Collaborative Research: Illuminating the characteristics, causes, and paleoclimatic importance of the Mid-Cenozoic Loess in the Western USA

合作研究:阐明美国西部中新生代黄土的特征、成因和古气候重要性

基本信息

  • 批准号:
    2114204
  • 负责人:
  • 金额:
    $ 26.08万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2021
  • 资助国家:
    美国
  • 起止时间:
    2021-09-15 至 2024-08-31
  • 项目状态:
    已结题

项目摘要

Loess deposits consist of fine-grained, windblown sediments and contain critical information about continental aridification processes that are key to understanding biotic evolution and climate change. This project integrates field data collected from loess deposited ~37-30 million years ago in Wyoming, Nebraska and Montana, laboratory analyses, and paleoclimate simulations to understand the nature, causes, and paleoclimatic importance of these loess deposits. The research will advance STEM diversity by supporting a two-day GEOCAMP for historically underrepresented high-school students from east Texas. In addition, this project will promote further development of the high-resolution Community Earth System Model to be used to better understand ancient climate changes. This project will include field sedimentological observation and lab analyses of bulk sediment and quartz grain-size, quartz surface morphology, detrital and high-precision zircon U-Pb geochronology to study the ancient loess deposits in Wyoming, Nebraska and Montana, USA. These proxy data will constrain the extent, timing, pattern and characteristics of the loess; and determine sediment provenance and sediment recycling mechanisms. These proxy data will be integrated with a coupled atmosphere-land model to simulate changes of regional climate and vegetation induced by topography changes, global climate cooling, glaciation and shoreline regression to understand the cause and climate significance of the loess. In additional to gaining fundamental understanding of the loess deposits, the project will shed light on 1) the influence of climate change on biotic evolution at the Eocene-Oligocene transition (~34 million years ago); 2) the validity of different models of surface uplift in the western USA; and 3) the potential positive climate feedback of enhanced mineral dust emissions on global cooling at the transition.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
黄土沉积物由细粒的风吹沉积物组成,包含了大陆干旱化过程的关键信息,这些信息是了解生物进化和气候变化的关键。该项目整合了从怀俄明州、内布拉斯加州和蒙大拿州约3700 - 3000万年前沉积的黄土中收集的野外数据、实验室分析和古气候模拟,以了解这些黄土沉积物的性质、原因和古气候重要性。该研究将通过支持为期两天的GEOCAMP来促进STEM多样性,该GEOCAMP针对来自德克萨斯州东部的历史上代表性不足的高中生。此外,该项目还将促进进一步开发高分辨率社区地球系统模型,用于更好地了解古代气候变化。该项目将包括野外沉积学观察和实验室分析的散装沉积物和石英粒度,石英表面形态,碎屑和高精度锆石U-Pb年代学研究的古黄土沉积在怀俄明州,内布拉斯加州和蒙大拿州,美国。这些代用数据将制约黄土的范围、时间、模式和特征,并确定沉积物的物源和沉积物再循环机制。这些代用数据将与一个耦合的大气-陆地模式相结合,以模拟地形变化、全球气候变冷、冰川作用和海岸线后退引起的区域气候和植被变化,以了解黄土的成因和气候意义。除了获得对黄土沉积的基本了解外,该项目还将阐明1)气候变化对始新世-渐新世过渡期生物进化的影响(~ 3400万年前); 2)美国西部不同地表隆起模型的有效性;和3)增强矿物粉尘排放对转型期全球变冷的潜在积极气候反馈。该奖项反映了NSF的法定使命,通过使用基金会的知识价值和更广泛的影响审查标准进行评估,认为值得支持。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Global and Zonal‐Mean Hydrological Response to Early Eocene Warmth
  • DOI:
    10.1029/2022pa004542
  • 发表时间:
    2023-06
  • 期刊:
  • 影响因子:
    3.5
  • 作者:
    M. Cramwinckel;N. Burls;A. A. Fahad-A.;Scott Knapp;C. K. West;T. Reichgelt;D. Greenwood;W. Chan;Y. Donnadieu;D. Hutchinson;A. D. de Boer;J. Ladant;P. Morozova;I. Niezgodzki;G. Knorr;S. Steinig;Zhongshi Zhang;Jiang Zhu;R. Feng;D. Lunt;A. Abe‐Ouchi;G. Inglis
  • 通讯作者:
    M. Cramwinckel;N. Burls;A. A. Fahad-A.;Scott Knapp;C. K. West;T. Reichgelt;D. Greenwood;W. Chan;Y. Donnadieu;D. Hutchinson;A. D. de Boer;J. Ladant;P. Morozova;I. Niezgodzki;G. Knorr;S. Steinig;Zhongshi Zhang;Jiang Zhu;R. Feng;D. Lunt;A. Abe‐Ouchi;G. Inglis
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Ran Feng其他文献

Contributions of aerosol‐cloud interactions to mid‐Piacenzian seasonally sea ice‐free Arctic Ocean
气溶胶-云相互作用对中皮亚琴兹季节性海冰无冰北冰洋的贡献
  • DOI:
    10.1029/2019gl083960
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Ran Feng;B. L. Otto;Yangyang Xu;E. Brady;Tamara Fletcher;Ashley P Ballantyne
  • 通讯作者:
    Ashley P Ballantyne
Experimental determination of giant polarization in wurtzite III-nitride semiconductors
纤锌矿结构Ⅲ族氮化物半导体中巨极化的实验测定
  • DOI:
    10.1038/s41467-025-58975-0
  • 发表时间:
    2025-04-24
  • 期刊:
  • 影响因子:
    15.700
  • 作者:
    Haotian Ye;Ping Wang;Rui Wang;Jinlin Wang;Xifan Xu;Ran Feng;Tao Wang;Wen-Yi Tong;Fang Liu;Bowen Sheng;Wenjie Ma;Bingxuan An;Hongjian Li;Zhaoying Chen;Chun-Gang Duan;Weikun Ge;Bo Shen;Xinqiang Wang
  • 通讯作者:
    Xinqiang Wang
Interfacial behaviour and shear performance of polarized CFRCM-strengthened corroded RC continuous beams
极化碳纤维增强复合材料加固锈蚀钢筋混凝土连续梁的界面行为和剪切性能
  • DOI:
    10.1016/j.conbuildmat.2025.140786
  • 发表时间:
    2025-04-18
  • 期刊:
  • 影响因子:
    8.000
  • 作者:
    Panpan Liu;Jing-Pu Tang;Ran Feng;Youhua Fan;Ji-Hua Zhu
  • 通讯作者:
    Ji-Hua Zhu
Benchmark for the scheduling problems of airport ground support operations and a case study
机场地面保障作业调度问题的基准及案例研究
  • DOI:
    10.1016/j.asoc.2024.112555
  • 发表时间:
    2025-01-01
  • 期刊:
  • 影响因子:
    6.600
  • 作者:
    Zhihao Cai;Wanru Gao;Ran Feng;Yafei Li;Mingliang Xu
  • 通讯作者:
    Mingliang Xu
Asymmetric Pacific variability in the Pliocene: An unchanged PDO relative to a suppressed ENSO
上新世太平洋不对称变率:与受抑制的厄尔尼诺现象相比,太平洋年代际涛动(PDO)未发生变化
  • DOI:
    10.1016/j.gloplacha.2025.104932
  • 发表时间:
    2025-10-01
  • 期刊:
  • 影响因子:
    4.000
  • 作者:
    Katya V. Canal-Solis;Julia C. Tindall;Arthur M. Oldeman;Alan M. Haywood;Ayako Abe-Ouchi;Michiel L.J. Baatsen;Wing-Le Chan;Ran Feng;Stephen J. Hunter;Xiangyu Li;Christian Stepanek;Zhongshi Zhang
  • 通讯作者:
    Zhongshi Zhang

Ran Feng的其他文献

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{{ truncateString('Ran Feng', 18)}}的其他基金

CAREER: The State Dependency of Climate Sensitivity during Cenozoic Warm Intervals
职业生涯:新生代温暖时期气候敏感性的状态依赖性
  • 批准号:
    2238875
  • 财政年份:
    2023
  • 资助金额:
    $ 26.08万
  • 项目类别:
    Continuing Grant
Collaborative Research: Reducing Model Uncertainty by Improving Understanding of Pacific Meridional Climate Structure during Past Warm Intervals
合作研究:通过提高对过去温暖时期太平洋经向气候结构的理解来降低模型不确定性
  • 批准号:
    2303566
  • 财政年份:
    2023
  • 资助金额:
    $ 26.08万
  • 项目类别:
    Continuing Grant
Collaborative Research: Sensitivity of Walker circulation to CO2 forcing during the late Pliocene as an analogue for future climate change
合作研究:上新世晚期沃克环流对二氧化碳强迫的敏感性作为未来气候变化的类比
  • 批准号:
    2103055
  • 财政年份:
    2021
  • 资助金额:
    $ 26.08万
  • 项目类别:
    Standard Grant
Collaborative Research: Paleoclimate perspective on the response of Southwest North American rainfall to elevated greenhouse gases
合作研究:北美西南部降雨对温室气体升高的响应的古气候视角
  • 批准号:
    1903650
  • 财政年份:
    2019
  • 资助金额:
    $ 26.08万
  • 项目类别:
    Standard Grant
Collaborative Research: Integrating tectonics, climate, and mammal diversity
合作研究:整合构造、气候和哺乳动物多样性
  • 批准号:
    1814029
  • 财政年份:
    2018
  • 资助金额:
    $ 26.08万
  • 项目类别:
    Standard Grant

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