Observations and Analysis of Atmospheric Hydroxyl

9521767 Minschwaner这个项目将是科罗拉多州弗里茨峰长达18年的羟基自由基(OH)观测记录的延续。对308 nm处的太阳光的共振吸收进行了地面测量，以得出大气中的OH柱量。OH是大气中最活跃的化学成分之一。OH的光化学与平流层臭氧的收支密切相关，是氮和氯化合物破坏臭氧效率的主要因素。OH的测量对于了解地球大气中的自然和人为变化至关重要。除了在Fritz Peak继续进行测量外，第二台类似的仪器将在新墨西哥州采矿和技术研究所翻新，并与Fritz Peak和其他仪器进行相互比较。将对新数据和现有记录进行模拟和分析，以便更好地了解OH的季节和长期行为及其与大气组成的其他变化的相互关系。

9521767 Minschwaner This project will be a continuation of the 18-year hydroxyl radical (OH) observation record at Fritz Peak, Colorado. Ground-based measurements of the resonant absorption of sunlight at 308 nm are performed to yield atmospheric OH column amounts. OH is one of the most chemically active constituents in the atmosphere. The photochemistry of OH is intimately connected to the budget of stratospheric ozone and is a major factor in the efficiency of ozone destruction by nitrogen and chlorine compounds. Measurements of OH are crucial to understanding natural and anthropogenic change in the Earth's atmosphere. In addition to the continued measurements at Fritz Peak, a second, similar instrument will be refurbished at New Mexico Institute of Mining and Technology and intercompared with the Fritz Peak as well as other instruments. Modeling and analysis will be carried out on the new data as well as the existing record in order to better understand the seasonal and long-term behavior of OH and its interrelationship with other changes in composition of the atmosphere.