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Remote-sensing constraints on South America fire traits by Bayesian fusion of atmospheric and surface data

Bloom, A. Anthony and Worden, John and Jiang, Zhe and Worden, Helen and Kurosu, Thomas and Frankenberg, Christian and Schimel, David (2015) Remote-sensing constraints on South America fire traits by Bayesian fusion of atmospheric and surface data. Geophysical Research Letters, 42 (4). pp. 1268-1274. ISSN 0094-8276.

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Satellite observations reveal substantial burning during the 2007 and 2010 tropical South America fire season, with both years exhibiting similar total burned area. However, 2010 CO fire emissions, based on satellite CO concentration measurements, were substantially lower (−28%), despite the once‐in‐a‐century drought in 2010. We use Bayesian inference with satellite measurements of CH_4 and CO concentrations and burned area to quantify shifts in combustion characteristics in 2010 relative to 2007. We find an 88% probability in reduced combusted biomass density associated with the 2010 fires and an 82% probability of lower fire carbon losses in 2010 relative to 2007. Higher combustion efficiency was a smaller contributing factor to the reduced 2010 CO emissions. The reduction in combusted biomass density is consistent with a reduction (4–6%) in Global Ozone Monitoring Experiment 2 solar‐induced fluorescence (a proxy for gross primary production) during the preceding months and a potential reduction in biomass (≤8.3%) due to repeat fires.

Item Type:Article
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URLURL TypeDescription
Bloom, A. Anthony0000-0002-1486-1499
Frankenberg, Christian0000-0002-0546-5857
Additional Information:© 2015. American Geophysical Union. Received 19 NOV 2014. Accepted 18 JAN 2015. Accepted article online 23 JAN 2015. Published online 26 FEB 2015. Part of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. TES CH_4 and CO data products are available at The MODIS burned area product was obtained from The NCAR MOPITT project is supported by the National Aeronautics and Space Administration (NASA) Earth Observing System (EOS) Program. We are grateful for feedback from F. Landerer and J. Joiner on our use of GRACE and GOME‐2 data. This research was funded by NASA ROSES CSS proposal 13‐CARBON13_2‐0071. The Editor thanks two anonymous reviewers for their assistance in evaluating this paper.
Funding AgencyGrant Number
Subject Keywords:South America; biomass burning; MODIS; MOPITT; TES; carbon cycle
Issue or Number:4
Record Number:CaltechAUTHORS:20181127-155642766
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Official Citation:Bloom, A. A., Worden, J., Jiang, Z., Worden, H., Kurosu, T., Frankenberg, C. and Schimel, D. (2015), Remote‐sensing constraints on South America fire traits by Bayesian fusion of atmospheric and surface data. Geophys. Res. Lett., 42: 1268–1274. doi: 10.1002/2014GL062584.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91247
Deposited By: George Porter
Deposited On:28 Nov 2018 00:20
Last Modified:03 Oct 2019 20:33

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