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Decreasing Asian summer monsoon intensity after 1860 AD in the global warming epoch
Xu, H (Xu, Hai)[1]; Hong, YT (Hong, Yetang)[2]; Hong, B (Hong, Bin)[2]
2012-10-30
Source PublicationCLIMATE DYNAMICS
Volume39Issue:7-8Pages:2079-2088
Subtype期刊论文
Abstract

The trend of the Indian summer monsoon (ISM) intensity and its nature during the past 100 and 200 years still remain unclear. In this study we reconstructed the ISM intensity during the past 270 years from tree ring delta O-18 at Hongyuan, eastern edge of the Tibet Plateau. The monsoon failures inferred from delta O-18(tree ring) correlate well with those recorded in ice cores, speleothem, and historical literature sources. 22.6, 59.0, and 110.9-years frequency components in the Hongyuan delta O-18(tree ring) series, which may be the responses to solar activities, synchronize well with those recorded in other ISM indices. A notable feature of the reconstructed ISM intensity is the gradually decreasing trend from about 1860 to the present, which is inversely related to the increasing temperature trend contemporaneously. Such "decreasing ISM intensity-increasing temperature" tendency can also be supported by ice core records and meteorological records over a wide geographic extension. The decrease in sea surface temperature gradient between tropical and north Indian Ocean, and the decrease in land-sea thermal contrast between tropical Indian Ocean and "Indian sub-continent-western Himalaya" are possibly responsible for the observed decreasing ISM trend.

KeywordHongyuan Tree Ring D18o Indian Summermonsoon
DOI10.1007/s00382-012-1378-0
Indexed BySCI
Language英语
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10126
Collection现代环境研究室
Corresponding AuthorXu, H (Xu, Hai)[1]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment, Chinese Academy of Sciences,Fenghui South Road, #10, High Tech Zone, Xi’an 710075,Shaanxi Province, China;
2.State Key Laboratory of Environmental Geochemistry, Instituteof Geochemistry, Chinese Academy of Sciences, Guiyang, China
Recommended Citation
GB/T 7714
Xu, H ,Hong, YT ,Hong, B . Decreasing Asian summer monsoon intensity after 1860 AD in the global warming epoch[J]. CLIMATE DYNAMICS,2012,39(7-8):2079-2088.
APA Xu, H ,Hong, YT ,&Hong, B .(2012).Decreasing Asian summer monsoon intensity after 1860 AD in the global warming epoch.CLIMATE DYNAMICS,39(7-8),2079-2088.
MLA Xu, H ,et al."Decreasing Asian summer monsoon intensity after 1860 AD in the global warming epoch".CLIMATE DYNAMICS 39.7-8(2012):2079-2088.
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