On the Dynamics and Implications of the Relationship Between the Subtropical and Polar-Front Jet

副热带与极锋急流关系的动力学及其意义

• 批准号: 0324908
• 负责人: Sukyoung Lee
• 金额: $ 31.97万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0324908&HistoricalAwards=false
• 关键词: Dynamics; Implications; Relationship; Between; Subtropical

This project seeks to better understand the structure, persistence and variability of the tropospheric polar front and subtropical jet streams, investigating their separate driving mechanisms using time-averaged data. A hypothesis is put forward to describe the dynamical relationship between these jet streams and their influence on the structure of storm tracks and the formation of low-frequency anomalies in atmospheric flow. A series of modeling studies will be undertaken for both dry and moist atmospheric conditions, and the results used to formulate an analytical (or semi-analytical) theory for predicting jet regimes.This project is expected to benefit the scientific community by improving its understanding of the different mechanisms driving atmospheric jet streams, enabling the prediction of their influence on large-scale climate variability. The project will also involve student participation, including attendance at professional meetings, and dissemination of its results in classroom teaching.

该项目旨在更好地了解对流层极锋和副热带急流的结构、持续性和变化性，利用时间平均数据调查它们各自的驱动机制。 提出了一个假设来描述这些急流之间的动力学关系及其对风暴轴结构和大气流动低频异常形成的影响。 将对干燥和潮湿的大气条件进行一系列模拟研究，并将研究结果用于制定预测喷流状况的分析（或半分析）理论，预计该项目将使科学界更好地了解驱动大气喷流的不同机制，从而能够预测其对大规模气候变异的影响，从而使科学界受益。 该项目还将涉及学生的参与，包括出席专业会议，并在课堂教学中传播其结果。