Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean
The Arctic Ocean is continuously warming, resulting in sea ice retreat, which significantly impacts the marine biogenic sulfur cycle. The formation of aerosols from DMS oxidation and their climatic effects in the polar regions are of great concern. However, the impact of DMS chemistry on atmospheric...
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ftcopernicus:oai:publications.copernicus.org:acpd104790 2023-05-15T14:51:11+02:00 Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean Zhang, Miming Yan, Jinpei Lin, Qi Zheng, Hongguo Park, Keyhong Zhao, Shuhui Xu, Suqing Ruan, Meina Wang, Shanshan Zhong, Xinlin Zhao, Suli 2022-07-18 application/pdf https://doi.org/10.5194/acp-2022-454 https://acp.copernicus.org/preprints/acp-2022-454/ eng eng doi:10.5194/acp-2022-454 https://acp.copernicus.org/preprints/acp-2022-454/ eISSN: 1680-7324 Text 2022 ftcopernicus https://doi.org/10.5194/acp-2022-454 2022-07-25T16:22:42Z The Arctic Ocean is continuously warming, resulting in sea ice retreat, which significantly impacts the marine biogenic sulfur cycle. The formation of aerosols from DMS oxidation and their climatic effects in the polar regions are of great concern. However, the impact of DMS chemistry on atmospheric aerosols in the high Arctic Ocean (AO) is still unclear due to the limitation of field observations and datasets. Gaseous methanesulfonic acid (MSA) and aerosol chemical species (MSA, SO 4 2- and DMA, etc.) were determined simultaneously with a high time resolution (1 hour) in the AO and Pacific Ocean (PO) to reveal the DMS chemistry in these regions. Extremely low MSA concentrations were observed in the high AO (75°–85° N), with an average of only 7.42 ± 6.60 ng•m -3 . However, high MSA concentrations, with an average of 168.60 ± 167.60 ng•m -3 were observed in the mid-latitude regions (45°–60° N). Sea salt aerosols were the most dominant source in the high Arctic Ocean, accounting for 88.78 % of the total aerosols, which was much larger than the values in the other regions. The MSA fraction was much lower in the high latitude regions than in the other regions, accounting for only 1.61 % of the total aerosol particles. The latitudinal distribution of MSA was consistent with that of DMS over the AO. Low DMS chemistry was determined based on the low DMS emissions in the HL region. These results highlight the contribution of DMS chemistry to atmospheric aerosols and extend the knowledge of how biogenic aerosols impact the regional atmosphere in the high AO. Text Arctic Arctic Ocean Sea ice Copernicus Publications: E-Journals Arctic Arctic Ocean Pacific |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
The Arctic Ocean is continuously warming, resulting in sea ice retreat, which significantly impacts the marine biogenic sulfur cycle. The formation of aerosols from DMS oxidation and their climatic effects in the polar regions are of great concern. However, the impact of DMS chemistry on atmospheric aerosols in the high Arctic Ocean (AO) is still unclear due to the limitation of field observations and datasets. Gaseous methanesulfonic acid (MSA) and aerosol chemical species (MSA, SO 4 2- and DMA, etc.) were determined simultaneously with a high time resolution (1 hour) in the AO and Pacific Ocean (PO) to reveal the DMS chemistry in these regions. Extremely low MSA concentrations were observed in the high AO (75°–85° N), with an average of only 7.42 ± 6.60 ng•m -3 . However, high MSA concentrations, with an average of 168.60 ± 167.60 ng•m -3 were observed in the mid-latitude regions (45°–60° N). Sea salt aerosols were the most dominant source in the high Arctic Ocean, accounting for 88.78 % of the total aerosols, which was much larger than the values in the other regions. The MSA fraction was much lower in the high latitude regions than in the other regions, accounting for only 1.61 % of the total aerosol particles. The latitudinal distribution of MSA was consistent with that of DMS over the AO. Low DMS chemistry was determined based on the low DMS emissions in the HL region. These results highlight the contribution of DMS chemistry to atmospheric aerosols and extend the knowledge of how biogenic aerosols impact the regional atmosphere in the high AO. |
format |
Text |
author |
Zhang, Miming Yan, Jinpei Lin, Qi Zheng, Hongguo Park, Keyhong Zhao, Shuhui Xu, Suqing Ruan, Meina Wang, Shanshan Zhong, Xinlin Zhao, Suli |
spellingShingle |
Zhang, Miming Yan, Jinpei Lin, Qi Zheng, Hongguo Park, Keyhong Zhao, Shuhui Xu, Suqing Ruan, Meina Wang, Shanshan Zhong, Xinlin Zhao, Suli Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean |
author_facet |
Zhang, Miming Yan, Jinpei Lin, Qi Zheng, Hongguo Park, Keyhong Zhao, Shuhui Xu, Suqing Ruan, Meina Wang, Shanshan Zhong, Xinlin Zhao, Suli |
author_sort |
Zhang, Miming |
title |
Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean |
title_short |
Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean |
title_full |
Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean |
title_fullStr |
Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean |
title_full_unstemmed |
Low contributions of dimethyl sulfide (DMS) chemistry to atmospheric aerosols over the high Arctic Ocean |
title_sort |
low contributions of dimethyl sulfide (dms) chemistry to atmospheric aerosols over the high arctic ocean |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-2022-454 https://acp.copernicus.org/preprints/acp-2022-454/ |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-2022-454 https://acp.copernicus.org/preprints/acp-2022-454/ |
op_doi |
https://doi.org/10.5194/acp-2022-454 |
_version_ |
1766322240557678592 |