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

PI建议在500-1100 nm的光谱范围内对夜光中广泛的羟基自由基(OH)Meinel带进行分析。将包括15个不同的OH带，其上限能级在v=3-9的范围内，并具有多个共同发射能级的例子。将使用的数据来自莫纳克亚的W·M·凯克天文台获得的天文光谱。这些数据将根据标准恒星光谱进行仔细校准，以便可以在整个光谱范围内比较真实的相对强度。这一程序将使其有可能确定目前在空气动力学领域使用的哪一种转移概率测定更有效，如果没有一种被认为是足够的，则可以提出经验修正。OH Meinel荧光被广泛用于监测夜间中间层条件，而Meinel波段观测的广泛历史记录为监测变化可能最剧烈的大气区域的全球变化提供了独特的数据集。

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.