DOI: 10.1016/j.quascirev.2013.12.018
Scopus记录号: 2-s2.0-84892878491
论文题名: CO2 radiative forcing and Intertropical Convergence Zone influences on western Pacific warm pool climate over the past 400ka
作者: Tachikawa K. ; Timmermann A. ; Vidal L. ; Sonzogni C. ; Timm O.E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 86 起始页码: 24
结束页码: 34
语种: 英语
英文关键词: CO2 forcing
; Mg/Ca-SST
; Transient model simulation
; Western Pacific warm pool
Scopus关键词: Air temperature variations
; Atmospheric circulation
; Global-mean temperature
; Intertropical convergence zone
; Sea surface temperature (SST)
; Surface temperature changes
; Transient model
; Western Pacific Warm Pool
; Atmospheric radiation
; Atmospheric temperature
; Carbon dioxide
; Climate change
; Greenhouse gases
; Printing machinery
; Salinity measurement
; Oceanography
; air temperature
; air-sea interaction
; atmospheric circulation
; atmospheric forcing
; benthic foraminifera
; carbon dioxide
; climate conditions
; intertropical convergence zone
; oxygen isotope
; paleoclimate
; radiation balance
; reconstruction
; sea surface temperature
; Bismarck Sea
; Pacific Ocean
; Pacific Ocean (West)
英文摘要: The western Pacific warm pool (WPWP) is an important heat source for the atmospheric circulation and influences climate conditions worldwide. Estimating WPWP sensitivity to past radiative forcing perturbations is important for understanding the magnitudes and patterns of current and projected tropical climate change. Here we present a new Mg/Ca-based sea surface temperature (SST) reconstruction over the past 400ka from the Bismarck Sea, off Papua New Guinea, along with benthic foraminiferal δ18O records and a transient intermediate complexity earth system model simulation. The Mg/Ca-SST record exhibits a close similarity with atmospheric CO2 content for the whole study period. Our model analysis demonstrates that greenhouse gas forcing is the primary driver for glacial/interglacial SST changes in the entire WPWP region. Mg/Ca-SST in the Bismarck Sea also includes a weaker precessional component, which covaries with reconstructed and simulated local precipitation, and simulated surface currents. We propose that orbitally driven latitudinal shifts of the Intertropical Convergence Zone and oceanic heat advection are responsible for this residual SST variability. On glacial timescales the reconstructed WPWP surface temperature changes over the past 400ka are highly correlated with East Antarctic air temperature variations. The strong effect of greenhouse gas forcings on both records and on global mean temperature variability allows us to determine a scaling factor of 1-1.5 between reconstructed WPWP temperature anomalies and estimates of the global mean temperature. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60384
Appears in Collections: 过去全球变化的重建
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作者单位: Aix-Marseille Université, CNRS, IRD, CEREGE UM34, 13545 Aix en Provence, France; IPRC, SOEST, University of Hawaii, Honolulu, HI 96822, United States; DAES, University at Albany, Albany, NY 12220, United States
Recommended Citation:
Tachikawa K.,Timmermann A.,Vidal L.,et al. CO2 radiative forcing and Intertropical Convergence Zone influences on western Pacific warm pool climate over the past 400ka[J]. Quaternary Science Reviews,2014-01-01,86