Collaborative Research: Tropical Marine Climate Feedback to Mid- and High-Latitude Climate Change

合作研究：热带海洋气候对中高纬度气候变化的反馈

• 批准号: 0437386
• 负责人: Ping Chang
• 金额: --
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0437386&HistoricalAwards=false
• 关键词: Collaborative; Research; Tropical; Marine; Climate

This project will further research into the potential extratropical controls of the marine Intertropical Convergence Zone and consequences to the tropical marine climate and global climate. The working hypothesis is that the marine tropics are sensitive to extratropical influences, in particular through mechanisms similar to those controlling interannual variability of the Atlantic Intertropical Convergence Zone. Four specific questions are identified: What are the mechanisms of the extratropical communication to the tropics from changes to extratropical ice and topography? What are the tropical thermodynamic and dynamic ocean-atmosphere feedbacks to this linkage (e.g., the tropical Pacific annual cycle and El Nino-Southern Oscillation)? What are the resulting global climate impacts to the tropical feedback? What are the potential applications of this study to past and future climate change scenarios? These investigations will primarily be pursued as model studies using the Community Climate Model, version 3, coupled to various simplified surface ocean configurations, including a reduced-gravity tropical ocean model.This is a collaborative effort between research groups at the University of California, Berkeley and Texas A&M. Two graduate students and a postdoctoral associate will receive support, and the project will provide opportunities for undergraduate research. Advances in the understanding of abrupt climate change are anticipated from this work.

该项目将进一步研究热带海洋辐合带的潜在温带控制以及对热带海洋气候和全球气候的影响。工作假设是，海洋热带对温带影响很敏感，特别是通过类似于控制大西洋热带辐合带年际变化的机制。确定了四个具体问题：从温带冰层和地形的变化到热带的温带交通的机制是什么？热带海洋-大气对这种联系的热力和动力反馈是什么(例如，热带太平洋年度循环和厄尔尼诺-南方涛动)？由此产生的全球气候对热带反馈的影响是什么？这项研究对过去和未来气候变化情景的潜在应用是什么？这些调查将主要作为使用社区气候模式第三版的模式研究，结合各种简化的表层海洋配置，包括一个减轻重力的热带海洋模式。这是加州大学伯克利分校和德克萨斯A&Amp；M的研究小组合作的努力。两名研究生和一名博士后助理将得到支持，该项目将为本科生研究提供机会。这项工作有望在理解气候突变方面取得进展。