Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities
We use a regional chemistry transport model (Weather Research and Forecasting model coupled with chemistry, WRF-Chem) in conjunction with surface observations of tropospheric ozone and Ozone Monitoring Instrument (OMI) satellite retrievals of tropospheric column NO 2 to evaluate processes controllin...
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ftdoajarticles:oai:doaj.org/article:ca5de892c1dd409fa0888044bef16fba 2023-05-15T14:56:40+02:00 Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities T. Thorp S. R. Arnold R. J. Pope D. V. Spracklen L. Conibear C. Knote M. Arshinov B. Belan E. Asmi T. Laurila A. I. Skorokhod T. Nieminen T. Petäjä 2021-03-01T00:00:00Z https://doi.org/10.5194/acp-21-4677-2021 https://doaj.org/article/ca5de892c1dd409fa0888044bef16fba EN eng Copernicus Publications https://acp.copernicus.org/articles/21/4677/2021/acp-21-4677-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-4677-2021 1680-7316 1680-7324 https://doaj.org/article/ca5de892c1dd409fa0888044bef16fba Atmospheric Chemistry and Physics, Vol 21, Pp 4677-4697 (2021) Physics QC1-999 Chemistry QD1-999 article 2021 ftdoajarticles https://doi.org/10.5194/acp-21-4677-2021 2022-12-31T06:29:11Z We use a regional chemistry transport model (Weather Research and Forecasting model coupled with chemistry, WRF-Chem) in conjunction with surface observations of tropospheric ozone and Ozone Monitoring Instrument (OMI) satellite retrievals of tropospheric column NO 2 to evaluate processes controlling the regional distribution of tropospheric ozone over western Siberia for late spring and summer in 2011. This region hosts a range of anthropogenic and natural ozone precursor sources, and it serves as a gateway for near-surface transport of Eurasian pollution to the Arctic. However, there is a severe lack of in situ observations to constrain tropospheric ozone sources and sinks in the region. We show widespread negative bias in WRF-Chem tropospheric column NO 2 when compared to OMI satellite observations from May–August, which is reduced when using ECLIPSE (Evaluating the Climate and Air Quality Impacts of Short-Lived Pollutants) v5a emissions (fractional mean bias (FMB) = − 0.82 to − 0.73) compared with the EDGAR (Emissions Database for Global Atmospheric Research)-HTAP (Hemispheric Transport of Air Pollution) v2.2 emissions data (FMB = − 0.80 to − 0.70). Despite the large negative bias, the spatial correlations between model and observed NO 2 columns suggest that the spatial pattern of NO x sources in the region is well represented. Scaling transport and energy emissions in the ECLIPSE v5a inventory by a factor of 2 reduces column NO 2 bias (FMB = − 0.66 to − 0.35), but with overestimates in some urban regions and little change to a persistent underestimate in background regions. Based on the scaled ECLIPSE v5a emissions, we assess the influence of the two dominant anthropogenic emission sectors (transport and energy) and vegetation fires on surface NO x and ozone over Siberia and the Russian Arctic. Our results suggest regional ozone is more sensitive to anthropogenic emissions, particularly from the transport sector, and the contribution from fire emissions maximises in June and is largely confined to latitudes ... Article in Journal/Newspaper Arctic Siberia Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 21 6 4677 4697 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 T. Thorp S. R. Arnold R. J. Pope D. V. Spracklen L. Conibear C. Knote M. Arshinov B. Belan E. Asmi T. Laurila A. I. Skorokhod T. Nieminen T. Petäjä Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We use a regional chemistry transport model (Weather Research and Forecasting model coupled with chemistry, WRF-Chem) in conjunction with surface observations of tropospheric ozone and Ozone Monitoring Instrument (OMI) satellite retrievals of tropospheric column NO 2 to evaluate processes controlling the regional distribution of tropospheric ozone over western Siberia for late spring and summer in 2011. This region hosts a range of anthropogenic and natural ozone precursor sources, and it serves as a gateway for near-surface transport of Eurasian pollution to the Arctic. However, there is a severe lack of in situ observations to constrain tropospheric ozone sources and sinks in the region. We show widespread negative bias in WRF-Chem tropospheric column NO 2 when compared to OMI satellite observations from May–August, which is reduced when using ECLIPSE (Evaluating the Climate and Air Quality Impacts of Short-Lived Pollutants) v5a emissions (fractional mean bias (FMB) = − 0.82 to − 0.73) compared with the EDGAR (Emissions Database for Global Atmospheric Research)-HTAP (Hemispheric Transport of Air Pollution) v2.2 emissions data (FMB = − 0.80 to − 0.70). Despite the large negative bias, the spatial correlations between model and observed NO 2 columns suggest that the spatial pattern of NO x sources in the region is well represented. Scaling transport and energy emissions in the ECLIPSE v5a inventory by a factor of 2 reduces column NO 2 bias (FMB = − 0.66 to − 0.35), but with overestimates in some urban regions and little change to a persistent underestimate in background regions. Based on the scaled ECLIPSE v5a emissions, we assess the influence of the two dominant anthropogenic emission sectors (transport and energy) and vegetation fires on surface NO x and ozone over Siberia and the Russian Arctic. Our results suggest regional ozone is more sensitive to anthropogenic emissions, particularly from the transport sector, and the contribution from fire emissions maximises in June and is largely confined to latitudes ... |
format |
Article in Journal/Newspaper |
author |
T. Thorp S. R. Arnold R. J. Pope D. V. Spracklen L. Conibear C. Knote M. Arshinov B. Belan E. Asmi T. Laurila A. I. Skorokhod T. Nieminen T. Petäjä |
author_facet |
T. Thorp S. R. Arnold R. J. Pope D. V. Spracklen L. Conibear C. Knote M. Arshinov B. Belan E. Asmi T. Laurila A. I. Skorokhod T. Nieminen T. Petäjä |
author_sort |
T. Thorp |
title |
Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities |
title_short |
Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities |
title_full |
Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities |
title_fullStr |
Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities |
title_full_unstemmed |
Late-spring and summertime tropospheric ozone and NO 2 in western Siberia and the Russian Arctic: regional model evaluation and sensitivities |
title_sort |
late-spring and summertime tropospheric ozone and no 2 in western siberia and the russian arctic: regional model evaluation and sensitivities |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/acp-21-4677-2021 https://doaj.org/article/ca5de892c1dd409fa0888044bef16fba |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Siberia |
genre_facet |
Arctic Siberia |
op_source |
Atmospheric Chemistry and Physics, Vol 21, Pp 4677-4697 (2021) |
op_relation |
https://acp.copernicus.org/articles/21/4677/2021/acp-21-4677-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-4677-2021 1680-7316 1680-7324 https://doaj.org/article/ca5de892c1dd409fa0888044bef16fba |
op_doi |
https://doi.org/10.5194/acp-21-4677-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
6 |
container_start_page |
4677 |
op_container_end_page |
4697 |
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1766328760323276800 |