Serendipity and the Utlization of the Spacelab Imaging Spectrometric Observatory as a Test Class-A Spectroscopy Facility for CEDAR

机缘巧合以及利用 Spacelab 成像光谱观测站作为 CEDAR 测试 A 级光谱设施

• 批准号: 8714461
• 负责人: Douglas Torr
• 金额: $ 7.2万
• 依托单位: University of Alabama in Huntsville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-15 至 1988-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8714461&HistoricalAwards=false
• 关键词: Serendipity; Utlization; Spacelab; Imaging; Spectrometric

A NASA Spacelab flight instrument is available for ground based observations for a period of a year owing to the delays in flight schedules caused by the Challenger accident. It is proposed to operate this highly sophisticated set of spectrographs with intensified CCD detectors at McDonald Observatory until June 1988, to obtain spectra of upper atmosphere emissions in twilight. The spectra would be used in the inversion of a thermospheric photochemistry model in an attempt to deduce changes in the composition and temperature of the thermosphere on a day to day basis, in conformity with a CEDAR project. The thermospheric composition and temperature change in response to auroral zone energy inputs which propagate over the globe, and to changing solar ultraviolet fluxes on a seasonal and solar cycle basis. Currently the composition changes can only be determined by in-situ spacecraft observations. The PI has both the observational and the theoretical background to make full use of the data once obtained, and to provide input to the aeronomy community. They will then be able to design the optimum observing program and instrumental configuration for CEDAR to determine atmospheric composition changes in coordinated multistation campaigns.

由于挑战者号事故导致飞行时间表延误，美国宇航局太空实验室飞行仪器可用于地面观测一年。 建议在 1988 年 6 月之前在麦克唐纳天文台操作这套带有增强型 CCD 探测器的高度精密的光谱仪，以获得暮光下高层大气排放的光谱。 这些光谱将用于热层光化学模型的反演，以尝试推断热层的成分和温度每天的变化，以符合 CEDAR 项目。 热层成分和温度的变化响应于在全球范围内传播的极光带能量输入，以及季节性和太阳周期变化的太阳紫外线通量。目前，成分变化只能通过航天器现场观测来确定。 PI 具有观测和理论背景，可以充分利用获得的数据，并向航空界提供投入。然后，他们将能够为 CEDAR 设计最佳观测计划和仪器配置，以确定协调的多站活动中的大气成分变化。