Reference : Detection and Attribution of Wildfire Pollution in the Arctic and Northern Mid-latitu...
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Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/241410
Detection and Attribution of Wildfire Pollution in the Arctic and Northern Mid-latitudes using a Network of FTIR Spectrometers and GEOS-Chem
English
Lutsch, Erik [University of Toronto > Department of Physics >]
Strong, Kimberly [University of Toronto > Department of Physics >]
Jones, Dylan B. A. [University of Toronto > Department of Physics >]
Blumenstock, Thomas [Karlsruhe Institute of Technology > >]
Conway, Stéphanie [University of Toronto > Department of Physics >]
Fisher, Jenny A. [University of Wollongong > Centre for Atmospheric Chemistry >]
Hannigan, James W. [> >]
Hase, Frank [> >]
Kasai, Yasuko [> >]
Mahieu, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Makarova, Maria [> >]
Morino, Isamu [> >]
Nagahama, Tomoo [> >]
Notholt, Justus [> >]
Ortega, Ivan [> >]
Palm, Mathias [> >]
Poberovskii, Anatoly V. [> >]
Sussmann, Ralf [> >]
Warneke, Thorsten [> >]
18-Nov-2019
Copernicus publications
Atmospheric Chemistry and Physics Discussions
57
Yes
1680-7375
Göttingen
Germany
[en] atmospheric pollution ; remote sensing ; biomass burning
[en] We present a multi-year time series of column abundances of carbon monoxide (CO), hydrogen cyanide (HCN), and ethane (C2H6) measured using Fourier transform infrared (FTIR) spectrometers at ten sites affiliated with the Network for Detection of Atmospheric Composition Change (NDACC). Six are high-latitude sites: Eureka, Ny-Alesund, Thule, Kiruna, Poker Flat, and St. Petersburg , and four are mid-latitude sites: Zugspitze, Jungfraujoch, Toronto, and Rikubetsu. For each site, the inter-annual trends and seasonal variabilities of the CO time series are accounted for, allowing ambient concentrations to be determined. Enhancements above ambient levels were used to identify possible wildfire pollution events. Since the abundance of each trace gas emitted in a wildfire event is specific to the type of vegetation burned and the burning phase, correlations of CO to the long-lived wildfire tracers HCN and C2H6 allow for further confirmation of the detection of wildfire pollution, while complementary measurements of aerosol optical depth from nearby AERONET sites confirm the presence of wildfire smoke. A GEOS-Chem tagged CO simulation with Global Fire Assimilation System (GFAS) biomass burning emissions was used to determine the source attribution of CO concentrations at each site from 2003–2018. The influence of the various wildfire sources is found to differ between sites while North American and Asian boreal wildfires fires were found to be the greatest contributors to episodic CO enhancements in the summertime at all sites.
Sphères - SPHERES
http://hdl.handle.net/2268/241410
10.5194/acp-2019-881
https://www.atmos-chem-phys-discuss.net/acp-2019-881/
Discussion paper ++ Under review for Atmos. Chem. Phys.
https://www.atmos-chem-phys-discuss.net/acp-2019-881/

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