sunnuntai 14. maaliskuuta 2010
Uusi proxytutkimus todistaa rooman ajan olleen nykyistä lämpimämpi
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"Oxygen isotope values for the two oldest bivalves in the study show a cold spell between 360 BC to 240 BC that has some of the coldest temperatures in the entire series of observations that stretch to about 1660 AD. Following this period it seems that temperatures increased rapidly such that temperatures from 230 BC are significantly higher. In fact a shell from 130 BC recorded the highest temperature in the entire 2,000-year dataset"