Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada
We identify an important Black Carbon (BC) aerosol deposition event that was observed in snow stratigraphy and dated to between 27 July 2013 – 2 August 2013. This event comprises a significant portion (~60%) of total deposition over a 10 month period (July 2013 – April 2014). Here we link this event...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Language: | unknown |
Published: |
2021
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1390441 https://www.osti.gov/biblio/1390441 https://doi.org/10.1002/2017GL073701 |
id |
ftosti:oai:osti.gov:1390441 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1390441 2023-07-30T04:03:50+02:00 Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada Thomas, J. L. Polashenski, C. M. Soja, A. J. Marelle, L. Casey, K. A. Choi, H. D. Raut, J.-C. Wiedinmyer, C. Emmons, L. K. Fast, J. D. Pelon, J. Law, K. S. Flanner, M. G. Dibb, J. E. 2021-08-30 application/pdf http://www.osti.gov/servlets/purl/1390441 https://www.osti.gov/biblio/1390441 https://doi.org/10.1002/2017GL073701 unknown http://www.osti.gov/servlets/purl/1390441 https://www.osti.gov/biblio/1390441 https://doi.org/10.1002/2017GL073701 doi:10.1002/2017GL073701 54 ENVIRONMENTAL SCIENCES 2021 ftosti https://doi.org/10.1002/2017GL073701 2023-07-11T09:21:07Z We identify an important Black Carbon (BC) aerosol deposition event that was observed in snow stratigraphy and dated to between 27 July 2013 – 2 August 2013. This event comprises a significant portion (~60%) of total deposition over a 10 month period (July 2013 – April 2014). Here we link this event to forest fires burning in Canada during summer 2013 using modeling and remote sensing tools. Aerosols were detected by both the CALIOP and MODIS instruments during transport between Canada and Greenland, confirming that this event involved emissions from forest fires in Canada. We use high-resolution regional chemical transport mod-eling (WRF-Chem) combined with high-resolution fire emissions (FINNv1.5) to study aerosol emissions, transport, and deposition during this event. The model accurately captures the timing of the BC deposition event and shows that the major contribution to deposition during this event is emissions originating from fires in Canada. However, the model under-predicts aerosol deposition compared to measurements at all sites by a factor of 2–100. Under-prediction of modeled BC deposition originates from uncertainties in fire emissions combined with uncertainties in aerosol scavenging by clouds. This study suggests that it is possible to describe the transport of an exceptional smoke event on regional and continental scales. Improvements in model descriptions of precipitation scavenging and emissions from wildfires are needed to correctly predict deposition, which is critical for determining the climate impacts of aerosols that originate from fires. Other/Unknown Material Greenland Ice Sheet SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Canada Greenland Geophysical Research Letters 44 15 7965 7974 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Thomas, J. L. Polashenski, C. M. Soja, A. J. Marelle, L. Casey, K. A. Choi, H. D. Raut, J.-C. Wiedinmyer, C. Emmons, L. K. Fast, J. D. Pelon, J. Law, K. S. Flanner, M. G. Dibb, J. E. Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
We identify an important Black Carbon (BC) aerosol deposition event that was observed in snow stratigraphy and dated to between 27 July 2013 – 2 August 2013. This event comprises a significant portion (~60%) of total deposition over a 10 month period (July 2013 – April 2014). Here we link this event to forest fires burning in Canada during summer 2013 using modeling and remote sensing tools. Aerosols were detected by both the CALIOP and MODIS instruments during transport between Canada and Greenland, confirming that this event involved emissions from forest fires in Canada. We use high-resolution regional chemical transport mod-eling (WRF-Chem) combined with high-resolution fire emissions (FINNv1.5) to study aerosol emissions, transport, and deposition during this event. The model accurately captures the timing of the BC deposition event and shows that the major contribution to deposition during this event is emissions originating from fires in Canada. However, the model under-predicts aerosol deposition compared to measurements at all sites by a factor of 2–100. Under-prediction of modeled BC deposition originates from uncertainties in fire emissions combined with uncertainties in aerosol scavenging by clouds. This study suggests that it is possible to describe the transport of an exceptional smoke event on regional and continental scales. Improvements in model descriptions of precipitation scavenging and emissions from wildfires are needed to correctly predict deposition, which is critical for determining the climate impacts of aerosols that originate from fires. |
author |
Thomas, J. L. Polashenski, C. M. Soja, A. J. Marelle, L. Casey, K. A. Choi, H. D. Raut, J.-C. Wiedinmyer, C. Emmons, L. K. Fast, J. D. Pelon, J. Law, K. S. Flanner, M. G. Dibb, J. E. |
author_facet |
Thomas, J. L. Polashenski, C. M. Soja, A. J. Marelle, L. Casey, K. A. Choi, H. D. Raut, J.-C. Wiedinmyer, C. Emmons, L. K. Fast, J. D. Pelon, J. Law, K. S. Flanner, M. G. Dibb, J. E. |
author_sort |
Thomas, J. L. |
title |
Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada |
title_short |
Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada |
title_full |
Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada |
title_fullStr |
Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada |
title_full_unstemmed |
Quantifying black carbon deposition over the Greenland ice sheet from forest fires in Canada |
title_sort |
quantifying black carbon deposition over the greenland ice sheet from forest fires in canada |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1390441 https://www.osti.gov/biblio/1390441 https://doi.org/10.1002/2017GL073701 |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
http://www.osti.gov/servlets/purl/1390441 https://www.osti.gov/biblio/1390441 https://doi.org/10.1002/2017GL073701 doi:10.1002/2017GL073701 |
op_doi |
https://doi.org/10.1002/2017GL073701 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
15 |
container_start_page |
7965 |
op_container_end_page |
7974 |
_version_ |
1772814953112141824 |