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The atmospheric CH4 increase since the Last Glacial Maximum. I - Source estimatesAn 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.
Document ID
19930070264
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chappellaz, Jerome A.
(NASA Goddard Inst. for Space Studies New York, NY, United States)
Fung, Inez Y.
(NASA Goddard Inst. for Space Studies New York, United States)
Thompson, Anne M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Tellus, Series B - Chemical and Physical Meteorology
Volume: 45B
Issue: 3
ISSN: 0280-6509
Subject Category
Geophysics
Accession Number
93A54261
Distribution Limits
Public
Copyright
Other

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