Document Type
Article
Publication Date
2008
Abstract
Dimethylsulfide (DMS) atmospheric and oceanic concentrations and eddy covariance air/sea fluxes were measured over the N. Atlantic Ocean during July 2007 from Iceland to Woods Hole, MA, USA. Seawater DMS levels north of 55 degrees N ranged from 3 to 17 nM, with variability related to the satellite-derived distributions of coccoliths and to a lesser extent, chlorophyll. For the most intense bloom region southwest of Iceland, DMS air/sea fluxes were as high as 300 mu mol m(-2) d(-1), larger than current model estimates. The observations imply that gas exchange coefficients in this region are significantly greater than those estimated using most gas transfer parameterizations. South of 55 degrees N, DMS levels were lower and the gas transfer coefficients were similar to those observed in other regions of the ocean. The data suggest that DMS emissions from the bloom region may be significantly larger than current estimates. The anomalous gas exchange coefficients likely reflect strong near-surface, water column DMS gradients influenced by physical and biological processes.
Recommended Citation
Marandino, C. A., W. J. De Bruyn, S. D. Miller, and E. S. Saltzman (2008), DMS air/sea flux and gas transfer coefficients from the North Atlantic summertime coccolithophore bloom, Geophys. Res. Lett., 35, L23812, doi: 10.1029/2008GL036370.
Copyright
American Geophysical Union
Included in
Atmospheric Sciences Commons, Environmental Chemistry Commons, Oceanography Commons, Other Oceanography and Atmospheric Sciences and Meteorology Commons, Plant Sciences Commons
Comments
This article was originally published in Geophysical Research Letters, volume 35, in 2009. DOI: 0.1029/2008GL036370