Millennial meridional dynamics of the Indo-Pacific Warm Pool during the last termination
| Type | Article | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | 2014-12-23 | ||||||||||||
| Language | English | ||||||||||||
| Author(s) | Lo L.1, Shen C. -C.1, Wei K. -Y.1, Burr G. S.1, 2, Mii H. -S.3, Chen M. -T.4, Lee S. -Y.5, Tsai M. -C.1 | ||||||||||||
| Affiliation(s) | 1 : Natl Taiwan Univ, Dept Geosci, High Precis Mass Spectrometry & Environm Change L, Taipei 10617, Taiwan. 2 : Univ Arizona, Dept Phys, NSF Arizona Accelerator Mass Spectrometry Facil, Tucson, AZ 85721 USA. 3 : Natl Taiwan Normal Univ, Dept Earth Sci, Taipei 11677, Taiwan. 4 : Natl Taiwan Ocean Univ, Inst Appl Geosci, Keelung 20224, Taiwan. 5 : Acad Sinica, Res Ctr Environm Changes, Taipei 11529, Taiwan. |
||||||||||||
| Source | Climate Of The Past (1814-9324) (Copernicus Gesellschaft Mbh), 2014-12-23 , Vol. 10 , N. 6 , P. 2253-2261 | ||||||||||||
| DOI | 10.5194/cp-10-2253-2014 | ||||||||||||
| WOS© Times Cited | 13 | ||||||||||||
| Abstract | To develop an in-depth understanding of the natural dynamics of the Indo-Pacific Warm Pool (IPWP) during the last deglaciation, stacked north-(N-) and south-IPWP (S-IPWP) thermal and hydrological records over the past 23-10.5 ka were built using planktonic foraminiferal geochemistry data from a new core, MD05-2925 (9.3 degrees S, 151.5 degrees E, water depth 1661 m) in the Solomon Sea and eleven previous sites. Ice-volume-corrected seawater delta O-18 (delta O-18(SW-IVC)) stacks show that S-IPWP delta O-18(SW-IVC) values are indistinguishable from their northern counterparts through glacial time. The N-IPWP SST (sea surface temperature) stacked record features an increasing trend of 0.5 degrees C ka(-1) since 18 ka. Its S-IPWP counterpart shows an earlier onset of temperature increase at 19 ka and a strong teleconnection to high-latitude climate in the Southern Hemisphere. Meridional SST gradients between the N- and S-IPWP were 1-1.5 degrees C during the Bolling/Allerod period and 1 degrees C during both Heinrich event 1 and the Younger Dryas, due to a warmer S-IPWP. A warm S-IPWP during the cold events could weaken the southern hemispheric branch of the Hadley cell and reduce precipitation in the Asian monsoon region. | ||||||||||||
| Full Text |
|