Historical black carbon deposition in the Canadian High Arctic : A >250-year long ice-core record from Devon Island
Black carbon aerosol (BC) 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, thus lowering their albedo. Modeling the atmospheric transport and deposition of BC to the...
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Uppsala universitet, Luft-, vatten- och landskapslära
2018
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ftuppsalauniv:oai:DiVA.org:uu-330381 2023-05-15T13:10:56+02:00 Historical black carbon deposition in the Canadian High Arctic : A >250-year long ice-core record from Devon Island Zdanowicz, Christian Proemse, Bernadette Edwards, Ross Freiteng, Wang Hogan, Chad Kinnard, Christophe Fisher, David 2018 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-330381 https://doi.org/10.5194/acp-18-12345-2018 eng eng Uppsala universitet, Luft-, vatten- och landskapslära University of Tasmania Curtin University of Technology, Australia Chinese Academy of Sciences Université du Québec à Trois-Rivières University of Ottawa Copernicus Publications Atmospheric Chemistry And Physics, 1680-7316, 2018, 18, s. 12345-12361 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-330381 doi:10.5194/acp-18-12345-2018 ISI:000442775100002 info:eu-repo/semantics/openAccess Arctic snow ice black carbon atmosphere Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2018 ftuppsalauniv https://doi.org/10.5194/acp-18-12345-2018 2023-02-23T21:52:13Z Black carbon aerosol (BC) 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, thus lowering their albedo. Modeling the atmospheric transport and deposition of BC to the Arctic is therefore important, and historical archives of BC accumulation in polar ice can help to validate such modeling efforts. Here we present a 190-year ice-core record of refractory BC (rBC) deposition on Devon ice cap, Canada, spanning calendar years 1810-1990, 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 low compared to most Greenland ice-core sites over the same period. The Devon ice cap rBC record also differs from existing Greenland records in that it shows no evidence of a substantial increase in rBC deposition during the early-mid 20th century, which, for Greenland, has been attributed to mid-latitude coal burning emissions. The deposition of other contaminants such as sulfate and Pb increased on Devon ice cap in the 20th century but without a concomitant rise in rBC. Part of the difference with Greenland may be due to local factors such as wind scouring of winter snow at the coring site on Devon ice cap. 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 underscore the large variability in BC aerosol deposition across the Arctic region that may arise 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 core Ice cap ice core Uppsala University: Publications (DiVA) Arctic Arctic Ocean Canada Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Greenland Atmospheric Chemistry and Physics 18 16 12345 12361 |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Arctic snow ice black carbon atmosphere Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
spellingShingle |
Arctic snow ice black carbon atmosphere Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Zdanowicz, Christian Proemse, Bernadette Edwards, Ross Freiteng, Wang Hogan, Chad 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 |
Arctic snow ice black carbon atmosphere Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
description |
Black carbon aerosol (BC) 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, thus lowering their albedo. Modeling the atmospheric transport and deposition of BC to the Arctic is therefore important, and historical archives of BC accumulation in polar ice can help to validate such modeling efforts. Here we present a 190-year ice-core record of refractory BC (rBC) deposition on Devon ice cap, Canada, spanning calendar years 1810-1990, 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 low compared to most Greenland ice-core sites over the same period. The Devon ice cap rBC record also differs from existing Greenland records in that it shows no evidence of a substantial increase in rBC deposition during the early-mid 20th century, which, for Greenland, has been attributed to mid-latitude coal burning emissions. The deposition of other contaminants such as sulfate and Pb increased on Devon ice cap in the 20th century but without a concomitant rise in rBC. Part of the difference with Greenland may be due to local factors such as wind scouring of winter snow at the coring site on Devon ice cap. 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 underscore the large variability in BC aerosol deposition across the Arctic region that may arise 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 Proemse, Bernadette Edwards, Ross Freiteng, Wang Hogan, Chad Kinnard, Christophe Fisher, David |
author_facet |
Zdanowicz, Christian Proemse, Bernadette Edwards, Ross Freiteng, Wang Hogan, Chad Kinnard, Christophe Fisher, David |
author_sort |
Zdanowicz, Christian |
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 |
Uppsala universitet, Luft-, vatten- och landskapslära |
publishDate |
2018 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-330381 https://doi.org/10.5194/acp-18-12345-2018 |
long_lat |
ENVELOPE(-82.499,-82.499,75.335,75.335) ENVELOPE(-88.000,-88.000,75.252,75.252) |
geographic |
Arctic Arctic Ocean Canada Devon Ice Cap Devon Island Greenland |
geographic_facet |
Arctic Arctic Ocean Canada Devon Ice Cap Devon Island Greenland |
genre |
albedo Arctic Arctic Ocean black carbon Devon Island Greenland Greenland ice core Ice cap ice core |
genre_facet |
albedo Arctic Arctic Ocean black carbon Devon Island Greenland Greenland ice core Ice cap ice core |
op_relation |
Atmospheric Chemistry And Physics, 1680-7316, 2018, 18, s. 12345-12361 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-330381 doi:10.5194/acp-18-12345-2018 ISI:000442775100002 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
_version_ |
1766245279000952832 |