Retrieval of Column Concentrations of OH and Tropospheric 03 From Data Obtained by Ground-Based High Resolution UV- Visible Spectroscopy

# ATM-9526209 Yung提出了一项为期一年的可行性研究，旨在提高对平流层、中间层和对流层臭氧的认识和理解。该项目包括两个部分：地面高分辨率紫外-可见光谱测量的OH和对流层臭氧综合垂直柱的检索，以及观测量的时间变化模型。（独立资助的）光谱测量将在JPL的桌山天文台进行，使用太阳直接吸收的OH和太阳天顶散射的O3。模型计算将使用加州理工-喷气推进实验室的一维光化学模型进行。将观测到的OH柱密度的日变化和季节变化与模式计算进行比较，以检验我们对HOx动力学和光化学的理解，以及其他影响HOx收支的平流层物种的时空分布。

# ATM-9526209 Yung A one-year feasibility study is proposed which is aimed at improving the knowledge and understanding of HOx in the stratosphere and mesosphere and ozone in the troposphere. The program consists of two elements: retrieval of the integrated vertical column of OH and tropospheric ozone measured by ground-based high resolution UV-visible spectroscopy, and modeling of the temporal variations in the observed quantities. The (independently funded) spectroscopic measurements will be performed at JPL's Table Mountain Observatory using direct solar absorption for OH and zenith solar scattering for O3. The model calculations will be performed using the Caltech-JPL one-dimensional photochemical model. The observed diurnal and seasonal variability of the OH column density will be compared with model calculations to test our understanding of HOx kinetics and photochemistry and the spatial and temporal distributions of other stratospheric species that affect the HOx budget.