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Overigens is die 30% afname niet onomstreden. Van Realclimate:
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They show that the amount of deep return flow seems to have gone down about 8 Sv (out of 25 Sv), and the amount of mid-ocean to surface transport has gone up by about the same amount. This corresponds to a roughly 30% apparent weakening in the so-called "Thermohaline Circulation" (see our previous discussion here).
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It should be stressed that should this be a sustained feature (and not affected by the +/- 6 Sv uncertainty estimated in the paper), this would be extremely significant. Modelling experiments suggest that this kind of decrease should be associated with a decrease in ocean temperatures in the North Atlantic of up to 2°C or so, and maybe 0.5° over Europe. Since these changes have not been observed (both the North Atlantic and Europe have warmed significantly over this time period), it might be premature to assert that the circulation definitely has changed.
met andere woorden: 75% van de gemeten verandering valt binnen de geschatte foutmarge, en de verwachte gevolgen van een dergelijke verandering zijn (nog) niet waargenomen; sterker nog, het tegenovergestelde van het verwachte heeft plaatsgevonden.
Maar absoluut een mooi topic