Carbon Cycle – the North Sea
2005年10月11日火曜日18:02:22
Carbon dioxide (CO
2) is a greenhouse gas. CO
2 is released or emitted when we use fossil fuels as an energy source. Measurements have shown that the concentration of CO
2 in the atmosphere only increases by 60 percent of our CO
2 emissions. The other 40 % are absorbed by the oceans, but not overall at the same rate, as one might have thought. The concentration of CO
2 in the atmosphere is greater that in the oceans, so it seems only natural that the water should soak some of it up.
New measurements have shown that the North Sea absorbs three times as much CO
2 than would be expected on the basis of its surface alone. Algae that grow in the surface take up CO
2 (through photosynthesis). Coastal seas like the North Sea have a much richer food chain than open Oceans, and therefore absorb CO
2 more efficiently.
See
North sea efficient sink for carbon dioxide at physorg.com:
http://www.physorg.com/news7109.html