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AGU: Geophysical Research Letters

 

Keywords

  • biomass burning
  • haze

Index Terms

  • Atmospheric Composition and Structure: Troposphere: composition and chemistry
  • Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry
  • Atmospheric Composition and Structure: Constituent sources and sinks
  • Atmospheric Composition and Structure: Aerosols and particles

Abstract

Biomass burning in Siberia and Kazakhstan as an important source for haze over the Alaskan Arctic in April 2008

C. Warneke

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

R. Bahreini

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

J. Brioude

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

C. A. Brock

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

J. A. de Gouw

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

D. W. Fahey

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

K. D. Froyd

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

J. S. Holloway

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

A. Middlebrook

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

L. Miller

NOAA ESRL Global Monitoring Division, Boulder, Colorado, USA

S. Montzka

NOAA ESRL Global Monitoring Division, Boulder, Colorado, USA

D. M. Murphy

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

J. Peischl

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

T. B. Ryerson

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

J. P. Schwarz

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

J. R. Spackman

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

P. Veres

Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, Colorado, USA

During the ARCPAC (Aerosol, Radiation, and Cloud Processes affecting Arctic Climate) airborne field experiment in April 2008 in northern Alaska, about 50 plumes were encountered with the NOAA WP-3 aircraft between the surface and 6.5 km. Onboard measurements and the transport model FLEXPART showed that most of the plumes were emitted by forest fires in southern Siberia-Lake Baikal area and by agricultural burning in Kazakhstan-southern Russia. Unexpectedly, these biomass burning plumes were the dominant aerosol and gas-phase features encountered in this area during April. The influence on the plumes from sources other than burning was small. The chemical characteristics of plumes from the two source regions were different, with higher enhancements relative to CO for most gas and aerosol species from the agricultural fires. In 2008, the fire season started earlier than usual in Siberia, which may have resulted in unusually efficient transport of biomass burning emissions into the Arctic.

Received 1 October 2008; accepted 5 December 2008; published 30 January 2009.

Citation: Warneke, C., et al. (2009), Biomass burning in Siberia and Kazakhstan as an important source for haze over the Alaskan Arctic in April 2008, Geophys. Res. Lett., 36, L02813, doi:10.1029/2008GL036194.

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