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	千百年尺度气候快速变化及其数值模拟研究进展
其他题名	Progress in Rapid Climate Changes and Their Modeling Study in Millennial-and Centennial Scales
	靳立亚; 陈发虎
发表日期	2007
ISSN	1001-8166
卷号	22 期号:10 页码:1054-1065
中文摘要	千百年尺度全球气候快速变化是古气候研究中的一个重要内容。研究发现,末次冰期和全新世都存在着千年、百年尺度的快速气候变化,其变化幅度可以达到典型的地质变化或天文因子所造成的冰期/间冰期的气候振荡幅度,同时这些古气候事件具有全球性。对冰期和全新世气候变化的数值模拟揭示了气候系统对地球轨道参数变化的响应以及海洋、植被、冰盖、温室气体等反馈因子的重要性,其中大洋温盐环流对北大西洋淡水注入的敏感性与末次冰期和全新世气候快速变化密切相联。利用中等复杂程度的气候模式（EM IC）CLIMBER-2模拟了末次冰期典型时段（60~20ka BP）D/O和Heinrich事件以及东亚气候的响应过程。模拟研究揭示了全新世青藏高原冰雪环境对亚洲非洲季风气候的显著影响。今后的古气候模拟研究将在改进模式分辨率、结合古气候代用资料确定更加符合历史时期边界条件以进一步改善气候模式的基础上,更加注重气候突变机制的研究以及加强全球变化背景下的区域气候的长期变化研究。
英文摘要	Rapid climate changes at millennial-and centennial scales are one of the most important aspects in Paleoclimate study.It has been found that rapid climate changes at millennial-and centennial scales are a global phenomenon during both the glacial age and the Holocene with amplitudes typical for geological or astronomical time-scales.Simulations of glacial and Holocene climate changes have demonstrated the response of climate system to the Earth orbital forcing and the importance of variations in feedbacks of ocean,vegetation cover,continental ice sheets and greenhouse gases.Modeling experiments suggest that the Atlantic thermohaline circulation was sensitive to the freshwater inputting into the North Atlantic and was closely related to the rapid climate changes during the last glacial age and the Holocene.By using the Earth-system models of intermediate complexity(EMICs),CLIMBER-2,the response of East Asian climate change to Dansgaard/Oeschger and Heinrich events during the typical Last Glacial period(60-20kyrBP)and impacts of snow and glaciers over the Tibetan Plateau on Holocene climate change were studied.Further progress of paleoclimate modeling depends on developing finer-grid models and reconstructing more reliable boundary conditions.More attentions should be paid to the study of mechanisms of abrupt climate changes as well as regional climate changes on the basis of global climate change.
关键词	快速气候变化古气候数值模拟气候变化机制
英文关键词	Rapid climate change;Paleoclimate modeling;Mechanism of climate change.
语种	中文
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
CSCD记录号	CSCD:2959908
来源期刊	地球科学进展
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1807
推荐引用方式 GB/T 7714	靳立亚,陈发虎. 千百年尺度气候快速变化及其数值模拟研究进展[J]. 兰州大学, 中国科学院青藏高原研究所,2007,22(10):1054-1065.
APA	靳立亚,&陈发虎.(2007).千百年尺度气候快速变化及其数值模拟研究进展.地球科学进展,22(10),1054-1065.
MLA	靳立亚,et al."千百年尺度气候快速变化及其数值模拟研究进展".地球科学进展 22.10(2007):1054-1065.