References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-7-443-2007

Water-side turbulence enhancement of ozone deposition to the ocean

Fairall

C. W.

¹ Helmig

² Ganzeveld

³ Hare

⁴ ⁵

NOAA Earth Science Research Laboratory, Boulder, CO, USA

INSTAAR, University of Colorado, Boulder, CO, USA

Max-Planck Institute for Chemistry, Mainz, Germany

CIRES, University of Colorado, Boulder, CO, USA

now at: SOLAS International Project Office, University of East Anglia, Norwich, UK

25 01 2007

7 2 443 451

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A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport equation (with a chemical source term) in the ocean. It extends previous work that only considered reactions within the oceanic molecular sublayer. The sensitivity of the ocean-side transport to reaction rate and wind forcing is examined. A more complicated case with a much more reactive thin surfactant layer is also considered. The full atmosphere-ocean deposition velocity is obtained by matching boundary conditions at the interface. For an assumed ocean reaction rate of 10<sup>3</sup> s<sup>−1</sup>, the enhancement for ozone deposition by oceanic turbulence is found to be up to a factor of three for meteorological data obtained in a recent cruise off the East Coast of the U.S.

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