Measurements of air-sea gas exchange at high wind speeds in the Southern Ocean: Implications for global parameterizations

Publication Type  Journal Article
Year of Publication  2006
Authors  Ho, D. T.; Law, C. S.; Smith, M. J.; Schlosser, P.; Harvey, M.; Hill, P.
Journal Title  Geophysical Research Letters
Volume  33
Issue  16
Pages  -
Journal Date  Aug 25
ISBN Number  0094-8276
Accession Number  ISI:000240099600003
Key Words  carbon-dioxide; sulfur-hexafluoride; tracers; fluxes

The SOLAS Air-Sea Gas Exchange (SAGE) Experiment was conducted in the western Pacific sector of the Southern Ocean. During SAGE, gas transfer velocities were determined using the He-3/SF6 dual gas tracer technique, and results were obtained at higher wind speeds (16.0 m s(-1)) than in previous open ocean dual tracer experiments. The results clearly reveal a quadratic relationship between wind speed and gas transfer velocity rather than a recently proposed cubic relationship. A new parameterization between wind speed and gas transfer velocity is proposed, which is consistent with previous He-3/SF6 dual tracer results from the coastal and open ocean obtained at lower wind speeds. This suggests that factors controlling air-sea gas exchange in this region are similar to those in other parts of the world ocean, and that the parameterization presented here should be applicable to the global ocean.


078JSTimes Cited:7Cited References Count:27

URL  <Go to ISI>://000240099600003
DOI  Doi 10.1029/2006gl026817