干旱区生态环境知识资源中心(Arid): The PMIP3 Simulated Climate Changes over Arid Central Asia during the Mid-Holocene and Last Glacial Maximum

Arid

	The PMIP3 Simulated Climate Changes over Arid Central Asia during the Mid-Holocene and Last Glacial Maximum
	Xu Hongna; Wang Tao; Wang Huijun; Miao Jiapeng; Chen Jianhui; Chen Shengqian
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2020
卷号	94 期号:3 页码:725-742
英文摘要	In this study, the climate changes over Arid Central Asia (ACA) during the mid-Holocene (approximately 6,000 calendar years ago, MH) and the Last Glacial Maximum (approximately 21,000 calendar years ago, LGM) were investigated using multimodel simulations derived from the Paleoclimate Modelling Intercomparison Project Phase 3 (PMIP3). During the MH, the multimodel median (MMM) shows that in the core region of ACA, the regionally averaged annual surface air temperature (SAT) decreases by 0.13℃ and annual precipitation decreases by 3.45%, compared with the preindustrial (PI) climate. The MMM of the SAT increases by 1.67/0.13℃ in summer/autumn, whereas it decreases by 1.23/1.11℃ in spring/winter. The amplitude of the seasonal cycles of the SAT increases over ACA due to different MH orbital parameters. For precipitation, the regionally averaged MMM decreases by 5.77%/5.69%/0.39%/5.24% in spring/ summer/autumn/winter, respectively. Based on the analysis of the aridity index (AI), compared with the PI, a drier climate appears in southern Central Asia and western Xinjiang due to decreasing precipitation. During the LGM, the MMM shows that the regionally averaged SAT decreases by 5.04/4.36/4.70/5.12/5.88℃ and precipitation decreases by 27.78%/ 28.16%/31.56%/27.74%/23.29% annually and in the spring, summer, autumn, and winter, respectively. Robust drying occurs throughout almost the whole core area. Decreasing precipitation plays a dominant role in shaping the drier conditions, whereas strong cooling plays a secondary but opposite role. In response to the LGM external forcings, over Central Asia and Xinjiang, the seasonal cycle of precipitation has a smaller amplitude compared with that under the PI climate. In the model-data comparison, the simulated MH moisture changes over ACA are to some extent consistent with the reconstructions, further confirming that drier conditions occurred during that period than during the PI.
英文关键词	PMIP3 climate changes Arid Central Asia mid-Holocene Last Glacial Maximum
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:6748295
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336301
作者单位	Xu Hongna, Nanjing University of Information Science and Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing, Jiangsu 210044, China.; Wang Tao, Nanjing University of Information Science and Technology;;Climate Change Research Center,Chinese Academy of Sciences;;Nansen-Zhu International Research Center,Institute of Atmospheric Physics,Chinese Academy of Sciences, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters;;;;, Nanjing;;;;, ;;Beijing;;Beijing 210044;;100029;;100029.; Wang Huijun, Nanjing University of Information Science and Technology;;Climate Change Research Center,Chinese Academy of Sciences;;Nansen-Zhu International Research Center,Institute of Atmospheric Physics,Chinese Academy of Sciences;;Nanjing University of Information Science and Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters;;;;;;Jiangsu Key Laboratory of Meteorological Disaster, Nanjing;;;;;;Na...
推荐引用方式 GB/T 7714	Xu Hongna,Wang Tao,Wang Huijun,et al. The PMIP3 Simulated Climate Changes over Arid Central Asia during the Mid-Holocene and Last Glacial Maximum[J],2020,94(3):725-742.
APA	Xu Hongna,Wang Tao,Wang Huijun,Miao Jiapeng,Chen Jianhui,&Chen Shengqian.(2020).The PMIP3 Simulated Climate Changes over Arid Central Asia during the Mid-Holocene and Last Glacial Maximum.Acta Geologica Sinica,94(3),725-742.
MLA	Xu Hongna,et al."The PMIP3 Simulated Climate Changes over Arid Central Asia during the Mid-Holocene and Last Glacial Maximum".Acta Geologica Sinica 94.3(2020):725-742.