Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes
The northern high latitudes (50–90° N, mostly including boreal-forest and tundra ecosystems) have been undergoing rapid climate and ecological changes over recent decades, leading to significant variations in volatile organic compounds (VOC) emissions from biogenic and biomass burning sources. Forma...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00073876 2024-06-23T07:57:19+00:00 Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes Zhao, Tianlang Mao, Jingqiu Ayazpour, Zolal González Abad, Gonzalo Nowlan, Caroline R. Zheng, Yiqi 2024-05 electronic https://doi.org/10.5194/acp-24-6105-2024 https://noa.gwlb.de/receive/cop_mods_00073876 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072016/acp-24-6105-2024.pdf https://acp.copernicus.org/articles/24/6105/2024/acp-24-6105-2024.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-6105-2024 https://noa.gwlb.de/receive/cop_mods_00073876 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072016/acp-24-6105-2024.pdf https://acp.copernicus.org/articles/24/6105/2024/acp-24-6105-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/acp-24-6105-2024 2024-06-03T23:38:30Z The northern high latitudes (50–90° N, mostly including boreal-forest and tundra ecosystems) have been undergoing rapid climate and ecological changes over recent decades, leading to significant variations in volatile organic compounds (VOC) emissions from biogenic and biomass burning sources. Formaldehyde (HCHO) is an indicator of VOC emissions, but the interannual variability of HCHO and its main drivers over the region remains unclear. In this study, we use the GEOS-Chem chemical transport model and satellite retrievals from the Ozone Monitoring Instrument (OMI) and the Ozone Mapping and Profiler Suite (OMPS) to examine the interannual variability of HCHO vertical column density (VCD) during the summer seasons spanning from 2005 to 2019. Our results show that, in 2005–2019 summers, wildfires contributed 75 %–90 % of the interannual variability of HCHO VCD over Siberia, Alaska and northern Canada, while biogenic emissions and background methane oxidation account for ∼ 90 % of HCHO interannual variability over eastern Europe. We find that monthly solar-induced chlorophyll fluorescence (SIF) from the Orbiting Carbon Observatory-2 (OCO-2), an efficient proxy for plant photosynthesis, shows a good linear relationship (R= 0.6–0.7) with the modeled biogenic HCHO column (dVCDBio,GC) in eastern Europe, Siberia, Alaska and northern Canada, indicating the coupling between SIF and biogenic VOC emissions over the four domains on a monthly scale. In Alaska, Siberia and northern Canada, SIF and dVCDBio,GC both show relatively lower interannual variabilities (SIF: CV = 1 %–9 %, dVCDBio,GC: CV = 1 %–2 %; note that CV stands for coefficient of variation) in comparison to wildfire-induced HCHO (CV = 8 %–13 %), suggesting that the high interannual variabilities of OMI HCHO VCD (CV = 10 %–16 %) in these domains are likely driven by wildfires instead of biogenic emissions. Article in Journal/Newspaper Tundra Alaska Siberia Niedersächsisches Online-Archiv NOA Canada Atmospheric Chemistry and Physics 24 10 6105 6121 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Zhao, Tianlang Mao, Jingqiu Ayazpour, Zolal González Abad, Gonzalo Nowlan, Caroline R. Zheng, Yiqi Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes |
topic_facet |
article Verlagsveröffentlichung |
description |
The northern high latitudes (50–90° N, mostly including boreal-forest and tundra ecosystems) have been undergoing rapid climate and ecological changes over recent decades, leading to significant variations in volatile organic compounds (VOC) emissions from biogenic and biomass burning sources. Formaldehyde (HCHO) is an indicator of VOC emissions, but the interannual variability of HCHO and its main drivers over the region remains unclear. In this study, we use the GEOS-Chem chemical transport model and satellite retrievals from the Ozone Monitoring Instrument (OMI) and the Ozone Mapping and Profiler Suite (OMPS) to examine the interannual variability of HCHO vertical column density (VCD) during the summer seasons spanning from 2005 to 2019. Our results show that, in 2005–2019 summers, wildfires contributed 75 %–90 % of the interannual variability of HCHO VCD over Siberia, Alaska and northern Canada, while biogenic emissions and background methane oxidation account for ∼ 90 % of HCHO interannual variability over eastern Europe. We find that monthly solar-induced chlorophyll fluorescence (SIF) from the Orbiting Carbon Observatory-2 (OCO-2), an efficient proxy for plant photosynthesis, shows a good linear relationship (R= 0.6–0.7) with the modeled biogenic HCHO column (dVCDBio,GC) in eastern Europe, Siberia, Alaska and northern Canada, indicating the coupling between SIF and biogenic VOC emissions over the four domains on a monthly scale. In Alaska, Siberia and northern Canada, SIF and dVCDBio,GC both show relatively lower interannual variabilities (SIF: CV = 1 %–9 %, dVCDBio,GC: CV = 1 %–2 %; note that CV stands for coefficient of variation) in comparison to wildfire-induced HCHO (CV = 8 %–13 %), suggesting that the high interannual variabilities of OMI HCHO VCD (CV = 10 %–16 %) in these domains are likely driven by wildfires instead of biogenic emissions. |
format |
Article in Journal/Newspaper |
author |
Zhao, Tianlang Mao, Jingqiu Ayazpour, Zolal González Abad, Gonzalo Nowlan, Caroline R. Zheng, Yiqi |
author_facet |
Zhao, Tianlang Mao, Jingqiu Ayazpour, Zolal González Abad, Gonzalo Nowlan, Caroline R. Zheng, Yiqi |
author_sort |
Zhao, Tianlang |
title |
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes |
title_short |
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes |
title_full |
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes |
title_fullStr |
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes |
title_full_unstemmed |
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes |
title_sort |
interannual variability of summertime formaldehyde (hcho) vertical column density and its main drivers at northern high latitudes |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/acp-24-6105-2024 https://noa.gwlb.de/receive/cop_mods_00073876 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072016/acp-24-6105-2024.pdf https://acp.copernicus.org/articles/24/6105/2024/acp-24-6105-2024.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Tundra Alaska Siberia |
genre_facet |
Tundra Alaska Siberia |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-6105-2024 https://noa.gwlb.de/receive/cop_mods_00073876 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072016/acp-24-6105-2024.pdf https://acp.copernicus.org/articles/24/6105/2024/acp-24-6105-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-24-6105-2024 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
24 |
container_issue |
10 |
container_start_page |
6105 |
op_container_end_page |
6121 |
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1802650886324879360 |