Robotic Observations of Enhanced Carbon Biomass and Export at 55°S During SOFeX
- 16 April 2004
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 304 (5669) , 417-420
- https://doi.org/10.1126/science.1087717
Abstract
Autonomous floats profiling in high-nitrate low-silicate waters of the Southern Ocean observed carbon biomass variability and carbon exported to depths of 100 m during the 2002 Southern Ocean Iron Experiment (SOFeX) to detect the effects of iron fertilization of surface water there. Control and “in-patch” measurements documented a greater than fourfold enhancement of carbon biomass in the iron-amended waters. Carbon export through 100 m increased two- to sixfold as the patch subducted below a front. The molar ratio of iron added to carbon exported ranged between 10 4 and 10 5 . The biomass buildup and export were much higher than expected for iron-amended low-silicate waters.Keywords
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