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Nov
18
2009
Ocean absorbs billions of tons of man-made carbon each year
Order viagra online, Researchers have pieced together a history of the ocean’s absorption of industrial-era carbon, published this week in Nature.
The ocean sucks up a large fraction of carbon dioxide emissions, but figuring out exactly how much has been difficult. A team used records of ocean temperature, buy viagra online, Køb billige viagra, salinity, chemical tracers, Nevada NV Nev. , Acheter viagra discount, and other data, as well as models of ocean mixing, cheap viagra overnight delivery, Viagra, to estimate the amount of carbon from anthropogenic sources entering the ocean since 1765.
As of 2008, the ocean contained 140 billion metric tons of anthropogenic carbon and was taking in 2.3 billion tons more per year, cheap viagra, Idaho ID , the researchers report. The amount absorbed annually has shot up over the last half-century, viagra farmacia a buon mercato, Acheter viagra, but the rate has been increasing slightly less quickly since the 1980s. Because of large uncertainties, that recent slowdown may not be statistically significant, where to buy cheap viagra, Connecticut CT Conn. , says co-author Timothy Hall of the NASA Goddard Institute for Space Studies. However, ordering viagra no prescription, Oklahoma OK Okla. , he says, it is consistent with expectations that the ocean’s ability to take up carbon dioxide will eventually saturate.
The team also found that the land turned from a carbon dioxide source to a sink around the 1940s, ordering viagra no rx. Pharmacy viagra, One possible explanation is that the increased carbon dioxide in the atmosphere is providing more “food” for photosynthesis, leading to a fertilization effect, goedkope viagra apotheek, Ordering viagra online without prescription, says Hall. – Roberta Kwok
Source: Khatiwala, Arkansas AR Ark. , Acheter viagra bon marché, S., Primeau, αγοράζουν φτηνά viagra, Order viagra cod, F., & Hall, viagra for sale, Buy viagra without prescription, T. (2009), acquistare a buon mercato viagra. Reconstruction of the history of anthropogenic CO2 concentrations in the ocean Nature, 462 (7271), 346-349 DOI: 10.1038/nature08526
Image © MichaelJay, iStockPhoto.com
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