DOI: 10.1016/j.quascirev.2018.07.027
Scopus记录号: 2-s2.0-85052889538
论文题名: Simulating the Last Interglacial Greenland stable water isotope peak: The role of Arctic sea ice changes
作者: Malmierca-Vallet I. ; Sime L.C. ; Tindall J.C. ; Capron E. ; Valdes P.J. ; Vinther B.M. ; Holloway M.D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 198 起始页码: 1
结束页码: 14
语种: 英语
Scopus关键词: Climate change
; Distillation
; Oceanography
; Sea ice
; Surface waters
; Arctic sea ice
; Climate simulation
; Coupled atmosphere ocean general circulation model
; Last interglacial
; Northern Hemispheres
; Sea surface temperature (SST)
; Stable water isotopes
; Water vapour
; Isotopes
; distillation
; GRIP
; ice core
; ice retreat
; ice sheet
; isotopic analysis
; Last Interglacial
; Northern Hemisphere
; oxygen isotope
; sea ice
; stable isotope
; Arctic
; Greenland
英文摘要: Last Interglacial (LIG), stable water isotope values (δ18O) measured in Greenland deep ice cores are at least 2.5‰ higher compared to the present day. Previous isotopic climate simulations of the LIG do not capture the observed Greenland δ18O increases. Here, we use the isotope-enabled HadCM3 (UK Met Office coupled atmosphere-ocean general circulation model) to investigate whether a retreat of Northern Hemisphere sea ice was responsible for this model-data disagreement. Our results highlight the potential significance of sea ice changes on the LIG Greenland isotopic maximum. Sea ice loss in combination with increased sea surface temperatures, over the Arctic, affect δ18O: water vapour enriched in heavy isotopes and a shorter distillation path may both increase δ18O values over Greenland. We show, for the first time, that simulations of the response to Arctic sea ice reduction are capable of producing the likely magnitude of LIG δ18O increases at NEEM, NGRIP, GIPS2 and Camp Century ice core sites. However, we may underestimate δ18O changes at the Renland, DYE3 and GRIP ice core locations. Accounting for possible ice sheet changes is likely to be required to produce a better fit to the LIG ice core δ18O values. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112046
Appears in Collections: 气候减缓与适应
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作者单位: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom; School of Geographical Sciences, University of Bristol, University Road, Bristol, BS8 1SS, United Kingdom; School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen, DK-2900, Denmark
Recommended Citation:
Malmierca-Vallet I.,Sime L.C.,Tindall J.C.,et al. Simulating the Last Interglacial Greenland stable water isotope peak: The role of Arctic sea ice changes[J]. Quaternary Science Reviews,2018-01-01,198