Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8914645 | Quaternary Science Reviews | 2018 | 11 Pages |
Abstract
The result reveals an overall decreasing precipitation trend, with two most notable wet periods occurred in 60-280 AD and 370-510 AD. The most remarkably dry period is the recent 200 years. Some decadal scale wet and dry intervals were also identified. The abnormal drought during 1160-1245 AD might have accelerated Dali kingdom's demise at 1253 AD. Power spectrum analysis indicated significant 373-, 187-, 22-, 12- and 11- yr cycles in our stalagmite record, suggesting the impact of solar activity. Increased monsoon precipitation on southeastern TP was observed in solar activity minima during the last millennium. We further synthesized an integrated precipitation record for southwestern China and discussed spatial patterns of precipitation over China during the last two millennia. The comparisons confirm a "dry southern and wet northern" pattern in monsoonal China during the Medieval Warm Period and a "wet southern and dry northern" pattern during the Little Ice Age and Dark Age Cold Period. Solar activity, the strength of westerly jet and summer monsoon, as well as the SST of tropical Indo-Pacific might play important roles on the rainfall spatial patterns over monsoonal China during the last 2000 years.
Related Topics
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Earth and Planetary Sciences
Geology
Authors
Liangcheng Tan, Yanjun Cai, Hai Cheng, Lawrence R. Edwards, Jianghu Lan, Haiwei Zhang, Dong Li, Le Ma, Peipei Zhao, Yongli Gao,