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Daily and Hourly Variability in Global Fire Emissions and Consequences for Atmospheric Model Predictions of Carbon MonoxideAttribution of the causes of atmospheric trace gas and aerosol variability often requires the use of high resolution time series of anthropogenic and natural emissions inventories. Here we developed an approach for representing synoptic- and diurnal-scale temporal variability in fire emissions for the Global Fire Emissions Database version 3 (GFED3). We distributed monthly GFED3 emissions during 2003-2009 on a daily time step using Moderate Resolution Imaging Spectroradiometer (MODIS)-derived measurements of active fires from Terra and Aqua satellites. In parallel, mean diurnal cycles were constructed from Geostationary Operational Environmental Satellite (GOES) active fire observations. We found that patterns of daily variability in fires varied considerably across different biomes, with short but intense periods of daily emissions in boreal ecosystems and lower intensity (but more continuous) periods of bunting in savannas. On diurnal timescales, our analysis of the GOES active fires indicated that fires in savannas, grasslands, and croplands occurred earlier in the day as compared to fires in nearby forests. Comparison with Total Carbon Column Observing Network (TCCON) and Measurements of Pollution in the Troposphere (MOPITT) column CO observations provided evidence that including daily variability in emissions moderately improved atmospheric model simulations, particularly during the fire season and near regions with high levels of biomass burning. The high temporal resolution estimates of fire emissions developed here may ultimately reduce uncertainties related to fire contributions to atmospheric trace gases and aerosols. Important future directions include reconciling top-down and bottom up estimates of fire radiative power and integrating burned area and active fire time series from multiple satellite sensors to improve daily emissions estimates.
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Mu, M.
(California Univ. Irvine, CA, United States)
Randerson, J. T.
(California Univ. Irvine, CA, United States)
van der Werf, G. R.
(VU Univ. Amsterdam, Netherlands)
Giglio, L.
(Maryland Univ. College Park, MD, United States)
Kasibhatla, P.
(Duke Univ. Durham, NC, United States)
Morton, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Collatz, G. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
DeFries, R. S.
(Columbia Univ. New York, NY, United States)
Hyer, E. J.
(Naval Research Lab. Monterey, CA, United States)
Prins, E. M.
(Wisconsin-Madison Univ. Madison, WI, United States)
Griffith, D. W. T.
(Wollongong Univ. Australia)
Wunch, D.
(California Inst. of Tech. Pasadena, CA, United States)
Toon, G. C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sherlock, V.
(National Inst. of Water and Atmospheric Research Wellington, New Zealand)
Wennberg, P. O.
(California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
April 18, 2011
Subject Category
Environment Pollution
Report/Patent Number
Funding Number(s)
Distribution Limits
Public Use Permitted.
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