TY  - JOUR
AU  - Masson-Delmotte V, Stenni B.
PY  - 2010//
TI  - Abrupt change of Antarctic moisture origin at the end of Termination II
T2  - Proc. Natl. Acad. Sci. U.S.A.
JO  - Proceedings of the National Academy of Sciences
SP  - 12091
EP  - 12094
VL  - 107
IS  - 27
N2  - The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of events involved in Termination II, the transition between the penultimate glacial and interglacial periods. This termination is marked by a northsouth seesaw behavior, with first a slow methane concentration rise associated with a strong Antarctic temperature warming and a slow deuterium excess rise. This first step is followed by an abrupt north Atlantic warming, an abrupt resumption of the East Asian summer monsoon, a sharp methane rise, and a CO2 overshoot, which coincide within dating uncertainties with the end of Antarctic optimum. Here, we show that this second phase is marked by a very sharp Dome C centennial deuterium excess rise, revealing abrupt reorganization of atmospheric circulation in the southern Indian Ocean sector.
SN  - 0027-8424
UR  - http://dx.doi.org/10.1073/pnas.0914536107
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=2716), last updated on Tue, 09 Jul 2024 00:00:43 +0200
ID  - Masson-DelmotteV2010
ER  -