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Variability of atmospheric DMS due to changes in ultraviolet light

posted on 2023-06-07, 16:45 authored by Dominic KnivetonDominic Kniveton, Martin ToddMartin Todd, J Sciare, N Milahopoulis
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.


Publication status

  • Published



Presentation Type

  • paper

Event name

Atmosphere-Ocean-Ecology dynamics in the western Indian Ocean. 19th and 20th January 2004

Event type


Department affiliated with

  • Geography Publications


Poster at the Royal Society Discussion Meeting

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Peer reviewed?

  • Yes

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