Equatorward shift of the subarctic boundary in the northwestern Pacific during the last deglaciation

Type Article
Date 2005-03
Language English
Author(s) Yamamoto M1, Suemune R1, Oba T1
Affiliation(s) 1 : Hokkaido Univ, Grad Sch Environm Earth Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan.
Source Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2005-03 , Vol. 32 , N. L05609 , P. 1-4
DOI 10.1029/2004GL021903
WOS© Times Cited 47
Abstract We have generated a high-resolution record of alkenone sea surface temperature (SST) between 10-24 ka from Core MD01-2421 off central Japan, in the northwestern Pacific. The cooling by 5 degrees C from 21 ka to 12.8 ka implies the equatorward shift of the subarctic boundary in the northwestern Pacific by similar to 2.8 degrees in latitude. This shift was a result of the stronger summer Okhotsk High. The Okhotsk High was likely enhanced by the combined effects of El Nino-like conditions in the tropical Pacific and the heating of the land surface of northeastern Siberia.
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