Air-sea gas exchange of CO2 and DMS in the North Atlantic by eddy covariance

doi:doi:10.1029/2009GL038907

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L15816, 5 PP., 2009
doi:10.1029/2009GL038907

Air-sea gas exchange of CO₂ and DMS in the North Atlantic by eddy covariance

Scott Miller

Atmospheric Sciences Research Center, University at Albany, State University of New York, Albany, New York, USA

Christa Marandino

Earth System Science, University of California, Irvine, California, USA

Warren de Bruyn

Department of Chemistry, Chapman University, Orange, California, USA

Eric S. Saltzman

Earth System Science, University of California, Irvine, California, USA

We report the first simultaneous eddy covariance flux measurements of CO₂ and dimethylsulfide (DMS) over the open ocean for two North Atlantic cruises. After normalization for Schmidt number, the two gases give essentially identical gas transfer coefficients and wind speed dependences for the wind speed range 2–10 ms⁻¹. The data indicate a linear relationship between the gas transfer coefficient and mean wind speed, with measured gas transfer coefficients slightly above the Wanninkhof (1992) parameterization, particularly at low wind speeds.

Received 27 April 2009; accepted 6 July 2009; published 8 August 2009.

Citation: Miller, S., C. Marandino, W. de Bruyn, and E. S. Saltzman (2009), Air-sea gas exchange of CO₂ and DMS in the North Atlantic by eddy covariance, Geophys. Res. Lett., 36, L15816, doi:10.1029/2009GL038907.

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