Air-Water Gas Transfer in Coastal Waters
SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA
Pagination or Media Count:
The long-range objective of this project is threefold a the investigation of the mechanisms of air-water gas transfer by field measurements b the development of novel instrumentation for in situ measurements of the gas transfer rate and the parameters controlling it and c the solution of the longstanding problem of a physically-based parameterization of the air-sea gas transfer rate. In interdisciplinary field experiments the influence of wind forcing, short wind waves, and surfactants on the air-sea gas transfer is studied in coastal waters. The measurements include the air-sea gas transfer rate with a temporal resolution in order of minutes, the air friction velocity, water currents and turbulence, air and water temperatures, visible and IR radiative fluxes, the visco-elastic properties of surface films, and wave number-frequency spectra of short wind waves. The measurements of the air-sea gas exchange rate with our instruments were combined with concentration measurements of carbon dioxide and dimethyl sulfide in the sea and the atmosphere, and direct flux measurements of carbon dioxide using the eddy correlation technique.
- Physical and Dynamic Oceanography