Show simple item record

dc.contributor.authorShenoy, D.M.
dc.contributor.authorDileepKumar, M.
dc.contributor.authorSarma, V.V.S.S.
dc.date.accessioned2006-09-04T04:55:00Z
dc.date.available2006-09-04T04:55:00Z
dc.date.issued2000
dc.identifier.citationProc. Indian Acad. Sci. (Earth Planet. Sci.), vol.109(2), 279-283p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/360
dc.description.abstractThe air-sea exchange is one of the main mechanisms maintaining the abundances of trace gases in the atmosphere. Some of these, such as carbon dioxide and dimethyl sulphide (DMS), will have a bearing on the atmospheric heat budget. While the former facilitates the trapping of radiation (greenhouse effect) the latter works in the opposite direction through reflectance of radiation back into space by sulphate aerosols that form from oxidation of DMS in atmosphere. Here we report on the first measurements made on DMS in the Bay of Bengal and the factors regulating its abundance in seawater. Phytoplankton alone does not seem to control the extent of DMS concentrations. We find that changes in salinity could effectively regulate the extent of DMSP production by marine phytoplankton. In addition, we provide the first ever evidence to the occurrence of DMS precursor, DMSP, in marine aerosols collected in the boundary layer. This suggests that the marine aerosol transport of DMSP will supplement DMS gaseous evasion in maintaining the atmospheric non-sea salt sulphur budget.
dc.format.extent121864 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherIndian Academy of Sciences
dc.subjectgreenhouse effect
dc.subjecttmospheric heat budget
dc.titleControls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998
dc.typeJournal Article


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record