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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
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume438Issue:2015Pages:113-123
SubtypeArticle
Abstract

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.

KeywordTree-ring Width Hulun Buir Sandy Land Eastern Mongolian Plateau Relative Humidity Reconstruction Teleconnection
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.palaeo.2015.08.003
WOS KeywordQinghai-tibetan Plateau ; Drought Severity Index ; Inner-mongolia ; North China ; Precipitation Reconstruction ; Surface-temperature ; Climate Variability ; Ad ; Monsoon ; Asia
Indexed BySCI
Language英语
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000362613300009
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9244
Collection现代环境研究室
Corresponding AuthorLiu, Yu
Affiliation1.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
Recommended Citation
GB/T 7714
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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