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Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998
นักวิจัย : Shenoy, D.M. , DileepKumar, M. , Sarma, V.V.S.S.
คำค้น : greenhouse effect , tmospheric heat budget
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2543
อ้างอิง : Proc. Indian Acad. Sci. (Earth Planet. Sci.), vol.109(2), 279-283p. , http://drs.nio.org/drs/handle/2264/360
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The 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.

บรรณานุกรม :
Shenoy, D.M. , DileepKumar, M. , Sarma, V.V.S.S. . (2543). Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998.
    : National Institute Of Oceanography (NIO), India.
Shenoy, D.M. , DileepKumar, M. , Sarma, V.V.S.S. . 2543. "Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998".
    : National Institute Of Oceanography (NIO), India.
Shenoy, D.M. , DileepKumar, M. , Sarma, V.V.S.S. . "Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998."
    : National Institute Of Oceanography (NIO), India, 2543. Print.
Shenoy, D.M. , DileepKumar, M. , Sarma, V.V.S.S. . Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998. : National Institute Of Oceanography (NIO), India; 2543.