Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories
Even though the Arctic is remote, aerosol properties observed there are strongly influenced by anthropogenic emissions from outside the Arctic. This is particularly true for the so-called Arctic haze season (January through April). In summer (June through September), when atmospheric transport patte...
Published in: | Atmospheric Chemistry and Physics |
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2022
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Online Access: | https://pure.au.dk/portal/en/publications/c0a7704c-dbe1-4d35-be8c-d2508e4b66b2 https://doi.org/10.5194/acp-22-3067-2022 http://www.scopus.com/inward/record.url?scp=85126740799&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/c0a7704c-dbe1-4d35-be8c-d2508e4b66b2 2024-04-28T07:53:38+00:00 Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories Schmale, Julia Sharma, Sangeeta Decesari, Stefano Pernov, Jakob Massling, Andreas Hansson, Hans Christen Von Salzen, Knut Skov, Henrik Andrews, Elisabeth Quinn, Patricia K. Upchurch, Lucia M. Eleftheriadis, Konstantinos Traversi, Rita Gilardoni, Stefania Mazzola, Mauro Laing, James Hopke, Philip 2022-03 https://pure.au.dk/portal/en/publications/c0a7704c-dbe1-4d35-be8c-d2508e4b66b2 https://doi.org/10.5194/acp-22-3067-2022 http://www.scopus.com/inward/record.url?scp=85126740799&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/c0a7704c-dbe1-4d35-be8c-d2508e4b66b2 info:eu-repo/semantics/openAccess Schmale , J , Sharma , S , Decesari , S , Pernov , J , Massling , A , Hansson , H C , Von Salzen , K , Skov , H , Andrews , E , Quinn , P K , Upchurch , L M , Eleftheriadis , K , Traversi , R , Gilardoni , S , Mazzola , M , Laing , J & Hopke , P 2022 , ' Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories ' , Atmospheric Chemistry and Physics , vol. 22 , no. 5 , pp. 3067-3096 . https://doi.org/10.5194/acp-22-3067-2022 article 2022 ftuniaarhuspubl https://doi.org/10.5194/acp-22-3067-2022 2024-04-04T16:56:01Z Even though the Arctic is remote, aerosol properties observed there are strongly influenced by anthropogenic emissions from outside the Arctic. This is particularly true for the so-called Arctic haze season (January through April). In summer (June through September), when atmospheric transport patterns change, and precipitation is more frequent, local Arctic sources, i.e., natural sources of aerosols and precursors, play an important role. Over the last few decades, significant reductions in anthropogenic emissions have taken place. At the same time a large body of literature shows evidence that the Arctic is undergoing fundamental environmental changes due to climate forcing, leading to enhanced emissions by natural processes that may impact aerosol properties. In this study, we analyze 9 aerosol chemical species and 4 particle optical properties from 10 Arctic observatories (Alert, Kevo, Pallas, Summit, Thule, Tiksi, Barrow/Utqiaġvik, Villum, and Gruvebadet and Zeppelin Observatory - both at Ny-Ålesund Research Station) to understand changes in anthropogenic and natural aerosol contributions. Variables include equivalent black carbon, particulate sulfate, nitrate, ammonium, methanesulfonic acid, sodium, iron, calcium and potassium, as well as scattering and absorption coefficients, single scattering albedo and scattering Ångström exponent. First, annual cycles are investigated, which despite anthropogenic emission reductions still show the Arctic haze phenomenon. Second, long-term trends are studied using the Mann-Kendall Theil-Sen slope method. We find in total 41 significant trends over full station records, i.e., spanning more than a decade, compared to 26 significant decadal trends. The majority of significantly declining trends is from anthropogenic tracers and occurred during the haze period, driven by emission changes between 1990 and 2000. For the summer period, no uniform picture of trends has emerged. Twenty-six percent of trends, i.e., 19 out of 73, are significant, and of those 5 are positive and ... Article in Journal/Newspaper albedo Arctic Arctic black carbon Ny Ålesund Ny-Ålesund Tiksi Aarhus University: Research Atmospheric Chemistry and Physics 22 5 3067 3096 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
Even though the Arctic is remote, aerosol properties observed there are strongly influenced by anthropogenic emissions from outside the Arctic. This is particularly true for the so-called Arctic haze season (January through April). In summer (June through September), when atmospheric transport patterns change, and precipitation is more frequent, local Arctic sources, i.e., natural sources of aerosols and precursors, play an important role. Over the last few decades, significant reductions in anthropogenic emissions have taken place. At the same time a large body of literature shows evidence that the Arctic is undergoing fundamental environmental changes due to climate forcing, leading to enhanced emissions by natural processes that may impact aerosol properties. In this study, we analyze 9 aerosol chemical species and 4 particle optical properties from 10 Arctic observatories (Alert, Kevo, Pallas, Summit, Thule, Tiksi, Barrow/Utqiaġvik, Villum, and Gruvebadet and Zeppelin Observatory - both at Ny-Ålesund Research Station) to understand changes in anthropogenic and natural aerosol contributions. Variables include equivalent black carbon, particulate sulfate, nitrate, ammonium, methanesulfonic acid, sodium, iron, calcium and potassium, as well as scattering and absorption coefficients, single scattering albedo and scattering Ångström exponent. First, annual cycles are investigated, which despite anthropogenic emission reductions still show the Arctic haze phenomenon. Second, long-term trends are studied using the Mann-Kendall Theil-Sen slope method. We find in total 41 significant trends over full station records, i.e., spanning more than a decade, compared to 26 significant decadal trends. The majority of significantly declining trends is from anthropogenic tracers and occurred during the haze period, driven by emission changes between 1990 and 2000. For the summer period, no uniform picture of trends has emerged. Twenty-six percent of trends, i.e., 19 out of 73, are significant, and of those 5 are positive and ... |
format |
Article in Journal/Newspaper |
author |
Schmale, Julia Sharma, Sangeeta Decesari, Stefano Pernov, Jakob Massling, Andreas Hansson, Hans Christen Von Salzen, Knut Skov, Henrik Andrews, Elisabeth Quinn, Patricia K. Upchurch, Lucia M. Eleftheriadis, Konstantinos Traversi, Rita Gilardoni, Stefania Mazzola, Mauro Laing, James Hopke, Philip |
spellingShingle |
Schmale, Julia Sharma, Sangeeta Decesari, Stefano Pernov, Jakob Massling, Andreas Hansson, Hans Christen Von Salzen, Knut Skov, Henrik Andrews, Elisabeth Quinn, Patricia K. Upchurch, Lucia M. Eleftheriadis, Konstantinos Traversi, Rita Gilardoni, Stefania Mazzola, Mauro Laing, James Hopke, Philip Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
author_facet |
Schmale, Julia Sharma, Sangeeta Decesari, Stefano Pernov, Jakob Massling, Andreas Hansson, Hans Christen Von Salzen, Knut Skov, Henrik Andrews, Elisabeth Quinn, Patricia K. Upchurch, Lucia M. Eleftheriadis, Konstantinos Traversi, Rita Gilardoni, Stefania Mazzola, Mauro Laing, James Hopke, Philip |
author_sort |
Schmale, Julia |
title |
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
title_short |
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
title_full |
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
title_fullStr |
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
title_full_unstemmed |
Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
title_sort |
pan-arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories |
publishDate |
2022 |
url |
https://pure.au.dk/portal/en/publications/c0a7704c-dbe1-4d35-be8c-d2508e4b66b2 https://doi.org/10.5194/acp-22-3067-2022 http://www.scopus.com/inward/record.url?scp=85126740799&partnerID=8YFLogxK |
genre |
albedo Arctic Arctic black carbon Ny Ålesund Ny-Ålesund Tiksi |
genre_facet |
albedo Arctic Arctic black carbon Ny Ålesund Ny-Ålesund Tiksi |
op_source |
Schmale , J , Sharma , S , Decesari , S , Pernov , J , Massling , A , Hansson , H C , Von Salzen , K , Skov , H , Andrews , E , Quinn , P K , Upchurch , L M , Eleftheriadis , K , Traversi , R , Gilardoni , S , Mazzola , M , Laing , J & Hopke , P 2022 , ' Pan-Arctic seasonal cycles and long-term trends of aerosol properties from 10 observatories ' , Atmospheric Chemistry and Physics , vol. 22 , no. 5 , pp. 3067-3096 . https://doi.org/10.5194/acp-22-3067-2022 |
op_relation |
https://pure.au.dk/portal/en/publications/c0a7704c-dbe1-4d35-be8c-d2508e4b66b2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-22-3067-2022 |
container_title |
Atmospheric Chemistry and Physics |
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22 |
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5 |
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3067 |
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3096 |
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