Total ozone loss during the 2011/12 Arctic winter and comparison to previous years

• Main Authors: Goutail, Florence, Lefèvre, Franck, Pommereau, Jean-Pierre, Pazmino, Andrea, Chipperfield, M., Feng, W., Van Roozendael, M., Eriksen, P., Stebel, K., Dorokhov, V., Kyro, E., Zhao, X., Strong, K.
• 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), School of Earth and Environment Leeds (SEE), 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), Central Aerological Observatory (CAO), Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet), Finnish Meteorological Institute (FMI), Department of Physics Toronto, University of Toronto
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2012
• Subjects: [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]; Arctic
• Online Access: https://hal.archives-ouvertes.fr/hal-00740772

The amount of ozone depletion in the Arctic is monitored every year since 1994 by comparison between total ozone measurements of the SAOZ / NDACC UV-Vis spectrometer and 3-D chemical transport model simulations in which ozone is considered as a passive tracer. The method allows to determine the period and the daily rate of ozone destruction and to calculate the amplitude of the cumulative loss at the end of the winter. The destruction is found to be highly dependent on the stratospheric temperature history, varying between 0-10% in relatively warm and short vortex duration years to 25-30% in colder and longer ones with an exception during the winter 2010/2011 when an unprecedented depletion of 39% was reported. In this study, preliminary results for the winter 2011/12 will be presented and compared to previous winters. The focus will be put on the timing of the chemical ozone loss and on the ability of two 3D CTM (Reprobus and Slimcat) to reproduce the loss.