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Title: Early anthropogenic impacts on the Indian summer monsoon induced by land-use and land-cover changes
Authors: Lin, Ke
Shen, Chuan-Chou
Duan, Wuhui
Tan, Liangcheng
Kong, Xinggong
Lee, Shih-Yu
Chen, Yue-Gau
Wang, Xianfeng
Keywords: Engineering::Environmental engineering
Issue Date: 2022
Source: Lin, K., Shen, C., Duan, W., Tan, L., Kong, X., Lee, S., Chen, Y. & Wang, X. (2022). Early anthropogenic impacts on the Indian summer monsoon induced by land-use and land-cover changes. Journal of Geophysical Research: Atmospheres, 127(18).
Project: MOE2019-T2-1-174 
Journal: Journal of Geophysical Research: Atmospheres 
Abstract: The impacts of anthropogenic forcing on Indian summer monsoon (ISM) rainfall are obscure, partly due to limited availability of highly resolved hydroclimate proxy records as well as the highly regionalized nature of precipitation. Here, we report an annually-resolved speleothem oxygen isotope record from Xianren Cave, southwestern China, which represents rainfall change over the broad ISM region. We find that the region has endured at least six decadal-scale weak monsoon events in the past three hundred years. One of them, lasting from the early to mid 19th century, shares the similar gradual, persistent trend as the most recent decline in ISM rainfall and both have a magnitude substantially larger than the others dominated by natural variability. This early weak monsoon event occurred during a historical time of intensive deforestation in the region. We conclude that the ISM trend could have been altered by the changes in land-use and land-cover since the early 19th century.
ISSN: 2169-897X
DOI: 10.1029/2022JD036754
Schools: Asian School of the Environment 
Research Centres: Earth Observatory of Singapore 
Rights: © 2022. American Geophysical Union.. All rights reserved. This paper was published in Journal of Geophysical Research: Atmospheres and is made available with permission of American Geophysical Union.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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