globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-013-1990-7
Scopus记录号: 2-s2.0-84905118453
论文题名:
The role of sea ice in the temperature-precipitation feedback of glacial cycles
作者: Gildor H.; Ashkenazy Y.; Tziperman E.; Lev I.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期:2017-03-04
起始页码: 1001
结束页码: 1010
语种: 英语
英文关键词: Glacial-interglacial oscillations ; Hydrological cycle ; Sea ice ; Temperature-precipitation feedback
英文摘要: The response of the hydrological cycle to climate variability and change is a critical open question, where model reliability is still unsatisfactory, yet upon which past climate history can shed some light. Sea ice is a key player in the climate system and in the hydrological cycle, due to its strong albedo effect and its insulating effect on local evaporation and air-sea heat flux. Using an atmospheric general circulation model with specified sea surface temperature and sea-ice distribution, the role of sea ice in the hydrological cycle is investigated under last glacial maximum (LGM) and present day conditions, and by studying its contribution to the "temperature-precipitation feedback". By conducting a set of sensitivity experiments in which the albedo and thickness of the sea ice are varied, the various effects of sea ice in the hydrological cycle are isolated. It is demonstrated that for a cold LGM like state, a warmer climate (as a result of reduced sea-ice cover) leads to an increase in snow precipitation over the ice sheets. The insulating effect of the sea ice on the hydrological cycle is found to be larger than the albedo effect. These two effects interact in a nonlinear way and their total effect is not equal to summing their separate contribution. © 2013 Springer-Verlag Berlin Heidelberg.
资助项目: BSF, United States - Israel Binational Science Foundation ; NSF, United States - Israel Binational Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54412
Appears in Collections:过去全球变化的重建

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作者单位: Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel; Department of Solar Energy and Environmental Physics, The Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, 84990, Israel; Department of Earth and Planetary Sciences, School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; Department of Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel

Recommended Citation:
Gildor H.,Ashkenazy Y.,Tziperman E.,et al. The role of sea ice in the temperature-precipitation feedback of glacial cycles[J]. Climate Dynamics,2014-01-01,43(2017-03-04)
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