High Resolution Observations of Hydroxyl Radical (OH) and Oxygen (O2) Emissions in the Terrestrial Nightglow

地面夜辉中羟基自由基 (OH) 和氧气 (O2) 排放的高分辨率观测

• 批准号: 0139344
• 负责人: Philip Cosby
• 金额: $ 23.98万
• 依托单位: SRI International
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-15 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0139344&HistoricalAwards=false
• 关键词: Resolution; Observations; Hydroxyl; Radical; OH

The PI proposes to carry out analyses on a broad range of hydroxyl radical (OH) Meinel bands in the nightglow throughout the 500-1100 nm spectral region. Included will be 15 different OH bands, with upper levels in the v = 3-9 range and with multiple examples of common emitting levels. The data to be used come from astronomical sky spectra obtained at the W. M. Keck Observatory on Mauna Kea. The data will be carefully calibrated against standard star spectra, so that true relative intensities can be compared over the entire spectral range. This procedure will make it possible to determine which of the current transition probability determinations in use in the aeronomic community is the more valid, and to propose an empirical correction if none are deemed adequate. The OH Meinel fluorescence is widely used to monitor nightside mesospheric conditions, and the extensive historical record of Meinel band observations provides a unique data set to monitor global change in a region of the atmosphere where change may be the most dramatic.

PI建议在整个500-1100 nm光谱区域的夜光中对广泛的羟基自由基（OH）Meinel带进行分析。 包括15个不同的OH带，上限在v = 3-9范围内，并有多个共同发射水平的例子。 所用的数据来自在W. M.莫纳克亚山上的凯克天文台。 这些数据将根据标准星星光谱进行仔细校准，以便在整个光谱范围内比较真实的相对强度。 这一程序将使人们有可能确定目前在空气动力学界使用的转移概率确定方法中哪一种更有效，如果认为没有一种方法是适当的，就提出一种经验修正。 OH Meinel荧光被广泛用于监测夜侧中间层条件，Meinel波段观测的广泛历史记录提供了一个独特的数据集，用于监测变化可能最剧烈的大气区域的全球变化。