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GEOPHYSICAL RESEARCH LETTERS,
VOL. 32,
L11809,
doi:10.1029/2005GL022995,
2005
Quantifying CO emissions from the 2004 Alaskan wildfires using MOPITT CO data
G. Pfister
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
P. G. Hess
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
L. K. Emmons
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
J.-F. Lamarque
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
C. Wiedinmyer
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
D. P. Edwards
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
G. Pétron
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
J. C. Gille
Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado, USA
G. W. Sachse
NASA Langley Research Center, Hampton, Virginia, USA
Abstract
We present an inverse model analysis to quantify the emissions of wildfires in Alaska and Canada in the summer of 2004 using
carbon monoxide (CO) data from the Measurements of Pollution in the Troposphere (MOPITT) remote sensing instrument together
with the chemistry transport model MOZART (Model for Ozone and Related Chemical Tracers). We use data assimilation outside
the region of the fires to optimally constrain the CO background level and the transport into that region. Inverse modeling
is applied locally to quantify the fire emissions. Our a posteriori estimate of the wildfire emissions gives a total of 30
± 5 Tg CO emitted during June–August 2004 which is of comparable order to the anthropogenic emissions for the continental
US. The simulated CO fields have been evaluated by comparison with MOPITT and independent aircraft data.
Received 15
March
2005;
accepted 18
May
2005;
published 14
June
2005.
Index Terms: 0345 Atmospheric Composition and Structure: Pollution: urban and regional (0305, 0478, 4251); 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry; 3315 Atmospheric Processes: Data assimilation; 3360 Atmospheric Processes: Remote sensing.
Read Full Article (file size: 306606 bytes) Cited by
Citation: Pfister, G., P. G. Hess, L. K. Emmons, J.-F. Lamarque, C. Wiedinmyer, D. P. Edwards, G. Pétron, J. C. Gille, and G. W. Sachse
(2005),
Quantifying CO emissions from the 2004 Alaskan wildfires using MOPITT CO data,
Geophys. Res. Lett.,
32,
L11809,
doi:10.1029/2005GL022995.
Copyright 2005 by the American Geophysical Union.
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