Structure, Amplification and Nonlinearity of the 2-Day Wave

两天波的结构、放大和非线性

• 批准号: 0120512
• 负责人: Murry Salby
• 金额: --
• 依托单位: Atmospheric Systems and Analysis
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0120512&HistoricalAwards=false
• 关键词: Structure; Amplification; Nonlinearity; Day; Wave

Numerical integrations will be performed to study the 2-day wave in a generally-unstable mean flow. Modal period and structure and its amplification will be calculated in the presence of zonal-mean structure representative of observations. Those calculated features will then be compared with observed space-time behavior of the 2-day wave. Finite amplitude considerations, leading to transport and to interaction with other planetary waves, will be addressed in fully-nonlinear integrations. Together with observed behavior, those integrations will be used to evaluate the impact that 2-day wave nonlinearity has on dynamical and chemical structure. The research outlined here promises a unified understanding of the 2-day wave and its role in the general circulation of the middle and upper atmosphere.

数值积分将用于研究一般不稳定平均流中的2天波。模态周期和结构及其放大将在具有观测值代表性的纬向平均结构存在的情况下计算。这些计算出的特征将与观测到的2天波的时空行为进行比较。有限振幅的考虑，导致输运和与其他行星波的相互作用，将在完全非线性积分中解决。结合观察到的行为，这些积分将用于评估2天波非线性对动力学和化学结构的影响。这里概述的研究保证了对2日波及其在中高层大气环流中的作用的统一认识。