Collaborative Research: P2C2--Reconstructing Changes in Asian Monsoon Circulation during the Last Millennium from Stable Isotopes in Tropical Tree Rings

该项目旨在对亚洲季风大气环流的强度进行长达千年的估计，并从越南和老挝长寿的东南亚针叶树福建柏的重复、年度分辨的稳定氧同位素（δ 18-O）时间序列中推断过去季风环流的变化。 这项研究利用了以前支持的一项试点研究，该研究表明，该地区该物种的树木年轮对亚洲季风环流的大规模模式做出了反应，这些模式与气候动力学一致，已知控制降水的稳定同位素，以及包括同位素树木气候学研究的物理和化学机制。潜在的更广泛的影响包括支持大学生参与计划中的研究并提供来自气候敏感区域的潜在重要的新数据档案。

This project seeks to develop millennium-length estimates of the strength of Asian monsoon atmospheric circulation and to infer variability in past monsoon circulation from replicated, annually-resolved stable oxygen isotope (ä18-O) time series from the long-lived southeast Asian conifer Fokienia hodginsii in Vietnam and Laos. The research leverages a previously supported pilot study that demonstrated that tree-ring ä18-O from this species in this region responds to broad-scale patterns of Asian monsoon circulation that are consistent with climate dynamics, known controls on the stable isotopes of precipitation, and the physical and chemical mechanisms comprising the study of isotope dendroclimatology.The potential broader impacts include supporting undergraduates in the planned research and providing a potentially important new archive of data from a climatologically sensitive region.