Bidoup Nui Ba National Park, Vietnam 750 Year PDSI Reconstruction Buckley, B.M.; Anchukaitis, K.J.; Penny, D.; Fletcher, R.R.; Cook, E.R.; Sano, M.; Nam, L.C.; Wichienkeeo, A.; Minh, T.T.; Hong, T.M. Buckley, B.M. Anchukaitis, K.J. Penny, D. Fletcher, R.R. Cook, E.R. Sano, M. Nam, L.C. Wichienkeeo, A. Minh, T.T. Hong, T.M. Monsoon Palmer Drought Index Reconstruction earth science/paleoclimate/climate reconstructions|tree ring (age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Drought Severity Index,null,null,dimensionless,Mar-May,climate reconstructions|tree ring,null,null,N,null) earth science/paleoclimate/reconstructions (Bidoup Nui Ba National Park>LATITUDE 11.9667>LONGITUDE 108.45) The "hydraulic city" of Angkor, the capitol of the Khmer Empire in Cambodia, experienced decades-long drought interspersed with intense monsoons in the fourteenth and fifteenth centuries that, in combination with other factors, contributed to its eventual demise. The climatic evidence comes from a seven-and-a-half century robust hydroclimate reconstruction from tropical southern Vietnamese tree rings. The Angkor droughts were of a duration and severity that would have impacted the sprawling city's water supply and agricultural productivity, while high-magnitude monsoon years damaged its water control infrastructure. Hydroclimate variability for this region is strongly and inversely correlated with tropical Pacific sea surface temperature, indicating that a warm Pacific and El Nino events induce drought at interannual and interdecadal time scales, and that low-frequency variations of tropical Pacific climate can exert significant influence over Southeast Asian climate and society. STUDY NOTES: Early monsoon season (March to May) Palmer Drought Severity Index (PDSI) reconstruction based on tree-ring data from Bidoup Nui Ba National Park, Vietnam for the past 750 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Buckley, B.M. Investigator : Anchukaitis, K.J. Investigator : Penny, D. Investigator : Fletcher, R.R. Investigator : Cook, E.R. Investigator : Sano, M. Investigator : Nam, L.C. Investigator : Wichienkeeo, A. Investigator : Minh, T.T. Investigator : Hong, T.M. 2017-04-13 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/21930 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/asia/vietnam/bidoup-nui-ba2010pdsi.txt https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/asia/vietnam/bidoup-nui-ba2010pdsi.txt English https://www.ncdc.noaa.gov/paleo/study/21930 https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/asia/vietnam/bidoup-nui-ba2010pdsi.txt Brendan M. Buckley, Kevin J. Anchukaitis, Daniel Penny, Roland Fletcher, Edward R. Cook, Masaki Sano, Le Canh Nam, Aroonrut Wichienkeeo, Ton That Minh, and Truong Mai Hong2010Climate as a contributing factor in the demise of Angkor, CambodiaProceedings of the National Academy of Sciences107156748-675210.1073/pnas.0910827107http://www.pnas.org/content/107/15/6748.abstract START YEAR: 1250 AD * END YEAR: 2007 AD 108.45 11.9667 108.45 11.9667