Evaluating modelled tropospheric columns of CH 4 , CO and O 3 in the Arctic using ground-based FTIR measurements

• Main Authors: Flood, Victoria, A, Strong, Kimberly, Whaley, Cynthia, H, Walker, Kaley, A, Blumenstock, Thomas, Hannigan, James, W, Mellqvist, Johan, Notholt, Justus, Palm, Mathias, Röhling, Amelie, N, Arnold, Stephen, Beagley, Stephen, Chien, Rong-You, Christensen, Jesper, Deushi, Makoto, Dobricic, Srdjan, Dong, Xinyi, Fu, Joshua, S, Gauss, Michael, Gong, Wanmin, Langner, Joakim, Law, Kathy S., Marelle, Louis, Onishi, Tatsuo, Oshima, Naga, Plummer, David, A, Pozzoli, Luca, Raut, Jean-Christophe, Thomas, Manu, A, Tsyro, Svetlana, Turnock, Steven
• Other Authors: Department of Physics Toronto, University of Toronto, Canadian Centre for Climate Modelling and Analysis (CCCma), Environment and Climate Change Canada, Institut für Meteorologie und Klimaforschung - Atmosphärische Spurengase und Fernerkundung (IMK-ASF), Karlsruher Institut für Technologie (KIT), National Center for Atmospheric Research Boulder (NCAR), Chalmers University of Technology Göteborg, Institute of Environmental Physics Bremen (IUP), University of Bremen, Institute for Climate and Atmospheric Science Leeds (ICAS), School of Earth and Environment Leeds (SEE), University of Leeds-University of Leeds, The University of Tennessee Knoxville, iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change, Aarhus University Aarhus, Meteorological Research Institute Tsukuba (MRI), Japan Meteorological Agency (JMA), European Commission - Joint Research Centre Geel (JRC), Norwegian Meteorological Institute Oslo (MET), Swedish Meteorological and Hydrological Institute (SMHI), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), FINCONS SPA, Met Office Hadley Centre (MOHC), United Kingdom Met Office Exeter
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2023
• Subjects: [SDU]Sciences of the Universe [physics]; Arctic
• Online Access: https://insu.hal.science/insu-04171742; https://insu.hal.science/insu-04171742/document; https://insu.hal.science/insu-04171742/file/egusphere-2023-1161.pdf; https://doi.org/10.5194/egusphere-2023-1161

International audience Both measurements and modelling of air pollution in the Arctic are difficult. Yet with the Arctic warming at nearly four times the global average rate, and changing emissions in and near the region, it is important to understand Arctic atmospheric composition and how it is changing. This study examines the simulations of atmospheric concentrations of methane, carbon monoxide and ozone in the Arctic by 11 models. Evaluations are performed using data from five highlatitude ground-based Fourier transform infrared (FTIR) spectrometers in the Network for the Detection of Atmospheric Composition Change (NDACC). Mixing ratios of trace gases are modelled at three-hourly intervals by CESM, CMAM