Analysis of Annular Variability in the Global Circulation

环状模态是观测到的大尺度气候变率模式，对全球大部分地区的天气都有显著影响。它们对天气预报具有潜在的重要意义，并且对最近的气候变化作出了重大贡献。这项研究旨在提高我们对这些重要的变异性模式的理解。这项研究有三个主要的科学目标：1)更好地理解热带外环流的环变率与热带环流耦合的过程；2)更好地理解环模在半球尺度上协调气候变率的过程；3)更好地理解平流层和对流层大气环流变化之间的动力耦合。该计划将采用一系列观测和气候模式来实现这些目标。更广泛的影响。这项研究的教育推广（通过PI的环状模式网站）和社会效益（通过天气和气候预测的进步）预期是非常好的，并且这个项目具有很高的实现潜力。

Annular modes, an observed large-scale pattern of climate variability, have marked impacts on weather throughout large regions of the globe. They have potentially important implications for weather prediction, and they have contributed substantially to recent climate change. This research seeks to improve our understanding of these important patterns of variability. The research is delineated by three principal scientific objectives: 1) to better understand the processes whereby annular variability in the extra tropical circulation is coupled to the circulation of the tropics; 2) to better understand the processes whereby the annular modes orchestrate climate variability on hemispheric scales; and 3) to better understand the dynamic coupling betweenannular variability in the stratosphere and troposphere. The PI will employ a suite of observations and a climate model to address these objectives.Broader Impacts. The educational outreach (through the PI's web site on annular modes) and societal benefits (through advances in weather and climate prediction) expected from this research are very good and of high potential realization for this project.