Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island
Black carbon aerosol (BC), which is emitted from natural and anthropogenic sources (e.g., wildfires, coal burning), can contribute to magnify climate warming at high latitudes by darkening snow- and ice-covered surfaces, and subsequently lowering their albedo. Therefore, modeling the atmospheric tra...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00041535 2023-05-15T13:11:06+02:00 Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island Zdanowicz, Christian M. Proemse, Bernadette C. Edwards, Ross Feiteng, Wang Hogan, Chad M. Kinnard, Christophe Fisher, David 2018-08 electronic https://doi.org/10.5194/acp-18-12345-2018 https://noa.gwlb.de/receive/cop_mods_00041535 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041155/acp-18-12345-2018.pdf https://acp.copernicus.org/articles/18/12345/2018/acp-18-12345-2018.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-18-12345-2018 https://noa.gwlb.de/receive/cop_mods_00041535 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041155/acp-18-12345-2018.pdf https://acp.copernicus.org/articles/18/12345/2018/acp-18-12345-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/acp-18-12345-2018 2022-02-08T22:41:32Z Black carbon aerosol (BC), which is emitted from natural and anthropogenic sources (e.g., wildfires, coal burning), can contribute to magnify climate warming at high latitudes by darkening snow- and ice-covered surfaces, and subsequently lowering their albedo. Therefore, modeling the atmospheric transport and deposition of BC to the Arctic is important, and historical archives of BC accumulation in polar ice can help to validate such modeling efforts. Here we present a > 250-year ice-core record of refractory BC (rBC) deposition on Devon ice cap, Canada, spanning the years from 1735 to 1992. This is the first such record ever developed from the Canadian Arctic. The estimated mean deposition flux of rBC on Devon ice cap for 1963–1990 is 0.2 mg m−2 a−1, which is at the low end of estimates from Greenland ice cores obtained using the same analytical method ( ∼ 0.1–4 mg m−2 a−1). The Devon ice cap rBC record also differs from the Greenland records in that it shows only a modest increase in rBC deposition during the 20th century. In the Greenland records a pronounced rise in rBC is observed from the 1880s to the 1910s, which is largely attributed to midlatitude coal burning emissions. The deposition of contaminants such as sulfate and lead increased on Devon ice cap in the 20th century but no concomitant rise in rBC is recorded in the ice. Part of the difference with Greenland could be due to local factors such as melt–freeze cycles on Devon ice cap that may limit the detection sensitivity of rBC analyses in melt-impacted core samples, and wind scouring of winter snow at the coring site. Air back-trajectory analyses also suggest that Devon ice cap receives BC from more distant North American and Eurasian sources than Greenland, and aerosol mixing and removal during long-range transport over the Arctic Ocean likely masks some of the specific BC source–receptor relationships. Findings from this study suggest that there could be a large variability in BC aerosol deposition across the Arctic region arising from different transport patterns. This variability needs to be accounted for when estimating the large-scale albedo lowering effect of BC deposition on Arctic snow/ice. Article in Journal/Newspaper albedo Arctic Arctic Ocean black carbon Devon Island Greenland Greenland ice cores Ice cap ice core Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean Canada Greenland Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) Atmospheric Chemistry and Physics 18 16 12345 12361 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Zdanowicz, Christian M. Proemse, Bernadette C. Edwards, Ross Feiteng, Wang Hogan, Chad M. Kinnard, Christophe Fisher, David Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island |
topic_facet |
article Verlagsveröffentlichung |
description |
Black carbon aerosol (BC), which is emitted from natural and anthropogenic sources (e.g., wildfires, coal burning), can contribute to magnify climate warming at high latitudes by darkening snow- and ice-covered surfaces, and subsequently lowering their albedo. Therefore, modeling the atmospheric transport and deposition of BC to the Arctic is important, and historical archives of BC accumulation in polar ice can help to validate such modeling efforts. Here we present a > 250-year ice-core record of refractory BC (rBC) deposition on Devon ice cap, Canada, spanning the years from 1735 to 1992. This is the first such record ever developed from the Canadian Arctic. The estimated mean deposition flux of rBC on Devon ice cap for 1963–1990 is 0.2 mg m−2 a−1, which is at the low end of estimates from Greenland ice cores obtained using the same analytical method ( ∼ 0.1–4 mg m−2 a−1). The Devon ice cap rBC record also differs from the Greenland records in that it shows only a modest increase in rBC deposition during the 20th century. In the Greenland records a pronounced rise in rBC is observed from the 1880s to the 1910s, which is largely attributed to midlatitude coal burning emissions. The deposition of contaminants such as sulfate and lead increased on Devon ice cap in the 20th century but no concomitant rise in rBC is recorded in the ice. Part of the difference with Greenland could be due to local factors such as melt–freeze cycles on Devon ice cap that may limit the detection sensitivity of rBC analyses in melt-impacted core samples, and wind scouring of winter snow at the coring site. Air back-trajectory analyses also suggest that Devon ice cap receives BC from more distant North American and Eurasian sources than Greenland, and aerosol mixing and removal during long-range transport over the Arctic Ocean likely masks some of the specific BC source–receptor relationships. Findings from this study suggest that there could be a large variability in BC aerosol deposition across the Arctic region arising from different transport patterns. This variability needs to be accounted for when estimating the large-scale albedo lowering effect of BC deposition on Arctic snow/ice. |
format |
Article in Journal/Newspaper |
author |
Zdanowicz, Christian M. Proemse, Bernadette C. Edwards, Ross Feiteng, Wang Hogan, Chad M. Kinnard, Christophe Fisher, David |
author_facet |
Zdanowicz, Christian M. Proemse, Bernadette C. Edwards, Ross Feiteng, Wang Hogan, Chad M. Kinnard, Christophe Fisher, David |
author_sort |
Zdanowicz, Christian M. |
title |
Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island |
title_short |
Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island |
title_full |
Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island |
title_fullStr |
Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island |
title_full_unstemmed |
Historical black carbon deposition in the Canadian High Arctic: a >250-year long ice-core record from Devon Island |
title_sort |
historical black carbon deposition in the canadian high arctic: a >250-year long ice-core record from devon island |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-18-12345-2018 https://noa.gwlb.de/receive/cop_mods_00041535 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041155/acp-18-12345-2018.pdf https://acp.copernicus.org/articles/18/12345/2018/acp-18-12345-2018.pdf |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) ENVELOPE(-82.499,-82.499,75.335,75.335) |
geographic |
Arctic Arctic Ocean Canada Greenland Devon Island Devon Ice Cap |
geographic_facet |
Arctic Arctic Ocean Canada Greenland Devon Island Devon Ice Cap |
genre |
albedo Arctic Arctic Ocean black carbon Devon Island Greenland Greenland ice cores Ice cap ice core |
genre_facet |
albedo Arctic Arctic Ocean black carbon Devon Island Greenland Greenland ice cores Ice cap ice core |
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-18-12345-2018 https://noa.gwlb.de/receive/cop_mods_00041535 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041155/acp-18-12345-2018.pdf https://acp.copernicus.org/articles/18/12345/2018/acp-18-12345-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-18-12345-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
16 |
container_start_page |
12345 |
op_container_end_page |
12361 |
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1766245941221785600 |