DOI: 10.1002/2014GL061639
论文题名: Dynamical changes in the tropical Pacific warm pool and zonal SST gradient during the Pleistocene
作者: Dyez K.A. ; Ravelo A.C.
刊名: Geophysical Research Letters
ISSN: 0094-9652
EISSN: 1944-9383
出版年: 2014
卷: 41, 期: 21 起始页码: 7626
结束页码: 7633
语种: 英语
英文关键词: pCO2
; temperature gradients
; tropical Pacific SST
Scopus关键词: Atmospheric chemistry
; Atmospheric temperature
; Carbon dioxide
; Surface waters
; Thermal gradients
; Tropics
; Atmospheric carbon dioxide concentration
; Circulation changes
; Late Pleistocene
; Pacific warm pool
; pCO<inf>2</inf>
; Radiative effects
; Sea surface temperature (SST)
; tropical Pacific SST
; Oceanography
; air-sea interaction
; carbon dioxide
; concentration (composition)
; oceanic circulation
; Pleistocene
; sea surface temperature
; tropical region
; upwelling
; warm pool
; zonal flow
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: In the late Pleistocene, the atmospheric carbon dioxide concentration (pCO2 ) is thought to be a primary driving force for tropical sea surface temperature (SST) change because glacial-interglacial changes in tropical Pacific SST covary with pCO2 . However, if the regional radiative effects of pCO2 were the only agent of change, tropical SST gradients should have remained similar as pCO2 varied with time. Instead, a new record of SST from the west Pacific shows that tropical SST gradients were different, even reversed, in the past, suggesting an important role for dynamical circulation changes. Specifically, changes in the temperature of upwelled source water, in addition to local pCO2 forcing, influenced tropical Pacific SST. These dynamical changes, rather than pCO2 , may have shifted the background state of the tropics and even helped set the stage for the mid-Pleistocene transition. Key Points A new high-resolution record of western tropical Pacific SST is presentedPleistocene pCO2 was not the sole driver of tropical Pacific SSTTropical Pacific SST gradients may have influenced MPT climate ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912072483&doi=10.1002%2f2014GL061639&partnerID=40&md5=08111a7113fbb741d6bf6acdac8f5e7b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6916
Appears in Collections: 气候减缓与适应
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作者单位: Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA, United States
Recommended Citation:
Dyez K.A.,Ravelo A.C.. Dynamical changes in the tropical Pacific warm pool and zonal SST gradient during the Pleistocene[J]. Geophysical Research Letters,2014-01-01,41(21).