The atmospheric CH₄ increase since the Last Glacial Maximum: (1). Source estimates

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https://b.tellusjournals.se/articles/10.3402/tellusb.v45i3.15726

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https://doi.org/10.3402/tellusb.v45i3.15726
 http://hdl.handle.net/11603/35044

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UMBC GESTAR II

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https://orcid.org/0000-0002-7829-0920

Date

1993-01-01

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journal articles
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Citation of Original Publication

Chappellaz, Jérôme A., Inez Y. Fung, and Anne M. Thompson. “The Atmospheric CH₄ Increase since the Last Glacial Maximum: (1). Source Estimates” 45, no. 3 (January 1, 1993): 228-41. https://doi.org/10.3402/tellusb.v45i3.15726.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

An estimate of the distribution of wetland area and associated CH₄ emission is presented for the Last Glacial Maximum (LGM, 18 kyr BP, kiloyear Before Present) and the Pre-Industrial Holocene (PIH, 9000–200 years BP). The wetland source, combined with estimates of the other biogenic sources and sink, yields total source strengths of 120 and 180 Tg CH₄/yr for LGM and PIH respectively. These source strengths are shown to be consistent with source estimates inferred from a photochemical model, and point to changes in wetland CH₄ source as a major factor driving the atmospheric CH₄ increase from LGM to PIH.