Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption
Radiative forcing by aerosols and tropospheric ozone could play a significant role in recent Arctic warming. These species are in general poorly accounted for in climate models. We use the GEOS-Chem global chemical transport model to construct a 3-D representation of Arctic aerosols and ozone that i...
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ftharvardudash:oai:dash.harvard.edu:1/14121879 2023-05-15T14:26:31+02:00 Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption Breider, Thomas J. Mickley, Loretta J. Jacob, Daniel James Wang, Qiaoqiao Fisher, Jenny A. Chang, Rachel. Y.-W. Alexander, Becky 2014 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:14121879 https://doi.org/10.1002/2013JD020996 en_US eng Wiley-Blackwell doi:10.1002/2013JD020996 Journal of Geophysical Research: Atmospheres Breider, Thomas J., Loretta J. Mickley, Daniel James Jacob, Qiaoqiao Wang, Jenny A. Fisher, Rachel Y.-W. Chang, and Becky Alexander. 2014. “Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption.” Journal of Geophysical Research: Atmospheres 119 (7): 4107–4124. 2169-897X 2169-8996 http://nrs.harvard.edu/urn-3:HUL.InstRepos:14121879 Arctic AOD black carbon aerosol sulfate near-term Journal Article 2014 ftharvardudash https://doi.org/10.1002/2013JD020996 2022-04-05T06:47:08Z Radiative forcing by aerosols and tropospheric ozone could play a significant role in recent Arctic warming. These species are in general poorly accounted for in climate models. We use the GEOS-Chem global chemical transport model to construct a 3-D representation of Arctic aerosols and ozone that is consistent with observations and can be used in climate simulations. We focus on 2008, when extensive observations were made from different platforms as part of the International Polar Year. Comparison to aircraft, surface, and ship cruise observations suggests that GEOS-Chem provides in general a successful year-round simulation of Arctic black carbon (BC), organic carbon (OC), sulfate, and dust aerosol. BC has major fuel combustion and boreal fire sources, OC is mainly from fires, sulfate has a mix of anthropogenic and natural sources, and dust is mostly from the Sahara. The model is successful in simulating aerosol optical depth (AOD) observations from Aerosol Robotics Network stations in the Arctic; the sharp drop from spring to summer appears driven in part by the smaller size of sulfate aerosol in summer. The anthropogenic contribution to Arctic AOD is a factor of 4 larger in spring than in summer and is mainly sulfate. Simulation of absorbing aerosol optical depth (AAOD) indicates that non-BC aerosol (OC and dust) contributed 24% of Arctic AAOD at 550 nm and 37% of absorbing mass deposited to the snow pack in 2008. Open fires contributed half of AAOD at 550 nm and half of deposition to the snowpack. Engineering and Applied Sciences Version of Record Article in Journal/Newspaper Arctic Arctic black carbon International Polar Year Harvard University: DASH - Digital Access to Scholarship at Harvard Arctic Journal of Geophysical Research: Atmospheres 119 7 4107 4124 |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
topic |
Arctic AOD black carbon aerosol sulfate near-term |
spellingShingle |
Arctic AOD black carbon aerosol sulfate near-term Breider, Thomas J. Mickley, Loretta J. Jacob, Daniel James Wang, Qiaoqiao Fisher, Jenny A. Chang, Rachel. Y.-W. Alexander, Becky Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption |
topic_facet |
Arctic AOD black carbon aerosol sulfate near-term |
description |
Radiative forcing by aerosols and tropospheric ozone could play a significant role in recent Arctic warming. These species are in general poorly accounted for in climate models. We use the GEOS-Chem global chemical transport model to construct a 3-D representation of Arctic aerosols and ozone that is consistent with observations and can be used in climate simulations. We focus on 2008, when extensive observations were made from different platforms as part of the International Polar Year. Comparison to aircraft, surface, and ship cruise observations suggests that GEOS-Chem provides in general a successful year-round simulation of Arctic black carbon (BC), organic carbon (OC), sulfate, and dust aerosol. BC has major fuel combustion and boreal fire sources, OC is mainly from fires, sulfate has a mix of anthropogenic and natural sources, and dust is mostly from the Sahara. The model is successful in simulating aerosol optical depth (AOD) observations from Aerosol Robotics Network stations in the Arctic; the sharp drop from spring to summer appears driven in part by the smaller size of sulfate aerosol in summer. The anthropogenic contribution to Arctic AOD is a factor of 4 larger in spring than in summer and is mainly sulfate. Simulation of absorbing aerosol optical depth (AAOD) indicates that non-BC aerosol (OC and dust) contributed 24% of Arctic AAOD at 550 nm and 37% of absorbing mass deposited to the snow pack in 2008. Open fires contributed half of AAOD at 550 nm and half of deposition to the snowpack. Engineering and Applied Sciences Version of Record |
format |
Article in Journal/Newspaper |
author |
Breider, Thomas J. Mickley, Loretta J. Jacob, Daniel James Wang, Qiaoqiao Fisher, Jenny A. Chang, Rachel. Y.-W. Alexander, Becky |
author_facet |
Breider, Thomas J. Mickley, Loretta J. Jacob, Daniel James Wang, Qiaoqiao Fisher, Jenny A. Chang, Rachel. Y.-W. Alexander, Becky |
author_sort |
Breider, Thomas J. |
title |
Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption |
title_short |
Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption |
title_full |
Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption |
title_fullStr |
Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption |
title_full_unstemmed |
Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption |
title_sort |
annual distributions and sources of arctic aerosol components, aerosol optical depth, and aerosol absorption |
publisher |
Wiley-Blackwell |
publishDate |
2014 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:14121879 https://doi.org/10.1002/2013JD020996 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic black carbon International Polar Year |
genre_facet |
Arctic Arctic black carbon International Polar Year |
op_relation |
doi:10.1002/2013JD020996 Journal of Geophysical Research: Atmospheres Breider, Thomas J., Loretta J. Mickley, Daniel James Jacob, Qiaoqiao Wang, Jenny A. Fisher, Rachel Y.-W. Chang, and Becky Alexander. 2014. “Annual Distributions and Sources of Arctic Aerosol Components, Aerosol Optical Depth, and Aerosol Absorption.” Journal of Geophysical Research: Atmospheres 119 (7): 4107–4124. 2169-897X 2169-8996 http://nrs.harvard.edu/urn-3:HUL.InstRepos:14121879 |
op_doi |
https://doi.org/10.1002/2013JD020996 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
119 |
container_issue |
7 |
container_start_page |
4107 |
op_container_end_page |
4124 |
_version_ |
1766299094310977536 |