Mathematics – Logic
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3114307t&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 14, CiteID L14307
Mathematics
Logic
18
Oceanography: Biological And Chemical: Gases, Atmospheric Composition And Structure: Air/Sea Constituent Fluxes (3339, 4504), Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions, Atmospheric Composition And Structure: Constituent Sources And Sinks, Global Change: Biogeochemical Processes (4805)
Scientific paper
The IronEx studies showed that in situ addition of iron in ``high-nitrate-low-chlorophyll'' regions of the Pacific Ocean increased the amount of dimethylsulfide (DMS) available for emission to the atmosphere. Here we show results from two similar experiments in the Southern Ocean (SOIREE, 61°S and EisenEx, 48°S). DMS concentrations increased up to 8-fold and we find marked similarity in the changes in dimethylsulfonioproprionate (the algal precursor of DMS) during the Pacific and Southern Ocean experiments, despite large differences in algal community, temperature, light and mixed layer depth. These results may lend support to a link between paleo-climatic variations in iron availability, emissions of DMS and, hence, atmospheric albedo and global temperature. Further, if large-scale iron fertilization is to be considered as a strategy for mitigating the increase in man-made CO2 in the atmosphere then the climatic affects of DMS and a number of other trace gases must be assessed.
Harvey Matthew J.
Law Cliff S.
Liss Peter S.
Nightingale Philip D.
Turner Michael S.
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