Atmospheric heating and Holocene Asian summer monsoon response to insolation
Abstract
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 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.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMPP43B1588L
- Keywords:
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- 1620 Climate dynamics;
- GLOBAL CHANGE;
- 1627 Coupled models of the climate system;
- GLOBAL CHANGE;
- 4901 Abrupt/rapid climate change;
- PALEOCEANOGRAPHY;
- 4910 Astronomical forcing;
- PALEOCEANOGRAPHY