An Oceanic Cold Reversal

• Main Authors: During The Last, Barbara Stenni, Valerie Masson-delmotte, Sigfus Johnsen, Jean Jouzel, Antonio Longinelli, Eric Monnin, Regine Röthlisberger, Enrico Selmo
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Greenland; Indian; Taylor Dome; Antarc*; Antarctica; Ice cap
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.7.9972; http://www.climate.unibe.ch/pdf/Stenni_et_al.pdf

of the Younger Dryas (a warming in inland Antarctic records at 12.5 ky B.P., when Greenland cools abruptly) is consistent with the idea of a seesaw behavior of the Atlantic thermohaline circulation (6 ), caused by a massive discharge of ice cap meltwater, which shut down thermohaline circulation, resulting in a rapid cooling in the north and a warming in the south. Some ocean sediment records in the subantarctic southern Indian Ocean show a cold reversal, similar to Antarctic records (7 ). Recent high-resolution isotopic records obtained on East Antarctic cores both from a near-coastal site at Taylor Dome (8) and from inland at the Dome Concordia site (9), confirm that the overall deglacial pattern is asynchronous between Greenland and Antarctica. Those recent results, however, suggest that the picture of a temperature seesaw may be too simplistic (the two periods of warming in Antarctica lead the abrupt transitions in Greenland, whereas the cooling after 14 ky B.P. is roughly in phas