El Niño, the 2006 Indonesian peat fires, and the distribution of atmospheric methane

Dry conditions from a moderate El Niño during the fall of 2006 resulted in enhanced burning in Indonesia with fire emissions of CO approximately 4-6 times larger than the prior year. Here we use new tropospheric methane and CO data from the Aura Tropospheric Emission Spectrometer and new CO profile measurements from the Terra Measurements of Pollution in the Troposphere (MOPITT) satellite instruments with the Goddard Earth Observing System (GEOS)-Chem model to estimate methane emissions of 4.25 ± 0.75 Tg for October-November 2006 from these fires. Errors in convective parameterization in GEOS-Chem, evaluated by comparing MOPITT and GEOS-Chem CO profiles, are the primary uncertainty of the emissions estimate. The El Niño related Indonesian fires increased the tropical distribution of atmospheric methane relative to 2005, indicating that tropical biomass burning can compensate for expected decreases in tropical wetland methane emissions from reduced rainfall during El Niño as found in previous studies.

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Author Worden, J.
Jiang, Z.
Jones, D.
Alvarado, M.
Bowman, K.
Frankenberg, C.
Kort, E.
Kulawik, S.
Lee, M.
Liu, J.
Payne, V.
Wecht, K.
Worden, Helen M.
Publisher UCAR/NCAR - Library
Publication Date 2013-09-28T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-12T01:16:12.868710
Metadata Record Identifier edu.ucar.opensky::articles:12959
Metadata Language eng; USA
Suggested Citation Worden, J., Jiang, Z., Jones, D., Alvarado, M., Bowman, K., Frankenberg, C., Kort, E., Kulawik, S., Lee, M., Liu, J., Payne, V., Wecht, K., Worden, Helen M.. (2013). El Niño, the 2006 Indonesian peat fires, and the distribution of atmospheric methane. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d79s1rxf. Accessed 30 July 2025.

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