The relationship between DMS flux and CCN concentration in remote marine regions
Journal Article
·
· Journal of Geophysical Research
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
The relationship between the steady cloud condensation nuclei (CCN) concentration and the dimethylsulfide (DMS) emission flux in remote marine regions is investigated by modeling the principal gas-, aerosol-, and aqueous-phase processes in the marine boundary layer (MBL). Results are in reasonable quantitative agreement with the available measurements of DMS, SO2, H2SO4,CCN, and condensation nuclei (CN) concentrations in remote marine regions of the globe and suggest that indeed DMS plays a major role in the particle dynamics of the MBL. For sufficiently low DMS fluxes practically all the SO2 produced by DMS photooxidation is predicted to be heterogeneously converted to sulfate in sea-salt aerosol particles. For DMS fluxes higher than approximately 2.5 micromoles/sq m/d a linear relationship is found to exist between the CCN number concentration and the DMS flux.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 57373
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: D8 Vol. 99; ISSN JGREA2; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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