CEDAR: Mesospheric Temperatures Probed by Simultaneous Measurement of OH and O2 in the Nighthglow

CEDAR：通过同时测量夜光中的 OH 和 O2 探测中层温度

• 批准号: 9908767
• 负责人: Philip Cosby
• 金额: $ 15.6万
• 依托单位: SRI International
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-04-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908767&HistoricalAwards=false
• 关键词: CEDAR; Mesospheric; Temperatures; Probed; Simultaneous

PI: Cosby, PhilipATM-9908767The PI proposes to study the fundamental foundation for the extraction of mesospheric temperatures from OH Meinel band spectra. The extensive historical record of Meinel band observations provides a unique data set for monitoring global change in a region of the atmosphere where changes may be the most dramatic. Inconsistency in results from the historical record of one site to another complicate concrete conclusions from OH emission measurements.To nightglow spectrum used in this initial analysis is the sum of hundreds of individual spectra acquired by 14 groups observing stars or quasars with the HIRES echelle spectrometer on the Keck 1 telescope on Mauna Kea, Hawaii, over a period from December 1994 through May 1997. The spectrum covers the wavelength range from 573 to 893 nm, with total accumulation time in excess of 100 hours on this optically fast instrument. The PI proposes to analyze the individual spectra that comprise this highly averaged sum, characterizing the Meinel band emission together with the O2 0-1 atmospheric band emission with regard to seasons, intense and weak nights, and other pertinent sorting criteria to determine how best to relate the apparent OH rotational temperature from a specific band to the average thermal energy of the mesosphere at the altitude of the emission.

主要研究者：Cosby，PhilipATM-9908767 PI建议研究从OH Meinel带光谱提取中间层温度的基本基础。 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。 不一致的结果从一个网站的历史记录到另一个复杂的具体结论OH emission measurements.To夜光光谱在这个初步分析中使用的是数百个个人光谱的总和，14组观测恒星或类星体与HIRES阶梯光谱仪上的凯克1望远镜的莫纳克亚，夏威夷，在一段时间内从1994年12月至1997年5月。 光谱覆盖573至893 nm的波长范围，在这种光学快速仪器上的总累积时间超过100小时。 PI建议分析包括这个高度平均总和的各个光谱，表征Meinel带发射以及O2 0-1大气带发射，关于季节，强和弱的夜晚，以及其他相关的排序标准，以确定如何最好地将来自特定波段的表观OH旋转温度与发射高度的中间层平均热能联系起来。