Vertical thermal structure history in the western subtropical North Pacific since the Last Glacial Maximum
Article first published online: 11 JAN 2011
Copyright 2011 by the American Geophysical Union.
Geophysical Research Letters
Volume 38, Issue 8, 28 April 2011
How to Cite
2011), Vertical thermal structure history in the western subtropical North Pacific since the Last Glacial Maximum, Geophys. Res. Lett., 38, L00F02, doi:10.1029/2010GL045827., , , and (
- Issue published online: 11 JAN 2011
- Article first published online: 11 JAN 2011
- Manuscript Accepted: 11 NOV 2010
- Manuscript Revised: 5 NOV 2010
- Manuscript Received: 12 OCT 2010
- planktonic foraminifera;
- oxygen isotope;
- western North Pacific;
 Variations in sea surface temperature (SST) and vertical thermal structure in the western subtropical North Pacific, which has the largest air-sea heat flux of the world's oceans, provide insights into the mechanisms of climate change related to air-sea interactions. Here, we present planktonic δ18O and Mg/Ca records from the western subtropical gyre of the North Pacific spanning the last 30 kyrs. The results indicate that subtropical SSTs were approximately 3°C lower during the last glacial than in the Holocene interglacial, indicating that glacial cooling occurred uniformly in the low to mid-latitudes of the western North Pacific. A decrease in intermediate depth temperatures at the late glacial suggests that the formation and/or advection of the subtropical mode water was enhanced due to a strong East Asian winter monsoon. The results suggest that the change in the thermal structure of the subtropical gyre was related to changes in East Asian monsoon activity.