Physics and chemistry of the mesopause region
Physics and chemistry of the mesopause region
复制标题
DOI：
10.1016/j.jastp.2004.01.032
复制
发表时间：
2004-07
影响因子：
1.9
通讯作者：
Anne K. Smith
中科院分区：
文献类型：
--
作者：
Anne K. Smith
本文基于 2001 年 CEDAR（大气区域能量与动力学耦合）研讨会上的教程演示。它概述了中层绝经区域重要的化学和物理过程。涵盖的主题包括成分、光化学、动力学和运输以及能量预算。特别强调成分变化在连接物理和化学过程中的作用。给出了数值模型和观察的例子来说明这些观点。描述了组合发挥作用的两个具体案例。第一个说明，由于平均环流输送造成的半球二氧化碳差异增强了至点附近的中层顶温度极值。第二个展示了重力波对化学物质的传输如何改变加热结构，从而破坏重力波的稳定性。
This paper is based on a tutorial presentation given at the 2001 CEDAR (Coupling Energetics and Dynamics of Atmospheric Regions) workshop. It gives an overview of chemical and physical processes important in the mesopause region. Topics covered include composition, photochemistry, dynamics and transport, and energy budget. Special emphasis is placed on the role of variations in composition in linking the physical and chemical processes. Examples from numerical models and observations are given to illustrate the points. Two specific cases where composition plays a role are described. The first illustrates that hemispheric differences in CO2due to transport by the mean circulation enhance the mesopause temperature extremes near solstices. The second shows how transport of chemical species by gravity waves can alter the heating structure in such a way as to destabilize the gravity wave.