pierre, Pazmino, Andrea, Chipperfield, Martyn, Feng, Wuhu, Van Roozendaël, Michel, Eriksen, Paul, Stebel, Kerstin, Kivi, Rigel, Strong, Kim, Zhao, Xiaoyi, Walker, Kaley A.
• Other Authors: STRATO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institute for Climate and Atmospheric Science Leeds (ICAS), School of Earth and Environment Leeds (SEE), University of Leeds-University of Leeds, Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Danish Meteorological Institute (DMI), Norwegian Institute for Air Research (NILU), Finnish Meteorological Institute (FMI), Department of Physics Toronto, University of Toronto
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2016
• Subjects: [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]; Arctic; Dent
• Online Access: https://hal-insu.archives-ouvertes.fr/insu-01304699

International audience The amplitude of column ozone depletion in the Arctic is monitored every year since 1994 by comparison between total ozone measurements of eight SAOZ / NDACC UV-Vis spectrometers deployed in the Arctic and 3-D chemical transport model simulations in which ozone is considered as a passive tracer.The method allows determining the evolution of the daily rate of ozone destruction and the amplitude of the cumulative loss at the end of the winter. The amplitude of the destruction varies between 0-10% in relatively warm and short vortex duration years to 25-39% in colder and longer ones.However, as shown by the unprecedented column depletion of 39% in 2010/11, the loss is not only depen- dent on the extension of the vortex in spring, but also on its strength limiting its re-noxification by import of nitrogen oxide species from the outside, as reported by the total NO2 columns measured by the SAOZ instruments.Shown in this presentation will be the evolution of ozone loss and re-noxification in the Arctic during the winter 2015/16 compared to that of previous winters. The ability of REPROBUS and SLIMCAT 3D CTMs to reproduce adequately the observed loss each winter will be further discussed.