Variability of atmospheric dimethylsulphide over the southern Indian Ocean due to changes in ultraviolet radiation

Kniveton, D. R., Todd, M. C., Sciare, J. and Mihalopoulos, N. (2003) Variability of atmospheric dimethylsulphide over the southern Indian Ocean due to changes in ultraviolet radiation. Global Biogeochemical Cycles, 17 (4). pp. 1-7. ISSN 0886-6236

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Abstract

Dimethylsulphide (DMS) is a climatically important component of global biogeochemical cycles, through its role in the sulphur cycle. Changes in ultraviolet radiation (UV) exhibit both positive and negative forcings on the dynamics of production and turnover of DMS and its precursor dimethylsulphoniopropionate (DMSP). In this study we investigate the net forcing of UV on atmospheric DMS. The work is based on a 10-year record of observed DMS at Amsterdam Island in the southern Indian Ocean, and satellite based retrievals of surface UV and photosynthetically active radiation (PAR). The results show an inverse relationship between UV radiation and atmospheric DMS associated with extreme changes (defined as the greatest 5%) in daily UV, independent of changes in wind speed, sea surface temperature and PAR.

Item Type: Article
Schools and Departments: School of Global Studies > Geography
Subjects: Q Science > QH Natural history
Depositing User: SRO Admin
Date Deposited: 22 Jan 2008
Last Modified: 07 Mar 2017 08:35
URI: http://sro.sussex.ac.uk/id/eprint/1693
Google Scholar:9 Citations

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