Collaborative Research: Interhemispheric and Zonal Asymmetries of the ITCZ

合作研究:ITCZ 的半球间和区域不对称性

基本信息

  • 批准号:
    2311170
  • 负责人:
  • 金额:
    $ 62.52万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-02-01 至 2025-01-31
  • 项目状态:
    未结题

项目摘要

Satellites views of the earth typically show a narrow band of deep precipitating clouds over the tropical oceans where the trade winds converge. This band, known as the inter-tropical convergence zone, or ITCZ, is generally found north of the equator with a mean latitude of about 6N. Many aspects of the ITCZ including its existence, its role in global atmospheric circulation, and its preference for the Northern Hemisphere can be understood by thinking of the ITCZ as a uniform strip of convection with the same width, central latitude, and rainfall intensity at all longitudes. But this longitudinally averaged view of the ITCZ overlooks substantial variations in ITCZ latitude around the tropics. In particular the ITCZ is found south of the equator in the Indian Ocean and it has a southwest to northeast slope across both the Pacific and Atlantic oceans. The latitude of the ITCZ can thus be anywhere from from 4S to 10N depending on the ocean basin, the longitude within that basin, and the time of year.This project uses combination of observational analysis and carefully designed model simulations to study regional variations in ITCZ latitude and other properties. For instance the northward displacement of the ITCZ in the eastern Pacific has been attributed to the geography of the North and South American coastlines, an idea which can be tested through simulations in which the west coasts of the Americas are mirror images of each other. The importance of oceanic processes is tested using simplified ocean configurations which allow some mechanisms but disable others. Ocean model configurations include a simple motionless "slab" ocean, a modified slab ocean which captures near-surface heat transport driven by surface winds, and a "shallow water" ocean model which allows surface cooling due to the upwelling of cold water from the deep ocean. In addition, the project develops a version of the Community Earth System Model (CESM) in which flux corrections are applied to improve the representation of the ITCZ.The work is of practical interest given the importance of the ITCZ for tropical rainfall as well as its outsized effects on the climate and atmospheric circulation of the earth. Despite its importance the ITCZ is not well simulated in models used for weather prediction and climate change projections, thus a better understanding of ITCZ dynamics could be quite useful for model improvement. The work also has value for the broader research enterprise, as model configurations developed for the project will be openly available for adoption by the worldwide research community. In addition, the award provides support and training for two graduate students, thereby contributing to scientific workforce development.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.
卫星对地球的观察通常会显示热带海洋上空信风汇聚的地方有一条狭窄的深降水云层。这个带被称为热带辐合带,或ITCZ,通常位于赤道以北,平均纬度约为6 N。ITCZ的许多方面,包括它的存在,它在全球大气环流中的作用,以及它对北半球的偏好,可以通过认为ITCZ是在所有经度具有相同宽度、中心纬度和降雨强度的统一的对流条带来理解。但这种对ITCZ的纵向平均看法忽略了热带地区ITCZ纬度的显著变化。特别是,位于印度洋赤道以南的ITCZ,其横跨太平洋和大西洋的坡度为西南向东北。因此,根据大洋盆地、盆地内的经度和一年中的不同时间,ITCZ的纬度可以从4S到10N的任何地方。该项目结合观测分析和精心设计的模式模拟来研究ITCZ纬度和其他特性的区域变化。例如,东太平洋工业贸易区的北移归因于北美和南美海岸线的地理,这一观点可以通过模拟美洲西海岸相互映象来检验。海洋过程的重要性是用简化的海洋结构来测试的,这种结构允许一些机制,但另一些机制是无效的。海洋模型的配置包括一个简单的静止的“板条”海洋,一个改装的板条海洋,它捕捉到由表面风驱动的近地表热量传输,以及一个“浅水”海洋模型,它允许由于深海冷水的上涌而导致表面冷却。此外,该项目还开发了社区地球系统模式(CESM)的一个版本,其中应用了通量校正以改进ITCZ的表示。鉴于ITCZ对热带降雨的重要性及其对地球气候和大气环流的超大影响,这项工作具有实际意义。尽管ITCZ很重要,但在用于天气预报和气候变化预测的模式中没有很好地模拟,因此对ITCZ动力学的更好理解可能对模式改进非常有用。这项工作对更广泛的研究企业也有价值,因为为该项目开发的模型配置将公开供全球研究界采用。此外,该奖项还为两名研究生提供支持和培训,从而为科学劳动力发展做出贡献。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

期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Ocean warming and accelerating Southern Ocean zonal flow
  • DOI:
    10.1038/s41558-021-01212-5
  • 发表时间:
    2021-11
  • 期刊:
  • 影响因子:
    30.7
  • 作者:
    Jia‐Rui Shi;L. Talley;S. Xie;Qihua Peng;Wei Liu
  • 通讯作者:
    Jia‐Rui Shi;L. Talley;S. Xie;Qihua Peng;Wei Liu
Persistent Discrepancies between Observed and Modeled Trends in the Tropical Pacific Ocean
热带太平洋观测到的趋势与模拟的趋势之间持续存在差异
  • DOI:
    10.1175/jcli-d-21-0648.1
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Seager, Richard;Henderson, Naomi;Cane, Mark
  • 通讯作者:
    Cane, Mark
How Does Sea Surface Temperature Drive the Intertropical Convergence Zone in the Southern Indian Ocean?
海面温度如何驱动南印度洋热带辐合带?
  • DOI:
    10.1175/jcli-d-21-0870.1
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Zhang, Honghai;Seager, Richard;Xie, Shang-Ping
  • 通讯作者:
    Xie, Shang-Ping
Zonal mean and shift modes of historical climate response to evolving aerosol distribution
  • DOI:
    10.1016/j.scib.2021.07.013
  • 发表时间:
    2021-11-05
  • 期刊:
  • 影响因子:
    18.9
  • 作者:
    Kang, Sarah M.;Xie, Shang-Ping;Xiang, Baoqiang
  • 通讯作者:
    Xiang, Baoqiang
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Honghai Zhang其他文献

Neural network and principal component analyses of highly variable myocardial mechanical waveforms derived from echocardiographic ultrasound images
来自超声心动图超声图像的高度可变心肌机械波形的神经网络和主成分分析
The Meridional Mode: Dependence on the Mean Climate State
经向模式:对平均气候状态的依赖
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Honghai Zhang
  • 通讯作者:
    Honghai Zhang
Computed Tomography Perfusion–Based Prediction of Core Infarct and Tissue at Risk: Can Artificial Intelligence Help Reduce Radiation Exposure?
基于计算机断层扫描灌注的核心梗塞和危险组织预测:人工智能能否帮助减少辐射暴露?
  • DOI:
    10.1161/strokeaha.121.034266
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    8.3
  • 作者:
    G. Bathla;Yanan Liu;Honghai Zhang;M. Sonka;C. Derdeyn
  • 通讯作者:
    C. Derdeyn
The Role of SIRT1 in Neuropathic Pain from the Viewpoint of Neuroimmunity
  • DOI:
    10.2174/1381612827666210705162610
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
  • 作者:
    Youjia Fan;Rong Dong;Honghai Zhang;Buwei Yu;Han Lu
  • 通讯作者:
    Han Lu
Compensation method based on formularizing hysteresis of piezoelectric tube scanners
基于公式化压电管扫描仪磁滞的补偿方法
  • DOI:
  • 发表时间:
    1996
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Cao Wei;Honghai Zhang;L. Tao;Wenju Li;Hanmin Shi
  • 通讯作者:
    Hanmin Shi

Honghai Zhang的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Honghai Zhang', 18)}}的其他基金

Collaborative Research: Interhemispheric and Zonal Asymmetries of the ITCZ
合作研究:ITCZ 的半球间和区域不对称性
  • 批准号:
    1934363
  • 财政年份:
    2020
  • 资助金额:
    $ 62.52万
  • 项目类别:
    Standard Grant

相似国自然基金

Research on Quantum Field Theory without a Lagrangian Description
  • 批准号:
    24ZR1403900
  • 批准年份:
    2024
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
Cell Research
  • 批准号:
    31224802
  • 批准年份:
    2012
  • 资助金额:
    24.0 万元
  • 项目类别:
    专项基金项目
Cell Research
  • 批准号:
    31024804
  • 批准年份:
    2010
  • 资助金额:
    24.0 万元
  • 项目类别:
    专项基金项目
Cell Research (细胞研究)
  • 批准号:
    30824808
  • 批准年份:
    2008
  • 资助金额:
    24.0 万元
  • 项目类别:
    专项基金项目
Research on the Rapid Growth Mechanism of KDP Crystal
  • 批准号:
    10774081
  • 批准年份:
    2007
  • 资助金额:
    45.0 万元
  • 项目类别:
    面上项目

相似海外基金

Collaborative Research: Interhemispheric and Zonal Asymmetries of the ITCZ
合作研究:ITCZ 的半球间和区域不对称性
  • 批准号:
    1934363
  • 财政年份:
    2020
  • 资助金额:
    $ 62.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Interhemispheric and Zonal Asymmetries of the ITCZ
合作研究:ITCZ 的半球间和区域不对称性
  • 批准号:
    1934392
  • 财政年份:
    2020
  • 资助金额:
    $ 62.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Interhemispheric linkages of Late Pleistocene climate change in the circum-Pacific region
合作研究:环太平洋地区晚更新世气候变化的半球间联系
  • 批准号:
    1024657
  • 财政年份:
    2010
  • 资助金额:
    $ 62.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Interhemispheric linkages of Late Pleistocene climate change in the circum-Pacific region
合作研究:环太平洋地区晚更新世气候变化的半球间联系
  • 批准号:
    1024850
  • 财政年份:
    2010
  • 资助金额:
    $ 62.52万
  • 项目类别:
    Standard Grant
Interhemispheric Research/Training in Infectious Disease
传染病的半球研究/培训
  • 批准号:
    6926206
  • 财政年份:
    2004
  • 资助金额:
    $ 62.52万
  • 项目类别:
Interhemispheric Research/Training in infectious Disease
传染病的半球研究/培训
  • 批准号:
    8122211
  • 财政年份:
    2004
  • 资助金额:
    $ 62.52万
  • 项目类别:
Interhemispheric Research/Training in Infectious Disease
传染病的半球研究/培训
  • 批准号:
    7037485
  • 财政年份:
    2004
  • 资助金额:
    $ 62.52万
  • 项目类别:
Interhemispheric Research/Training in infectious Disease
传染病的半球研究/培训
  • 批准号:
    8292052
  • 财政年份:
    2004
  • 资助金额:
    $ 62.52万
  • 项目类别:
Interhemispheric Research/Training in Infectious Disease
传染病的半球研究/培训
  • 批准号:
    7218043
  • 财政年份:
    2004
  • 资助金额:
    $ 62.52万
  • 项目类别:
Interhemispheric Research/Training in infectious Disease
传染病的半球研究/培训
  • 批准号:
    7895720
  • 财政年份:
    2004
  • 资助金额:
    $ 62.52万
  • 项目类别:
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了