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Pollution influences on atmospheric composition and chemistry at high northern latitudes: Boreal and California forest fire emissions

Singh, H. B. and Anderson, B. E. and Brune, W. H. and Cai, C. and Cohen, R. C. and Crawford, J. H. and Cubison, M. J. and Czech, E. P. and Emmons, L. and Fuelberg, H. E. and Huey, G. and Jacob, D. J. and Jimenez, J. L. and Kaduwela, A. and Kondo, Y. and Mao, J. and Olson, J. R. and Sachse, G. W. and Vay, S. A. and Weinheimer, A. and Wennberg, P. O. and Wisthaler, A. (2010) Pollution influences on atmospheric composition and chemistry at high northern latitudes: Boreal and California forest fire emissions. Atmospheric Environment, 44 (36). pp. 4553-4564. ISSN 1352-2310. doi:10.1016/j.atmosenv.2010.08.026.

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We analyze detailed atmospheric gas/aerosol composition data acquired during the 2008 NASA ARCTAS (Arctic Research of the Composition of the Troposphere from Aircraft and Satellites) airborne campaign performed at high northern latitudes in spring (ARCTAS-A) and summer (ARCTAS-B) and in California in summer (ARCTAS-CARB). Biomass burning influences were widespread throughout the ARCTAS campaign. MODIS data from 2000 to 2009 indicated that 2008 had the second largest fire counts over Siberia and a more normal Canadian boreal forest fire season. Near surface arctic air in spring contained strong anthropogenic signatures indicated by high sulfate. In both spring and summer most of the pollution plumes transported to the Arctic region were from Europe and Asia and were present in the mid to upper troposphere and contained a mix of forest fire and urban influences. The gas/aerosol composition of the high latitude troposphere was strongly perturbed at all altitudes in both spring and summer. The reactive nitrogen budget was balanced with PAN as the dominant component. Mean ozone concentrations in the high latitude troposphere were only minimally perturbed (<5 ppb), although many individual pollution plumes sampled in the mid to upper troposphere, and mixed with urban influences, contained elevated ozone (ΔO_3/ΔCO = 0.11 ± 0.09 v/v). Emission and optical characteristics of boreal and California wild fires were quantified and found to be broadly comparable. Greenhouse gas emission estimates derived from ARCTAS-CARB data for the South Coast Air Basin of California show good agreement with state inventories for CO_2 and N_(2)O but indicate substantially larger emissions of CH_4. Simulations by multiple models of transport and chemistry were found to be broadly consistent with observations with a tendency towards under prediction at high latitudes.

Item Type:Article
Related URLs:
URLURL TypeDescription
Brune, W. H.0000-0002-1609-4051
Cohen, R. C.0000-0001-6617-7691
Jacob, D. J.0000-0002-6373-3100
Jimenez, J. L.0000-0001-6203-1847
Weinheimer, A.0000-0001-6175-8286
Wennberg, P. O.0000-0002-6126-3854
Additional Information:© 2010 Elsevier Ltd. Received 12 April 2010; revised 5 August 2010; accepted 11 August 2010. Available online 21 August 2010. The ARCTAS campaign was funded by the NASA Tropospheric Chemistry Program, the NASA Radiation Sciences Program, and the California Air Resources Board. PTR-MS measurements were supported by the Austrian Research Promotion Agency (FFG), the Tiroler Zukunftstiftung, and the University of Innsbruck. We thank all ARCTAS participants for their contributions.
Funding AgencyGrant Number
California Air Resources BoardUNSPECIFIED
Austrian Research Promotion Agency (FFG)UNSPECIFIED
Tiroler ZukunftstiftungUNSPECIFIED
University of InnsbruckUNSPECIFIED
Subject Keywords:Arctic pollution; Ozone; Aerosols; Greenhouse gases; Wild fires; Models
Issue or Number:36
Record Number:CaltechAUTHORS:20101201-135740587
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21102
Deposited By: Jason Perez
Deposited On:01 Dec 2010 22:31
Last Modified:09 Nov 2021 00:05

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