Mathematics – Logic
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..587r&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 5, p. 587-590
Mathematics
Logic
23
Geochemistry: Marine Geochemistry, Oceanography: Biological And Chemical: Chemical Tracers, Oceanography: Biological And Chemical: Gases
Scientific paper
During May-August, 1997, the distributions of dissolved methane and CCl3F (CFC11) were measured in the Atlantic between 50° and 60°N. In surface waters throughout the region, methane was observed to be close to equilibrium with the atmospheric mixing ratio, implying that surface ocean methane is tracking its atmospheric history in regions of North Atlantic Deep Water formation. Despite the different atmospheric history and ocean chemistry of CH4 and CFC11, their spatial distribution patterns in the water column are remarkably similar. One-dimensional distributions have been simulated with an advection-diffusion model forced by the atmospheric histories. The results suggest that the similar patterns result from the increasing input of CH4 and CFC11 to newly formed deep waters over time, combined with the effect of horizontal mixing and the oxidation of methane on a 50 year time scale.
Keir Robin S.
Rehder Gregor
Rhein Monika
Suess Erwin
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