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...
Published in: | Geophysical Research Letters |
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Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
Amer Geophysical Union
2005
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Subjects: | |
Online Access: | https://doi.org/10.1029/2004GL021903 https://archimer.ifremer.fr/doc/00230/34087/32518.pdf https://archimer.ifremer.fr/doc/00230/34087/ |
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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