HR: 13:30h
AN: H23C-01    [Abstracts]
TI: Carbon Fluxes in the Amazon and Mekong River systems: Relative Importance of Outgassing versus Fluvial Export
AU: * Richey, J E
EM: jrichey@u.washington.edu
AF: School of Oceanography, University of Washington, Seattle, WA 98195 United States
AU: Alin, S
EM: salin@u.washington.edu
AF: School of Oceanography, University of Washington, Seattle, WA 98195 United States
AU: Aalo, R
EM: aalto@u.washington.edu
AF: Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195 United States
AB: The "role" of large continental rivers in the global carbon cycle is most typically expressed as the fluvial export of total organic and dissolved inorganic carbon from land to the ocean. A closer examination suggests that the organic carbon fluxes may be underestimated by a factor of about 2 and that continental sedimentation may constitute an additional sink, but that outgassing to the atmosphere substantially mitigates both those sinks. The relative distributions of outgassing versus fluvial export is evaluated for two contrasting rivers systems.
DE: 0400 Biogeosciences
DE: 1860 Runoff and streamflow
DE: 1871 Surface water quality
SC: Hydrology [H]
MN: 2005 Joint Assembly