Progress in studies of the climate of humid period and the impacts of changing precession in early-mid Holocene

Studies on the climate of humid period and the impacts of changing precession in the early-mid Holocene are reviewed in this paper. High-resolution proxy data indicated that the African Humid Period, strong summer monsoon from the Arabian Sea to South Asia, northward migration of ITCZ ( Intertropica...

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Bibliographic Details
Published in:Progress in Natural Science
Main Authors: Huang, Jianbin, Wang, Shaowu, Wen, Xinyu, Yang, Bao
Other Authors: Huang, JB (reprint author), Peking Univ, Sch Phys, Dept Atmospher Sci, Beijing 100871, Peoples R China., Peking Univ, Sch Phys, Dept Atmospher Sci, Beijing 100871, Peoples R China., Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Desert & Desertificat, Lanzhou 730000, Peoples R China.
Format: Journal/Newspaper
Language:English
Published: progress in natural science materials international 2008
Subjects:
Holocene
Humid period
Precession
Summer monsoon
EAST-ASIAN MONSOON
INDIAN MONSOON
AFRICAN MONSOON
MIDHOLOCENE
VEGETATION
CHINA
OCEAN
SIMULATIONS
RECORDS
RECONSTRUCTION
Indian
North Atlantic
Sea ice
Online Access:https://hdl.handle.net/20.500.11897/148939
https://doi.org/10.1016/j.pnsc.2008.05.011
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Summary:Studies on the climate of humid period and the impacts of changing precession in the early-mid Holocene are reviewed in this paper. High-resolution proxy data indicated that the African Humid Period, strong summer monsoon from the Arabian Sea to South Asia, northward migration of ITCZ ( Intertropical Convergence Zone) over the northern South America, and the humid period of China appeared in 10.5-5.5 kaBP, 10.0-6.0 kaBP, 10.5-5.4 kaBP, and 11.0-8.0 kaBP, respectively. Modeling studies proved that summer insolation over the Northern Hemisphere increased following the changes of precession in the early Holocene, which increased the land-sea temperature contrasts, intensified the summer monsoon circulation in the Northern Hemisphere, and finally induced a humid climate over the area under the influence of summer monsoon. However, modeling results underestimated the increase of precipitation and the degree of northward extension of monsoon rain belt compared with palaeo-environmental data. These discrepancies between the modeling results and the palaeo-environmental data may be associated with the changes of North Atlantic circulation, sea ice and vegetation covers. Moreover, climate of the humid period was not stable, in which several droughts were inlaid on centennial scale. In this review, perspectives for further studies of the climate change of the humid period in the early-mid Holocene are also proposed. (c) 2008 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved. Materials Science, Multidisciplinary Multidisciplinary Sciences SCI(E) EI 5 REVIEW 12 1459-1464 18

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