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​Changes In Atmospheric Heating And Holocene South Asian Summer Monsoon

Published on: 14-Mar-2019

Event Type: Seminar
Event Date: 14 March 2019 - 4:00pm to 5:00pm
Venue: ASE Conference Room 1 (N2-01C-061).
Speaker: Dr. Shih-Yu Lee

About the speaker:

Shih-Yu is an assistant research fellow in Research Center of Environmental Changes, Academia Sinica, Taiwan. She has a BSc. degree in Earth Sciences from National Taiwan Normal University and a MSc. degree in Oceanography from National Taiwan University. She received a Ph.D. in Oceanography from University of Michigan, Ann Arbor, and previously worked in UC-Berkeley as a postdoc researcher.


About the event:

Paleoclimate data provide insights to understanding extreme changes in the characteristics of global monsoons. Due to its strength and potential societal impact, Asian monsoon system has a longstanding history of being special interest to research community. The recent development of both observation and modeling techniques is useful to test existing climate thinking.  We will start out by looking at Asian summer precipitation from a simple statistical relationship to identify monsoon regime and then zoom in to South Asian monsoon system. On orbital timescale, an increase in summer insolation is thought to strengthen northern hemisphere summer monsoon over land (Battisti et al., 2014; Wang et al., 2016). We evaluate the relative influence of perihelion precession and high obliquity on Holocene Asian summer monsoon expression from a numerical model aspect. We will present the importance of atmospheric heating changes over the Tibetan Plateau in driving the South Asian monsoon that would have implications in explaining the asynchronous timing existing in paleoclimate records.

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