The LGM surface climate and atmospheric circulation over East Asia and the North Pacific in the PMIP2 coupled model simulations

W. Yanase (1) , A. Abe-Ouchi (1, 2)

1 CCSR - Center for Climate System Research [Kashiwa]
2 FRCGC - Frontier Research Center for Global Change

The surface climate and atmospheric circulation over East Asia and the North Pacific at the last glacial maximum has been investigated using the outputs from several coupled atmosphere-ocean general circulation model in PMIP2 database. In boreal summer, the weakening of high pressure over the North Pacific and less precipitation over East Asia are analyzed in most models. The reduced moisture transport seems to result in the less precipitation over East Asia. In boreal winter, the intensification of the Aleutian low and southward shift of the upper-level jet are analyzed in most models. Some of these results are consistent with geological records such as pollen, lake status and dust transport.

Domaines: Interfaces continentales, environnement; Sciences de la Terre

W. Yanase, A. Abe-Ouchi. The LGM surface climate and atmospheric circulation over East Asia and the North Pacific in the PMIP2 coupled model simulations. Climate of the Past Discussions, 2007, 3 (2), pp.655-678. ⟨hal-00298183⟩