Total ozone loss during the 2021/22 Arctic winter and comparison to previous years
- 1LATMOS, CNRS/UVSQ/SU, Guyancourt, France (andrea.pazmino@latmos.ipsl.fr)
- 2School of Earth and Environment, University of Leeds, Leeds, UK
- 3Belgian Institute for Space Aeronomy (BIRA), Brussels, Belgium
- 4Danish Meteorological Institute, Copenhagen, Denmark
- 5Norwegian Institute for Air Research, Kjeller, Norway
- 6Finnish Meteorological Institute, Sodankylä, Finland
- 7Department of Physics, University of Toronto, Toronto, Canada
The amplitude and rate of ozone depletion in the Arctic is monitored every year since 1994 by comparison between SAOZ UV-Vis ground-based network from NDACC and Multi-Sensor Reanalysis 2 (MSR-2) total ozone measurements over 8 stations in the Arctic and 3-D chemical transport model simulations in which ozone is considered as a passive tracer. The passive ozone method allows determining 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 25-38% in colder and longer ones, which the record winters estimated in 2010/2011 and 2019/2020.
In this study, the interannual variability of 10-days average rate of 2021/2022 winter will be analyzed and compared to previous years. In addition, SAOZ NO2 data will be used to evaluate re-noxification in the Arctic. The long-term ozone loss series estimated from measurements will be compared to REPROBUS and SLIMCAT CTM simulations. Relationship with illuminated Polar Stratospheric Clouds will be also presented.
How to cite: Pazmino, A., Goutail, F., Pommereau, J.-P., Lefèvre, F., Godin-Beekmann, S., Hauchecorne, A., Lecouffe, A., Chipperfield, M., Feng, W., Van Roozendael, M., Jepsen, N., Hansen, G., Kivi, R., Alwarda, R., Strong, K., and Walker, K.: Total ozone loss during the 2021/22 Arctic winter and comparison to previous years, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-7991, https://doi.org/10.5194/egusphere-egu22-7991, 2022.
