Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing
We use a global chemical transport model (GEOS-Chem CTM) to interpret observations of black carbon (BC) and organic aerosol (OA) from the NASA ARCTAS aircraft campaign over the North American Arctic in April 2008, as well as longer-term records in surface air and in snow (2007-2009). BC emission inv...
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ftunivwollongong:oai:ro.uow.edu.au:scipapers-8031 2023-05-15T13:11:04+02:00 Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing Wang, Q Jacob, D J Fisher, J A Mao, J Leibensperger, E M Carouge, C C Le Sager, P Kondo, Y Jimenez, J L Cubison, M J Doherty, S J 2011-01-01T08:00:00Z application/pdf https://ro.uow.edu.au/scipapers/4688 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=8031&context=scipapers unknown Research Online https://ro.uow.edu.au/scipapers/4688 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=8031&context=scipapers Faculty of Science - Papers (Archive) spring implications aerosols radiative sources forcing deposited black carbon carbonaceous arctic winter Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences article 2011 ftunivwollongong 2020-02-25T10:54:40Z We use a global chemical transport model (GEOS-Chem CTM) to interpret observations of black carbon (BC) and organic aerosol (OA) from the NASA ARCTAS aircraft campaign over the North American Arctic in April 2008, as well as longer-term records in surface air and in snow (2007-2009). BC emission inventories for North America, Europe, and Asia in the model are tested by comparison with surface air observations over these source regions. Russian open fires were the dominant source of OA in the Arctic troposphere during ARCTAS but we find that BC was of prevailingly anthropogenic (fossil fuel and biofuel) origin, particularly in surface air. This source attribution is confirmed by correlation of BC and OA with acetonitrile and sulfate in the model and in the observations. Asian emissions are the main anthropogenic source of BC in the free troposphere but European, Russian and North American sources are also important in surface air. Russian anthropogenic emissions appear to dominate the source of BC in Arctic surface air in winter. Model simulations for 2007-2009 (to account for interannual variability of fires) show much higher BC snow content in the Eurasian than the North American Arctic, consistent with the limited observations. We find that anthropogenic sources contribute 90% of BC deposited to Arctic snow in January-March and 60% in April-May 2007-2009. The mean decrease in Arctic snow albedo from BC deposition is estimated to be 0.6% in spring, resulting in a regional surface radiative forcing consistent with previous estimates. Article in Journal/Newspaper albedo Arctic black carbon University of Wollongong, Australia: Research Online Arctic |
institution |
Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
spring implications aerosols radiative sources forcing deposited black carbon carbonaceous arctic winter Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences |
spellingShingle |
spring implications aerosols radiative sources forcing deposited black carbon carbonaceous arctic winter Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences Wang, Q Jacob, D J Fisher, J A Mao, J Leibensperger, E M Carouge, C C Le Sager, P Kondo, Y Jimenez, J L Cubison, M J Doherty, S J Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing |
topic_facet |
spring implications aerosols radiative sources forcing deposited black carbon carbonaceous arctic winter Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences |
description |
We use a global chemical transport model (GEOS-Chem CTM) to interpret observations of black carbon (BC) and organic aerosol (OA) from the NASA ARCTAS aircraft campaign over the North American Arctic in April 2008, as well as longer-term records in surface air and in snow (2007-2009). BC emission inventories for North America, Europe, and Asia in the model are tested by comparison with surface air observations over these source regions. Russian open fires were the dominant source of OA in the Arctic troposphere during ARCTAS but we find that BC was of prevailingly anthropogenic (fossil fuel and biofuel) origin, particularly in surface air. This source attribution is confirmed by correlation of BC and OA with acetonitrile and sulfate in the model and in the observations. Asian emissions are the main anthropogenic source of BC in the free troposphere but European, Russian and North American sources are also important in surface air. Russian anthropogenic emissions appear to dominate the source of BC in Arctic surface air in winter. Model simulations for 2007-2009 (to account for interannual variability of fires) show much higher BC snow content in the Eurasian than the North American Arctic, consistent with the limited observations. We find that anthropogenic sources contribute 90% of BC deposited to Arctic snow in January-March and 60% in April-May 2007-2009. The mean decrease in Arctic snow albedo from BC deposition is estimated to be 0.6% in spring, resulting in a regional surface radiative forcing consistent with previous estimates. |
format |
Article in Journal/Newspaper |
author |
Wang, Q Jacob, D J Fisher, J A Mao, J Leibensperger, E M Carouge, C C Le Sager, P Kondo, Y Jimenez, J L Cubison, M J Doherty, S J |
author_facet |
Wang, Q Jacob, D J Fisher, J A Mao, J Leibensperger, E M Carouge, C C Le Sager, P Kondo, Y Jimenez, J L Cubison, M J Doherty, S J |
author_sort |
Wang, Q |
title |
Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing |
title_short |
Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing |
title_full |
Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing |
title_fullStr |
Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing |
title_full_unstemmed |
Sources of carbonaceous aerosols and deposited black carbon in the Arctic in winter-spring: Implications for radiative forcing |
title_sort |
sources of carbonaceous aerosols and deposited black carbon in the arctic in winter-spring: implications for radiative forcing |
publisher |
Research Online |
publishDate |
2011 |
url |
https://ro.uow.edu.au/scipapers/4688 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=8031&context=scipapers |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic black carbon |
genre_facet |
albedo Arctic black carbon |
op_source |
Faculty of Science - Papers (Archive) |
op_relation |
https://ro.uow.edu.au/scipapers/4688 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=8031&context=scipapers |
_version_ |
1766245817547489280 |