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A tree-ring based reconstruction of summer relative humidity variability in eastern Mongolian Plateau and its associations with the Pacific and Indian Oceans
Liu, Na1,3; Liu, Yu1,2; Bao, Guang2,3; Bao, Ming4; Wang, Yanchao5; Ge, Yuxiang6; Zhang, Lizhi6; Bao, Wurigen6; Tian, Heng6
2015-11-15
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号438期号:2015页码:113-123
文章类型Article
摘要

A regional chronology (RC) based on tree-ring-width data at two sites was developed for the southern Hulun Buir Sandy Land, a marginal area of the eastern Mongolian Plateau, China. This chronology significantly and positively correlated with the relative humidity from the previous December to September, except in May. The highest correlation of the RC with the mean June-August relative humidity suggested that the growth of Pinus sylvestris var. mongolica strongly reflects seasonal moisture conditions. Consequently, the variation in the mean June-August relative humidity was reconstructed for the reliable time period of 1835-2013; 41.6% of the variance occurred during the calibration period of 1953-2012. Similar patterns of drought and pluvial fluctuations were found in other tree-ring-based moisture reconstructions. Our reconstruction implied that the characteristics of regional hydroclimatic variations, such as the drought and low humidity of the late 1990s to 2000s, were not unusual from the long-term perspective, as suggested by the hydrological records obtained from tree-ring material. Spectrum analyses results and significant spatial correlations of our relative humidity reconstruction with the sea surface temperature (SST) in the eastern equatorial Pacific Ocean and tropical Indian Ocean implied close linkages between moisture in the eastern Mongolian Plateau and remote oceans. When the SST related to the El Nino-Southern Oscillation was high (low), the intensity of the Indian summer monsoon at the northern extremities weakened (strengthened). Thus, moisture decreased (i.e., the relative humidity was low) in North China and in our study area. The low land-sea thermal contrast between Asia and the Indian Ocean due to the enhanced SSTs in the tropical Indian Ocean also influenced the strength of the moisture transfer via the Indian summer monsoon, thereby reducing the moisture variations in the eastern Mongolian Plateau. (C) 2015 Elsevier B.V. All rights reserved.

关键词Tree-ring Width Hulun Buir Sandy Land Eastern Mongolian Plateau Relative Humidity Reconstruction Teleconnection
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.palaeo.2015.08.003
关键词[WOS]Qinghai-tibetan Plateau ; Drought Severity Index ; Inner-mongolia ; North China ; Precipitation Reconstruction ; Surface-temperature ; Climate Variability ; Ad ; Monsoon ; Asia
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000362613300009
出版者ELSEVIER SCIENCE BV
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9244
专题现代环境研究室
通讯作者Liu, Yu
作者单位1.Xi An Jiao Tong Univ, Dept Environm Sci & Technol, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.Baoji Univ Arts & Sci, Key Lab Disaster Monitoring & Mech Simulating Sha, Baoji 721013, Peoples R China
4.Dalian Dev Zone, Middle Sch 11, Dalian 116635, Peoples R China
5.Xingtai Univ, Dept Geog, Xingtai 054001, Peoples R China
6.Honghuaeiji Forestry Bur Inner Mongolia, Honghuaedi 021112, Peoples R China
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Liu, Na,Liu, Yu,Bao, Guang,et al. A tree-ring based reconstruction of summer relative humidity variability in eastern Mongolian Plateau and its associations with the Pacific and Indian Oceans[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2015,438(2015):113-123.
APA Liu, Na.,Liu, Yu.,Bao, Guang.,Bao, Ming.,Wang, Yanchao.,...&Tian, Heng.(2015).A tree-ring based reconstruction of summer relative humidity variability in eastern Mongolian Plateau and its associations with the Pacific and Indian Oceans.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,438(2015),113-123.
MLA Liu, Na,et al."A tree-ring based reconstruction of summer relative humidity variability in eastern Mongolian Plateau and its associations with the Pacific and Indian Oceans".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 438.2015(2015):113-123.
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