The Interaction of Horizontal Transport and Photochemistry in the Stratosphere

平流层水平传输与光化学的相互作用

• 批准号: 8913729
• 负责人: Murry Salby
• 金额: $ 29.79万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-15 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913729&HistoricalAwards=false
• 关键词: Interaction; Horizontal; Transport; Photochemistry; Stratosphere

This project represents an interdisciplinary, collaborative effort between the principal investigator and scientists at NOAA's Aeronomy Laboratory and the National Center for Atmospheric Research. It consists of a study of the stratosphere involving elements of dynamics, transport, and chemistry. In order to understand distributions of ozone and other chemical species, the dynamical processes responsible for mixing and transport must be understood. Of particular interest is the role of transient eddies in the transport of chemical species form the equatorial to polar regions. The evolution of the stratospheric flow is quite complex: the periodic displacement and distortion of the polar vortex results in very small-scale, asymmetric distributions of chemical species that cannot be adequately resolved temporally or spatially by existing observing systems. The goal of this project is to develop a high (horizontal) resolution numerical model to further investigate this phenomenon and to identify the physical mechanisms involved. Because the stratosphere is characterized by flows of deep vertical extent, the co- investigators will employ a two-dimensional model to look at the interaction between eddy transport and photochemistry. In addition, they will explore the role of polar stratospheric clouds in altering the photochemistry of the stratosphere. This results of this research will have important implications for understanding of both atmospheric dynamics and atmospheric chemistry.

这个项目代表了一个跨学科， 主要研究者和 美国国家海洋和大气管理局高层大气物理学实验室和国家 大气研究中心。 它包括一项研究， 平流层，涉及动力学、运输和 化学. 为了了解臭氧的分布， 其他化学物种，负责的动态过程 必须理解混合和运输。 特别 感兴趣的是瞬态涡流在运输中的作用， 从赤道到极地的化学物种。 的 平流层气流的演变是相当复杂的： 极涡的周期性位移和畸变 导致非常小规模的，不对称的分布， 暂时无法充分分离的化学物质 或通过现有的观测系统在空间上进行。 这个目标 项目是开发一个高（水平）分辨率数值 模型，以进一步研究这一现象，并确定 所涉及的物理机制。 因为平流层 以垂直深度的流动为特征， 研究人员将采用二维模型来观察 涡动输运与光化学之间的相互作用。 在 此外，他们还将探索极地平流层的作用， 云改变平流层的光化学。 这项研究的结果将具有重要意义 对理解大气动力学和 大气化学