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【学术报告】Subtropical East Asia Hydroclimatic Changes: History, Laws, and Mechanisms

2019-09-02 1493

 

Subtropical east Asia is one of the world’s most populated regions, thus understanding the response of precipitation to changes in climate forcing is crucial for predicting future water availability. Changes in precipitation over Asia monsoon areas have been generally assumed to be controlled by changes in boreal summer solar insolation. However, in recent years, increasing lines of evidence question the notion of a uniformly direct response of Asia monsoon precipitation to changes in boreal summer solar insolation. Over subtropical East Asia, different atmospheric circulations prevail, including Indian summer monsoon, East Asia summer monsoon, ITCZ, and western Pacific subtropical high. These complicate the ability to understand how and why hydroclimate changes in this region? What are the driving forcings behind the changes? How will water availability change in a global warming scenario? These are frontier questions both in climatology and paleo- climatology. This seminar will focus on these scientific issues, with presentations and discussions covering historical hydroclimatic records, climatic simulations, geochemical methods and techniques, etc.

 

地点: 天津大学地科院(卫津路校区第16教学楼)221报告厅

时间: 2019年9月9日 (周一)

9:00-9:40   Prof. Yehouda Enzel, How blue was the green Sahara? A critical view of the Saharan lakes and megalakes and the Holocene latitudinal change in precipitation over North Africa.

9:40-10:30  Prof. Liangcheng Tan, Rainfall variations in central Indo-Pacific over the past 2,700 years.

Tea break

10:50-11:30 Prof. Jingjia Luo, Common model biases reduce CMIP5's ability to simulate the recent Pacific La Ni?a-like cooling.

Lunch Time/Rest

14:00-14:40 Prof. Hai Xu, Overlapping Western Pacific Subtropical High on Asian Summer Monsoon Shapes Subtropical East Asia precipitation.

14:40-15:20 Dr. Yonatan Goldsmith, At the monsoons fringe, a quantitative rainfall reconstruction of North China based on lake area records.

Tea break

15:20-16:00 Prof. Yi Liu, Growth rates of South China Sea corals over the past 550 years and their response to climate change.

16:00-16:40 Dr. Sang Chen, Borneo Speleothem Record of Long-term Western Pacific Warm Pool Hydroclimate Evolution.