Dynamical Meteorology of the Equatorial Middle Atmosphere

赤道中层大气动力气象学

• 批准号: 8819582
• 负责人: Timothy Dunkerton
• 金额: $ 15.64万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-05-01 至 1992-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8819582&HistoricalAwards=false
• 关键词: Dynamical; Meteorology; Equatorial; Middle; Atmosphere

The variability of the mean flow of the equatorial middle atmosphere (15 to 90 km altitude) is dominated by the quasi- biennial and semi-annual oscillations (the QBO and SAO, respectively). The oscillations are manifested as a westerly phase of the equatorial zonal winds and represent a condition of superrotation in terms of angular momentum. The purpose of this research is to explore, from a theoretical viewpoint, the dynamics of these oscillations. The QBO is a stratospheric phenomenon, occurring irregularly every 22 to 34 months, whereas the SAO is semiannual and has components in both the mesosphere and stratosphere. Atmospheric motion in the middle atmosphere is influenced by radiative and photochemical processes. Dr. Dunkerton, in collaboration with scientists from the United kingdom, will further investigate the QBO and SAO using a fully coupled two- dimensional radiative-dynamical-photochemical model.

赤道中层平均气流的变率 大气层（15至90公里高度）主要由准- 两年和半年振荡（QBO和SAO， 分别）。 振荡表现为西风 赤道纬向风的相位，并代表一种条件 超旋转的角动量。 的目的 本研究旨在从理论上探讨 这些振荡的动力学。 QBO是一个平流层 这种现象每22至34个月不定期发生一次， 而SAO是半年一次的， 中间层和平流层。 中层大气的大气运动受到影响 通过辐射和光化学过程。 邓克顿博士， 与来自英国的科学家合作， 进一步研究QBO和SAO使用完全耦合的两个- 三维辐射-动力-光化学模型