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

基本信息

  • 批准号:
    2303566
  • 负责人:
  • 金额:
    $ 30.46万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-12-15 至 2026-11-30
  • 项目状态:
    未结题

项目摘要

The general science goal of the research is to advance understanding of feedback from cloud and moist convection to carbon dioxide radiative forcing, which is one of the most fundamental questions in modern climate science. This project specifically seeks to advance several key aspects of climate modeling and future climate projections by identifying model parameters that can reproduce both past and present-day sea surface temperature gradients and north-south precipitation delta-deuterium gradients. The rational for the research strategy is founded on the notion that the reduction in the tropical to mid-latitude sea surface temperature gradient, as shown by proxy records across Pacific and Atlantic Ocean basins, is a common feature of past warm intervals but remains difficult for climate models to replicate. This model-data discrepancy (termed “the low-gradient problem”) is closely tied to the parameterizations of cloud, moist convection, and ocean mixing, which remain highly uncertain and limit the confidence of predicted future climate change by models. Narrowing down this uncertainty can benefit from data from past climates and targeted paleoclimate simulations.The potential Broader Impacts of this project include supporting early career scientists, post-doctoral scholar, graduate student, and undergraduate support and mentoring, and workshops for high school students.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.
这项研究的总体科学目标是促进对云和湿对流对二氧化碳辐射强迫的反馈的理解,这是现代气候科学中最基本的问题之一。该项目特别力求通过确定能够再现过去和现在的海表面温度梯度以及南北降水的三角洲--氚梯度的模型参数,推动气候建模和未来气候预测的几个关键方面。这一研究战略的合理性是基于这样一个概念,即太平洋和大西洋盆地的替代记录表明,热带到中纬度海表面温度梯度的降低是过去温暖时段的共同特征,但气候模型仍然难以复制。这种模型-数据差异(称为“低梯度问题”)与云、湿对流和海洋混合的参数化密切相关,这些参数仍然高度不确定,限制了模型预测未来气候变化的可信度。缩小这种不确定性可以受益于来自过去气候的数据和有针对性的古气候模拟。该项目潜在的更广泛的影响包括支持早期职业科学家、博士后学者、研究生和本科生的支持和指导,以及为高中生举办的研讨会。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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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:
    $ 30.46万
  • 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:
    $ 30.46万
  • 项目类别:
    Standard Grant
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
  • 批准号:
    2114204
  • 财政年份:
    2021
  • 资助金额:
    $ 30.46万
  • 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:
    $ 30.46万
  • 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:
    $ 30.46万
  • 项目类别:
    Standard Grant

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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:
    2303568
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    2023
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