Large-scale freshening of intermediate waters in the Pacific and Indian oceans

Article Abstract:

Changes in the temperature and salinity structure of the Atlantic Ocean indicate that circulation and water mass properties have significant variability. Earlier results from the south Pacific Ocean and Tasman Sea showing coherent warming were extended to Norther Pacific Intermediate Water (NPIW) and Antarctic Intermediate Water (AAIW), using zonal sections from the World Ocean Circulation Experiment (WOCE). The combined changes indicate a strengthening of the hydrological cycle during the past 22 years.

Hydrology

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Sulphur in the mix

Article Abstract:

Simo and Pedros-Alio have provided evidence that the depth of sea-surface mixing, may control dimethylsulphide (DMS) production and concentration. Oceanic DMS emissions are the major biogenic source of sulphur to the atmosphere, believed to have a cooling effect on global climate. The studies show that the mixing of the upper ocean can have important effects on biological and biogeochemical processes.

Sulfur, Biogeochemistry

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