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

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 Pacif...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Yamamoto, M, Suemune, R, Oba, T
Format: Article in Journal/Newspaper
Language:English
Published: Amer Geophysical Union 2005
Subjects:
Okhotsk
Pacific
Subarctic
Siberia
Online Access:https://archimer.ifremer.fr/doc/00230/34087/32518.pdf
https://doi.org/10.1029/2004GL021903
https://archimer.ifremer.fr/doc/00230/34087/
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Summary: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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