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Sources and Sinks of Methane

  • D. Bachelet
  • H. U. Neue
Conference paper
Part of the NATO ASI Series book series (volume 13)

Abstract

Methane (CH4) concentrations in the atmosphere have increased from about 0.75 to 1.7 ppmv since preindustrial times (Steele et al., 1987; Khalil and Rasmussen, 1990). The current annual rate of increase of about 0.8% year−1 is attributed to increases in industrial and agricultural emissions since some key natural sources (e.g., wetlands and marshes) have been reduced due to development pressure, decreasing their area in various parts of the world (see, for example, Lelieveld et al., 1993). We have tried, in this chapter, to concisely summarize the discussions that took place at the NATO-ARW and to quantify the size of the global “Methane Sources and Sinks” that may contribute to the atmospheric increase. Several “specialty” groups emerged during the workshop, and it is their conclusions that are presented here. Each paragraph is also the focus of an individual chapter and usually of several papers that have appeared in Chemosphere Vol. 26(1–4). We have tried to cite these documents in the relevant sections, and we refer the reader to these sources for detailed explanations of each source and sink.

Keywords

Emission Factor Methane Emission Methane Flux Atmospheric Methane Methane Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • D. Bachelet
    • 1
  • H. U. Neue
    • 2
  1. 1.US EPA Environmental Research LaboratoryManTech Environmental Technology, Inc.CorvallisUSA
  2. 2.International Rice Research InstituteManilaPhilippines

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