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

合作研究：P2C2--东亚/中亚洞穴气候历史：更深入的时间、更广泛的地理、新的分析方法和气候解释的新测试

• 批准号: 1702816
• 负责人: Richard Edwards
• 金额: $ 40.25万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1702816&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Cave; Climate

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.

该项目建立在研究人员之前的研究基础上，将目前来自亚洲季风降雨影响的中国地区的洞穴方解石的氧同位素组成的高分辨率同位素组成汇总在一起。 研究人员的目的是研究洞穴方解石的氧同位素组成如何使用一系列测试与气候相关。 这些分析测试涉及（1）从亚洲不同地区获得记录，（2）在气候下的特定过渡中获得极高的分辨率氧同位素组成的季节性记录，以及（3）测量所选洞穴沉积中的氧气17异常。提出的对洞穴的氧同位素组成的机制的测试对气候的目的做出了响应，以帮助阐明导致亚洲季风变化的基本过程。 这项研究很重要，因为亚洲季风会影响数百万的人，并对千禧年时标的轨道时代标准和北大西洋气候的区域日光度变化做出反应。该项目将使研究人员可以将季风记录用作进入高纬度气候的窗口。 更广泛的影响涉及支持早期职业科学家，博士后学者，研究生，并培养互惠互利的国际合作。

项目成果

Summer Monsoon Rainfall Variability in Central China over the Past 4700 Years and Its Possible Link to Solar Activity

• DOI: 10.1007/s13351-021-0168-1
• 发表时间: 2021-08
• 期刊: Journal of Meteorological Research
• 影响因子: 3.2
• 作者: Jingwei Zhang;Kan Zhao;X. Kong;Yongjin Wang;Xianfang Wang;Shushuang Liu;Zhenjun Wang;Hai Cheng-H

A new speleothem record of the penultimate deglacial: Insights into spatial variability and centennial-scale instabilities of East Asian monsoon

• DOI: 10.1016/j.quascirev.2019.02.023
• 发表时间: 2019-04
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: G. Xue;Yanjun Cai;Le Ma;Xing Cheng;Hai Cheng;R. Edwards;Dong Li;L. Tan

Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years

过去 5000 年撒哈拉沙尘通量、季风强度和北大西洋气候之间的密切联系

• DOI: 10.1126/sciadv.abe6102
• 发表时间: 2021
• 期刊: Science Advances
• 影响因子: 13.6
• 作者: Cruz, Juncal A.;McDermott, Frank;Turrero, María J.;Edwards, R. Lawrence;Martín-Chivelet, Javier
• 通讯作者: Martín-Chivelet, Javier

Holocene Monsoon Change and Abrupt Events on the Western Chinese Loess Plateau as Revealed by Accurately Dated Stalagmites

• DOI: 10.1029/2020gl090273
• 发表时间: 2020-11
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: L. Tan;Yanzhen Li;Xiqian Wang;Yanjun Cai;F. Lin;Hai Cheng;Le Ma;A. Sinha;R. Edwards

Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse

• DOI: 10.1038/s41561-021-00851-9
• 发表时间: 2021-11
• 期刊: Nature Geoscience
• 影响因子: 18.3
• 作者: J. Wassenburg;H. Vonhof;Hai Cheng;A. Martínez-García;Pia-Rebecca Ebner;Xianglei Li;Haiwei Zhang;Lijuan Sha;Ye Tian;R. Edwards;J. Fiebig;G. Haug