Monsoon extremes and society over the past millennium on mainland Southeast Asia
- Monsoon extremes and society over the past millennium on mainland Southeast Asia
- Buckley, Brendan M.
Wang, Shi-Yu Simon
- Lamont-Doherty Earth Observatory
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- Quaternary Science Reviews
- The early 21st century has seen vigorous scientific interest in the Asian monsoon and significant development of paleo-proxies of monsoon strength. These include the Monsoon Asian Drought Atlas – a 700-year, gridded reconstruction of hydroclimate derived from 327 tree ring records – and several long speleothem records from China and India. Similar progress has been made on the study of monsoon climate dynamics through re-analysis data products and General Circulation Model diagnostics. The story has emerged of a variable monsoon over the latter Holocene, with extended droughts and anomalously wet episodes that occasionally and profoundly influenced the course of human history. We focus on Southeast Asia where an anomalous period of unstable climate coincided with the demise of the capital of the Khmer Empire at Angkor between the 14th and the 16th centuries, and we suggest that protracted periods of drought and deluge rain events, the latter of which damaged Angkor's extensive water management systems, may have been a significant factor in the subsequent transfer of the political capital away from Angkor. The late 16th and early 17th century experienced climate instability and the collapse of the Ming Dynasty in China under a period of drought, while Tonkin experienced floods and droughts throughout the 17th century. The 18th century was a period of great turmoil across Southeast Asia, when all of the region's polities saw great unrest and rapid realignment during one of the most extended periods of drought of the past millennium. New paleo-proxy records and the incorporation of historical documentation will improve future analyses of the interaction between climate extremes, social behavior and the collapse or disruption of regional societies, a subject of increasing concern given the uncertainties surrounding projections for future climate.
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- Brendan M. Buckley, Roland Fletcher, Shi-Yu Simon Wang, Brian Zottoli, Christophe Pottier, 2014, Monsoon extremes and society over the past millennium on mainland Southeast Asia, Columbia University Academic Commons, https://doi.org/10.7916/D8N58JGK.