19 June 2007

 

First Buoy to Monitor Ocean Acidification Launched

The first buoy to monitor ocean acidification has been launched in the Gulf of Alaska. Attached to the 3-metre-diameter buoy are sensors to measure climate indicators. These transmit their readings via satellite.

Acidification is a result of carbon dioxide absorbed by the seas.

"The instruments will measure the air-sea exchange of carbon dioxide, oxygen and nitrogen gas in addition to the pH, a measure of ocean acidity, of the surface waters," said Steven Emerson of the University of Washington, the project's lead scientist. "This is the first system specifically designed to monitor ocean acidification."

The buoy is anchored in water nearly 5,000 meters deep.

The goal of the research is to examine how ocean circulation and ecosystems interact to determine how much carbon dioxide the north Pacific Ocean absorbs each year.

"The Gulf of Alaska region is particularly important because it is likely to be one of the first regions to feel the impacts of ocean acidification," said Christopher Sabine, a PMEL oceanographer.

"This a significant step in furthering our understanding of how the ocean is reacting to carbon dioxide, as well as an important addition to the growing Global Ocean Observing System of Systems, which incorporates the best technology to provide the best science to help decision makers and the general public," said Richard Spinrad, assistant administrator of NOAA's Office of Oceanic and Atmospheric Research.

Further Reading:
National Science Foundation

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