Chappellaz, JaFung, IyThompson, Am2022-11-232022-11-232022-11-231993-07-0110.1034/j.1600-0889.1993.t01-2-00002.xhttps://infoscience.epfl.ch/handle/20.500.14299/192703WOS:A1993LP57900002An 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. -Authorsatmospheric methanebiogenic sourcemethane fluxphotochemical modelsinkwetlandtext::journal::journal article::research article