Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements
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 exami...
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ftcopernicus:oai:publications.copernicus.org:egusphere111912 2023-07-30T04:00:54+02:00 Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements 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 2023-07-03 application/pdf https://doi.org/10.5194/egusphere-2023-1161 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1161/ eng eng doi:10.5194/egusphere-2023-1161 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1161/ eISSN: Text 2023 ftcopernicus https://doi.org/10.5194/egusphere-2023-1161 2023-07-10T16:24:18Z 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 high-latitude 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, DEHM, EMEP MSC-W, GEM-MACH, GEOS-Chem, MATCH, MATCH-SALSA, MRI-ESM2, UKESM1 and WRF-Chem for the years 2008, 2009, 2014, and 2015. The comparisons focus on the troposphere (0–7 km partial columns) at Eureka, Canada; Thule, Greenland; Ny Ålesund, Norway; Kiruna, Sweden; and Harestua, Norway. Overall, the models are biased low in the tropospheric column, on average by -9.6 % for CH 4 , -21 % for CO and -18 % for O 3 . Results for CH 4 are relatively consistent across the four years, whereas CO has a maximum negative bias in the spring and minimum in the summer, and O 3 has a maximum difference centred around the summer. The average differences for the models are within the FTIR uncertainties for approximately 15 % of the model-location comparisons. Text Arctic Greenland Kiruna Ny Ålesund Ny-Ålesund Thule Copernicus Publications: E-Journals Arctic Ny-Ålesund Kiruna Canada Greenland Norway Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
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 high-latitude 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, DEHM, EMEP MSC-W, GEM-MACH, GEOS-Chem, MATCH, MATCH-SALSA, MRI-ESM2, UKESM1 and WRF-Chem for the years 2008, 2009, 2014, and 2015. The comparisons focus on the troposphere (0–7 km partial columns) at Eureka, Canada; Thule, Greenland; Ny Ålesund, Norway; Kiruna, Sweden; and Harestua, Norway. Overall, the models are biased low in the tropospheric column, on average by -9.6 % for CH 4 , -21 % for CO and -18 % for O 3 . Results for CH 4 are relatively consistent across the four years, whereas CO has a maximum negative bias in the spring and minimum in the summer, and O 3 has a maximum difference centred around the summer. The average differences for the models are within the FTIR uncertainties for approximately 15 % of the model-location comparisons. |
format |
Text |
author |
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 |
spellingShingle |
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 Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements |
author_facet |
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 |
author_sort |
Flood, Victoria A. |
title |
Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements |
title_short |
Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements |
title_full |
Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements |
title_fullStr |
Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements |
title_full_unstemmed |
Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements |
title_sort |
evaluating modelled tropospheric columns of ch4, co and o3 in the arctic using ground-based ftir measurements |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-1161 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1161/ |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Arctic Ny-Ålesund Kiruna Canada Greenland Norway Eureka |
geographic_facet |
Arctic Ny-Ålesund Kiruna Canada Greenland Norway Eureka |
genre |
Arctic Greenland Kiruna Ny Ålesund Ny-Ålesund Thule |
genre_facet |
Arctic Greenland Kiruna Ny Ålesund Ny-Ålesund Thule |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2023-1161 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1161/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-1161 |
_version_ |
1772811581273407488 |