DOI: 10.1002/2014GL063003
论文题名: Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3
作者: Zhang X. ; Prange M. ; Merkel U. ; Schulz M.
刊名: Geophysical Research Letters
ISSN: 0094-8856
EISSN: 1944-8587
出版年: 2015
卷: 42, 期: 6 起始页码: 1903
结束页码: 1911
语种: 英语
英文关键词: Atlantic meridional overturning circulation
; Dansgaard-Oeschger events
; global climate modeling
Scopus关键词: Atmospheric temperature
; Climate change
; Climate models
; Glacial geology
; Isotopes
; Submarine geophysics
; Surface properties
; Surface waters
; Atlantic meridional overturning circulations
; Characteristic temperature
; Climate variability
; Community climate system model
; Dansgaard-oeschger events
; Global climate model
; Marine isotope stages
; Sea surface temperature (SST)
; Oceanography
; boundary condition
; climate variation
; estimation method
; marine isotope stage
; meridional circulation
; overturn
; paleoceanography
; water temperature
英文摘要: Pronounced millennial-scale climate variability during marine isotope stage 3 (MIS3) is considered to be linked to changes in the state of the Atlantic meridional overturning circulation (AMOC), i.e., a warm interstadial/cold stadial state corresponds to a strong/weak AMOC. Based on a series of freshwater hosing/extraction experiments with the state-of-the-art Community Climate System Model version 3, we construct a global spatial fingerprint of oceanic temperature anomalies in response to AMOC changes under MIS3 boundary conditions. Highest sensitivity to AMOC changes, especially in summer, is found in northeastern North Atlantic sea surface temperature, but a characteristic temperature fingerprint is also found at subsurface levels. After testing significance of the linear sea surface temperature (SST)-AMOC regressions, the model results are combined with paleo-SST records to estimate the magnitude of millennial-scale Dansgaard-Oeschger AMOC variations during MIS3. The results suggest a mean difference in AMOC strength between interstadial and (non-Heinrich) stadial states of 9.2±1.2Sv (1σ). Key Points Global footprint of MIS3 ocean temperature anomalies to AMOC changes Combination of model results with SST records to estimate MIS3 AMOC changes About 10 Sv change in AMOC strength between stadial and interstadial states ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927750098&doi=10.1002%2f2014GL063003&partnerID=40&md5=80e154c4f7648b4334fece2bd7604e60
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8472
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: MARUM-Center for Marine Environmental Sciences, Faculty of Geosciences, University of Bremen, Bremen, Germany
Recommended Citation:
Zhang X.,Prange M.,Merkel U.,et al. Spatial fingerprint and magnitude of changes in the Atlantic meridional overturning circulation during marine isotope stage 3[J]. Geophysical Research Letters,2015-01-01,42(6).