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Train-borne measurements of tropical methane enhancements from ephemeral wetlands in Australia

Journal Article


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Abstract


  • We report greenhouse gas concentrations measured on a train covering a north-south transect through central Australia from north to south coast. During the monsoonal wet season we found significant enhancements in methane that correlate well with changing area of wetland inundation in Australian tropical savanna regions. We used a meteorological and air pollution model to quantify the ephemeral wetland fluxes necessary to cause the observed enhancements and estimate the constant Australian tropical wetland emissions. Annual Australian tropical ephemeral wetland fluxes are estimated at 0.4 +/- 0.2 Tg CH4, with permanent wetlands contributing a similar amount, 0.5 +/- 0.2 Tg CH4.

Publication Date


  • 2010

Citation


  • Deutscher, N. M., Griffith, D. W. T., Paton-Walsh, C. & Borah, R. (2010). Train-borne measurements of tropical methane enhancements from ephemeral wetlands in Australia. Journal of Geophysical Research, 115 D15304-1-D15304-8.

Scopus Eid


  • 2-s2.0-77955534832

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1532&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/493

Has Global Citation Frequency


Start Page


  • D15304-1

End Page


  • D15304-8

Volume


  • 115

Abstract


  • We report greenhouse gas concentrations measured on a train covering a north-south transect through central Australia from north to south coast. During the monsoonal wet season we found significant enhancements in methane that correlate well with changing area of wetland inundation in Australian tropical savanna regions. We used a meteorological and air pollution model to quantify the ephemeral wetland fluxes necessary to cause the observed enhancements and estimate the constant Australian tropical wetland emissions. Annual Australian tropical ephemeral wetland fluxes are estimated at 0.4 +/- 0.2 Tg CH4, with permanent wetlands contributing a similar amount, 0.5 +/- 0.2 Tg CH4.

Publication Date


  • 2010

Citation


  • Deutscher, N. M., Griffith, D. W. T., Paton-Walsh, C. & Borah, R. (2010). Train-borne measurements of tropical methane enhancements from ephemeral wetlands in Australia. Journal of Geophysical Research, 115 D15304-1-D15304-8.

Scopus Eid


  • 2-s2.0-77955534832

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1532&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/493

Has Global Citation Frequency


Start Page


  • D15304-1

End Page


  • D15304-8

Volume


  • 115