Fluxes and gas transfer rates of the biogenic trace gas DMS derived from atmospheric gradients
Zemmelink, Hendrik J.
Dacey, John W. H.
Hintsa, Eric J.
McGillis, Wade R.
Gieskes, Winfried W. C.
de Groot, Henk W.
Baar, Hein J. W. de
MetadataShow full item record
Gas transfer rates were determined from vertical profile measurements of atmospheric dimethylsulfide (DMS) gradients over the equatorial Pacific Ocean obtained during the GasEx-2001 cruise. A quadratic relationship between gas transfer velocity and wind speed was derived from the DMS flux measurements; this relationship was in close agreement with a parameterization derived from relaxed eddy accumulation measurements of DMS over the northeastern Pacific Ocean. However, the GasEx-2001 relationship results in gas transfer rates that are a factor 2 higher than gas transfer rates calculated from a parameterization that is based on coincident eddy correlation measurements of CO2 flux. The measurement precision of both the profiling and eddy correlation techniques applied during GasEx-2001 is comparable; the two gas transfer data sets are in agreement within their uncertainty. Differences in the number of samples and the wind speed range over which CO2 and DMS fluxes were measured are likely causes for the observed discrepancy.
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C08S10, doi:10.1029/2003JC001795.
Showing items related by title, author, creator and subject.
Li, Ming; Trowbridge, John H.; Geyer, W. Rockwell (American Meteorological Society, 2008-02)Stratification and turbulent mixing exhibit a flood–ebb tidal asymmetry in estuaries and continental shelf regions affected by horizontal density gradients. The authors use a large-eddy simulation (LES) model to investigate ...
Maresca, Thomas J.; Groen, Aaron C.; Gatlin, Jesse C.; Ohi, Ryoma; Mitchison, Timothy J.; Salmon, Edward D. (2009-05)During animal cell division, a gradient of GTP-bound Ran is generated around mitotic chromatin. It is generally accepted that this RanGTP gradient is essential for organizing the spindle since it locally activates critical ...
Gradients in dimethylsulfide, dimethylsulfoniopropionate, dimethylsulfoxide, and bacteria near the sea surface Zemmelink, Hendrik J.; Houghton, Leah; Sievert, Stefan M.; Frew, Nelson M.; Dacey, John W. H. (Inter-Research, 2005-06-23)Gradients of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO), and bacterial numbers and diversity from the surface microlayer to 500 cm depth were assessed in coastal waters surrounding ...