Will Ocean Fertilization Work?

Abstract
Iron fertilization of the ocean is widely discussed as a possible strategy for extracting COfrom the atmosphere. In their Perspective, [Buesseler and Boyd][1] analyze the results from recent fertilization experiments in the Southern Ocean. They conclude that sequestration of 30% of the carbon released annually as a result of human activities would require a region more than an order of magnitude larger than the entire area of the Southern Ocean. Iron fertilization may not be a commercially attractive option if impacts on sequestration are as low as observed to date. [1]: http://www.sciencemag.org/cgi/content/full/300/5616/67