Water-side turbulence enhancement of ozone deposition to the ocean

C.W. Fairall, D. Helmig, L.N. Ganzeveld, J. Hare

Research output: Contribution to journalArticleAcademicpeer-review

33 Citations (Scopus)

Abstract

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 103 s¿1, 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.
Original languageEnglish
Pages (from-to)443-451
JournalAtmospheric Chemistry and Physics
Volume2007
Issue number7
Publication statusPublished - 2007

Keywords

  • dry deposition
  • boundary-layer
  • gas-exchange
  • wind-speed
  • parameterization
  • surface
  • fluxes
  • trends

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