Impacts of climate change on methane emissions from wetlands


Journal Article

We have included climate-sensitive methane emissions from wetlands within the GISS climate model using a linear parameterization derived from a detailed process model. The geographic distribution of wetlands is also climate-dependent. Doubled CO2 simulations using this model show an increase in annual average wetland methane emissions from 156 to 277 Tg/yr, a rise of 78%. The bulk of this increase is due to enhanced emissions from existing tropical wetlands. Additionally, high northern latitude wetland areas expand and emissions nearly triple during Northern summer. The global increase represents ∼20% of presentday inventories. These large values indicate that the potential response of natural emissions to climate change merit greater study, and should be included in projections of future global warming and tropospheric pollution. Copyright 2004 by the American Geophysical Union.

Full Text

Duke Authors

Cited Authors

  • Shindell, DT; Walter, BP; Faluvegi, G

Published Date

  • November 16, 2004

Published In

Volume / Issue

  • 31 / 21

International Standard Serial Number (ISSN)

  • 0094-8276

Digital Object Identifier (DOI)

  • 10.1029/2004GL021009

Citation Source

  • Scopus