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  • Measurements of dimethylsulphide (DMS) and aerosol chemical composition over the North Atlantic and the Northwest African upwelling system : Natural and anthropogenic impacts

Abstract

Measurements of dimethylsulphide (DMS) and aerosol chemical composition were performed in September/October 1992 on a cruise from Halifax (Canada) to the Northwest African Upwelling System (NWAU) in the vicinity of the Canary Islands and back to Halifax. A significant difference in DMS(water) concentrations and DMS sea-to-air fluxes was found between the Atlantic transect and the NWAU. The increased DMS sea-to-air flux in the upwelling area compared to the Atlantic transects was due to a moderate increase in DMS(water) and enhanced wind speeds. A lifetime calculation for atmospheric DMS, based on a box-model approach, yielded a value of 37 hours for marine air.

Additional information

Authors: GRÖNE T, JRC Ispra (IT);JENSEN N R, JRC Ispra (IT);HJORTH J, JRC Ispra (IT);ANDREAE M O, Max-Planck-Institute for Chemistry, Biogeochemistry Department, Mainz (DE)
Bibliographic Reference: Article: Journal of Geophysical Research
Record Number: 199510968 / Last updated on: 1995-08-10
Category: PUBLICATION
Original language: en
Available languages: en