Collaborative Research: P2C2--Cave Climate Histories of East/Central Asia: Deeper in Time, Wider Geographically, New Analytical Approaches, and New Tests of Climate Interpretations

该项目建立在研究人员先前的研究基础上，该研究拼凑了一个64万年长的高分辨率记录，记录了目前受亚洲季风降雨影响的中国地区洞穴方解石的氧同位素组成。 研究人员的目标是通过一系列测试来研究洞穴方解石的氧同位素组成与气候的关系。 这些分析测试包括（1）从亚洲不同地区获得记录，（2）在特定的气候转变中获得氧同位素组成的极高分辨率季节记录，以及（3）测量选定洞穴沉积物中的氧-17异常。洞穴方解石的氧同位素组成对气候的响应机制的拟议测试旨在帮助阐明导致亚洲季风变化的基本过程。 这项研究很重要，因为亚洲季风影响着数百万人，并对轨道时间尺度上的区域日照变化和千年时间尺度上的北大西洋气候做出反应。该项目将允许研究人员使用季风记录作为高纬度气候的窗口。 更广泛的影响包括支持早期职业科学家，博士后学者，研究生，并促进互利的国际合作。

The project builds upon the researchers' previous research piecing together a 640,000-year long, high-resolution record of the oxygen isotopic composition of cave calcite from the region of China currently affected by Asian monsoon rainfall. The researchers aim to examine how the oxygen isotopic composition of cave calcite relates to climate using a series of tests. These analytical tests involve (1) obtaining records from different regions of Asia, (2) obtaining extremely high resolution seasonal records of oxygen isotopic composition over specific transitions in climate, and (3) measuring the Oxygen-17 anomalies in selected cave deposits. The proposed tests of the mechanisms whereby the oxygen isotopic composition of cave calcite responds to climate aim to help illuminate the fundamental processes that cause changes in the Asian Monsoon. This research is important because the Asian Monsoon affects millions of people and responds to regional insolation changes at orbital timescales and North Atlantic climate at millennial timescales. The project will allow the researchers to use the monsoon records as a window into high latitude climate. The broader impacts involve supporting an early career scientist, a postdoctoral scholar, a graduate student, and fostering mutually beneficial international collaborations.