Open AccessSea‐to‐air fluxes from measurements of the atmospheric gradient of dimethylsulfide and comparison with simultaneous relaxed eddy accumulation measurements
Author(s) -
Hintsa Eric J.,
Dacey John W. H.,
McGillis Wade R.,
Edson James B.,
Zappa Christopher J.,
Zemmelink Hendrik J.
Publication year - 2004
Publication title -
journal of geophysical research: oceans
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2002jc001617
Subject(s) - flux (metallurgy) , planetary boundary layer , environmental science , atmospheric sciences , wind speed , eddy covariance , seawater , range (aeronautics) , boundary layer , dimethyl sulfide , meteorology , geology , chemistry , materials science , physics , oceanography , mechanics , sulfur , organic chemistry , ecology , ecosystem , composite material , biology
We measured vertical profiles of dimethylsulfide (DMS) in the atmospheric marine boundary layer from R/P FLIP during the 2000 FAIRS cruise. Applying Monin‐Obukhov similarity theory to the DMS gradients and simultaneous micrometeorological data, we calculated sea‐to‐air DMS fluxes for 34 profiles. From the fluxes and measured seawater DMS concentrations, we calculated the waterside gas transfer velocity, k w . Gas transfer velocities from the gradient flux approach are within the range of previous commonly used parameterizations of k w as a function of wind speed but are a factor of 2 smaller than simultaneous determinations of transfer velocity using the relaxed eddy accumulation technique. This is the first field comparison of these different techniques for measuring DMS flux from the ocean; the accuracy of the techniques and possible reasons for the discrepancy are discussed.