Biology and the Carbon Cycle
Dimethyl Sulfide in the High Arctic
Sangeeta Sharma, Fred Hopper, Peter C. Brickell, Michel Gosselin,
Maurice Levasseur, Natalie Simard and Timothy S. Bates
Natural and anthropogenic emissions contribute approximately equally to
the total global sulfur budget. It is estimated that up to 3050% of these
natural sulfur emissions are released from the oceans. This can be the largest
source of atmospheric sulfur in ocean regions far from anthropogenic sources
of sulfur.
Clouds
Sun
Change in
Cloud Reflectivity
Climate
Cloud Condensation
Effects
Nuclei
MSA
Non-sea-salt Sulphate
Dry or Wet
(particulate)
(particulate)
Acid Deposition
DMS
(gas)
AIR
Ventilation
OCEAN
Dissolved DMS
Algae
(gas)
Atmospheric fate of DMS, its climate effects and biogeochemical sulfur
cycling in the marine environment.
Sangeeta Sharma, Fred Hopper and Peter Brickell are with Atmospheric Environment Service, Downsview,
Ontario, Canada. Michel Gosselin is with the Dpartement d'ocanographie of the Universite du Qubec
Rimouski, Rimouski, Quebec, Canada. Maurice Levasseur and Nathalie Simard are with the Institut Maurice-
Lamontagne, Ministre des Pches et des Ocans, Mont-Joli, Quebec, Canada. Timothy Bates is with the National
Oceanic and Atmospheric Administration's Pacific Marine Environmental Laboratory, Seattle, Washington, U.S.A.
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