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Abstract

Dimethylsulfide (DMS) and dimethylsulfoniopropionate (DMSP) concentrations in sea water have been measured during two cruises off the European coasts, between Las Palmas (Canaries) and Barry (Wales) in December 1993 - January 1994, and between Bordeaux (France), Cork (Ireland) and Zeebrugge (Belgium) in April - May 1994. Generally, DMS and DMSP concentrations observed above continental margins or shelves were not significantly higher than in the open ocean. On the other hand, clear latitudinal gradients were observed, with highest DMS and DMSP concentrations in warmest waters. The data obtained from these two cruises also show much higher concentrations in spring than in winter time. These results can be explained to some extent by the variations of other parameters (Chlorophyll a, phaeopigments, nutrients) simultaneously measured. From a classical sea-air exchange model and the meteorological data recorded during the cruises, the contribution of the open ocean and continental shelves to the DMS sea-air flux has been estimated.

Additional information

Authors: PUTAUD J P, JRC Ispra (IT);NGUYEN B C, Centre des Faibles Radioactivities, Gif-sur-Yvette (FR);ROYER P, Centre des Faibles Radioactivities, Gif-sur-Yvette (FR)
Bibliographic Reference: Paper presented: European Geophysical Society, XXth General Assembly, Hamburg (DE), April 3-7, 1995
Availability: Available from (1) as Paper EN 38932 ORA
Record Number: 199510666 / Last updated on: 1995-07-07
Category: PUBLICATION
Original language: en
Available languages: en