DOI: 10.1002/2017MS001056
Scopus记录号: 2-s2.0-85029010117
论文题名: Simulating climate and stable water isotopes during the Last Interglacial using a coupled climate-isotope model
作者: Gierz P ; , Werner M ; , Lohmann G
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 5 起始页码: 2027
结束页码: 2045
语种: 英语
英文关键词: Climate change
; Greenhouse gases
; Isotopes
; Anthropogenic climate changes
; Indian subcontinents
; Interglacial climate
; Last interglacial
; Orbital configuration
; Paleoclimates
; Quantitative interpretation
; Stable water isotopes
; Climate models
; climate modeling
; climate variation
; complexity
; greenhouse gas
; Last Interglacial
; oxygen isotope
; paleoclimate
; stable isotope
; water
; Atlantic Ocean
; Atlantic Ocean (Tropical)
; India
; Pacific Ocean
; Sahel [Sub-Saharan Africa]
; Southern Ocean
英文摘要: Understanding the dynamics of warm climate states has gained increasing importance in the face of anthropogenic climate change, and while it is possible to simulate warm interglacial climates, these simulated results cannot be evaluated without the aid of geochemical proxies. One such proxy is δ18O, which allows for inference about both a climate state's hydrology and temperature. We utilize a stable water isotope equipped climate model to simulate three stages during the Last Interglacial (LIG), corresponding to 130, 125, and 120 kyr before present, using forcings for orbital configuration as well as greenhouse gases. We discover heterogeneous responses in the mean δ18O signal to the climate forcing, with large areas of depletion in the LIG δ18O signal over the tropical Atlantic, the Sahel, and the Indian subcontinent, and with enrichment over the Pacific and Arctic Oceans. While we find that the climatology mean relationship between δ18O and temperature remains stable during the LIG, we also discover that this relationship is not spatially consistent. Our results suggest that great care must be taken when comparing δ18O records of different paleoclimate archives with the results of climate models as both the qualitative and quantitative interpretation of δ18O variations as a proxy for past temperature changes may be problematic due to the complexity of the signals. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75739
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Helmholtz Center for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany
Recommended Citation:
Gierz P,, Werner M,, Lohmann G. Simulating climate and stable water isotopes during the Last Interglacial using a coupled climate-isotope model[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(5)