http://www.tgdaily.com/content/view/40950/113/Scotia Sea - A three month study began last Wednesday as a geoengineering expedition set sail for the waters off Antarctica. Despite UN objections, the Indian-German expedition is seeking to validate one theory on CO2 sequestering. Can iron injected into the ocean waters help a massive plankton bloom solve man's CO2 problem and subsequent global warming?
The LOHAFEX experiment plans to spread out 20 tons of iron sulphate particles over a 300 square kilometer region of the northern Antarctica waters, a place called Scotia Sea. The particles are being added to the oceanic waters as part of a test to see if rapid plankton growth in iron-deficient waters can help absorb carbon from the atmosphere into their bodies. Theoretically, once they die they will fall to the bottom of the ocean taking the trapped carbon with them.
According to their website, the rationale behind this effort is study. The site reads, "The spreading of tonnes of iron over the southern ocean is expected to trigger oversized blooms of phytoplankton. The team of physicists, chemists, biologists and geochemists will then study for seven weeks the effects of the algal bloom on the exchange of carbon dioxide (CO2) between ocean and atmosphere as well as on the planktonic food chain and the organisms of the underlying sea floor."
While this theory is one of the leading "global warming reversal" ideas, it is not known how much of the plankton will make it to the bottom of the ocean. In addition, it is believed the carbon will be sequestered there "for decades," but not indefinitely. This could cause a future re-release trapping carbon back in the active environmental system.
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