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Variability of atmospheric DMS due to changes in ultraviolet light
presentation
posted on 2023-06-07, 16:45 authored by Dominic KnivetonDominic Kniveton, Martin ToddMartin Todd, J Sciare, N MilahopoulisDimethylsulphide (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.
History
Publication status
- Published
External DOI
Pages
0.0Presentation Type
- paper
Event name
Atmosphere-Ocean-Ecology dynamics in the western Indian Ocean. 19th and 20th January 2004Event type
conferenceDepartment affiliated with
- Geography Publications
Notes
Poster at the Royal Society Discussion MeetingFull text available
- No
Peer reviewed?
- Yes