Ground-based Observations and Analysis of the Vertical Column Abundance of Atmospheric Hydroxyl

羟基（OH）是一种大气自由基，在研究平流层臭氧的光化学和了解人为氮和氯化合物催化破坏臭氧的作用方面具有重要意义。平流层臭氧层保护地球上的生命形式免受太阳紫外线辐射的破坏性影响，对其完整性的准确预测需要对相关光化学过程的详细了解。氢氧根的测量和对其行为的理解是这一知识体系的重要组成部分。根据这项建议，将继续在科罗拉多州弗里茨峰天文台和新西兰兰德科学和工业研究部大气站进行的垂直柱丰度测量，直至1995年中期。这些是OH分子吸收阳光的高分辨率光谱测量。拟议的工作将是科罗拉多州15年观测系列和新西兰3年观测系列的延续。将继续进行分析研究和大气模式比较，以了解造成这一广泛数据库中观测到的行为的机制。

Hydroxyl (OH) is an atmospheric free radical of importance in the study of the photochemistry of stratospheric ozone and in the understanding of the roles of anthropogenic nitrogen and chlorine compounds which catalytically destroy ozone. The stratospheric ozone layer shields the earth's lifeforms from the damaging effects of solar ultraviolet radiation, and accurate predictions regarding its integrity require detailed knowledge of relevant photochemical processes. Measurements of OH and an understanding of its behavior are essential components of this body of knowledge. Ongoing vertical column abundance measurements at Fritz Peak Observatory, Colorado, and the Department of Scientific and Industrial Research Atmospheric Station in Lauder, New Zealand, will be continued through mid-1995 under this proposal. These are high resolution spectroscopic measurements of the absorption of sunlight by the OH molecule. The proposed work will be a continuation of the 15 year observation series in Colorado and of the 3 year series in New Zealand. Analytical studies and atmospheric model comparisons will continue in an effort to understand the mechanisms responsible for the observed behaviors of this extensive database.