Quantifying black carbon deposition to Greenland surface snow from forest fires in Canada

Jennie L. Thomas 1 Christopher M. Polashenski 2 Kathy S. Law 1 Mark G. Flanner 3 Jack E. Dibb 4, 5 Amber Jeanine Soja 6 Louis Marelle 7 Kimberly A. Casey 8 Hyun-Deok Choi 6 Jean-Christophe Raut 1 Christine Wiedinmyer 9 Louisa K. Emmons 10 Jérome Fast 11
1 TROPO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
2 CRREL - ERDC Cold Regions Research and Engineering Laboratory
3 CLaSP - Department of Climate and Space Sciences and Engineering
4 EOS - Institute for the Study of Earth, Oceans, and Space [Durham]
5 ESRC - Earth Systems Research Center [Durham]
6 NIA - National Institute of Aerospace [Hampton]
7 CICERO - Center for International Climate and Environmental Research [Oslo]
8 Thayer School of Engineering
9 NCAR - National Center for Atmospheric Research [Boulder]
10 ACOML - Atmospheric Chemistry Observations and Modeling Laboratory
11 PNNL - Pacific Northwest National Laboratory
Abstract : Black carbon (BC) concentrations has been observed in 22 snowpits sampled in the northwest sector of the Greenland ice sheet in April 2014. The pits contain a strong and widespread BC aerosol deposition event, which accumulated in the pits during two snow storms between 27 July and 2 August 2013. This event comprises a significant portion (57% on average across all pits) of total BC deposition measured in the snowpits (~10 month record). We link this deposition event to forest fires burning in Canada during summer 2013 using modeling and remote sensing tools. Specifically, we use high-resolution regional chemical transport modeling (WRF-Chem) combined with high-resolution fire emissions (FINNv1.5) to study aerosol emissions, transport, and deposition to Greenland snow during this event. The model captures the timing of the BC deposition event and shows that fires in Canada were the main source of deposited BC. The implications for understanding the influence of BC originating from fires on the optical properties of snow is discussed.
Document type :
Poster communications
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https://hal-insu.archives-ouvertes.fr/insu-01677591
Contributor : Catherine Cardon <>
Submitted on : Monday, January 8, 2018 - 2:51:32 PM
Last modification on : Friday, January 10, 2020 - 3:42:35 PM

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  • HAL Id : insu-01677591, version 1

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INSU | CNRS | UVSQ | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE | LATMOS | SU-SCIENCES

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Jennie L. Thomas, Christopher M. Polashenski, Kathy S. Law, Mark G. Flanner, Jack E. Dibb, et al.. Quantifying black carbon deposition to Greenland surface snow from forest fires in Canada. 14th International Conference on the Physics and Chemistry of Ice (PCI- 2018), Jan 2018, Zürich, Switzerland. ⟨insu-01677591⟩

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