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

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

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3205609y&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 5, CiteID L05609

Astronomy and Astrophysics

Astronomy

4

Paleoceanography: Astronomical Forcing, Paleoceanography: El Nino (4522), Paleoceanography: Insolation Forcing, Paleoceanography: Interhemispheric Phasing, Paleoceanography: Sea Surface Temperature

Scientific paper

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°C from 21 ka to 12.8 ka implies the equatorward shift of the subarctic boundary in the northwestern Pacific by ~2.8° 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 Niño-like conditions in the tropical Pacific and the heating of the land surface of northeastern Siberia.

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