Marine sulphur emissions

Liss, PS, Hatton, AD, Malin, G, Nightingale, PD and Turner, S (1997) Marine sulphur emissions. Philosophical Transactions of the Royal Society B: Biological Sciences, 352 (1350). pp. 159-169. ISSN 0962-8436

Full text not available from this repository. (Request a copy)

Abstract

The principal volatile sulphur species found in seawater are dimethyl sulphide (DMS), carbonyl sulphide (COS) and carbon disulphide (CS2). Of these, DMS is the most abundant and widespread in its distribution. The predominant oceanic source of DMS is dimethylsulphoniopropionate (DMSP), a compatible solute synthesized by phytoplankton for osmoregulation and/or cryoprotection. Not all species have the same ability to form DMSP; for example, diatoms generally produce little, whereas prymnesiophytes and some dinoflagellates make significantly larger amounts. Much of the release of DMSP and DMS to the water occurs on death or through predation of the plankton. Our recent field data strongly suggest that oxidation of DMS to dimethyl sulphoxide (DMSO) is an important process in the water column, and it is clear that considerable internal cycling in the DMSP/DMS/DMSO system occurs in the euphotic zone. A fraction of the DMS crosses the sea surface and enters the atmosphere where it is oxidized by radicals such as OH and NO3 to form products such as methanesulphonate (MSA), DMSO and non-sea salt sulphate (NSSS) particles. These particles are the main source of cloud condensation nuclei (CCN) over oceanic areas remote from land.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
Related URLs:
Depositing User: Rosie Cullington
Date Deposited: 07 Jun 2011 07:13
Last Modified: 27 May 2020 23:47
URI: https://ueaeprints.uea.ac.uk/id/eprint/31891
DOI: 10.1098/rstb.1997.0011

Actions (login required)

View Item View Item