Infrared and Optical Aeronomy of Thermospheres, Exospheres, and Ionospheres

热层、外逸层和电离层的红外和光学航空学

• 批准号: 9714916
• 负责人: Robert Kerr
• 金额: $ 26.32万
• 依托单位: Scientific Solutions Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-04-15 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714916&HistoricalAwards=false
• 关键词: Infrared; Optical; Aeronomy; Thermospheres; Exospheres

Continuing to use transportable, broad pass-band, Fabry-Perot spectrometers, the investigator determines composition, temperature, winds and fluxes in planetary thermospheres and exosphere, particularly emphasizing those regions in earth's atmosphere. Expanding upon results obtained from previous research, he is conducting five related projects: (1) measuring infrared neutral, metastable helium to determine neutral temperature, neutral helium density, and neutral winds near the earth's exobase; (2) measuring infrared OI 8446 angstrom emission to establish a new technique for determining thermospheric at5omic oxygen density in conjunction with adapted photoelectron models; (3) establishing a new ground-based technique to determine the abundance of nitric oxide in the lower thermosphere using infrared emission measurements; (4) measuring the altitude profile of atomic hydrogen density from 350-10,000 kilometers, the effective hydrogen temperature, and the hydrogen escape flux; and (5) searching for supra-thermal sodium atoms and sulfur atoms in Mercury's atmosphere.

继续使用可移动的宽带法布里-珀罗光谱仪，研究人员确定了行星热层和地外层中的成分、温度、风和通量，特别是强调了地球大气层中的那些区域。在前人研究成果的基础上，他正在进行五个相关项目：(1)测量红外中性、亚稳态氦，以确定地球外基区附近的中性温度、中性氦密度和中性风；(2)测量红外OI 8446埃发射，以建立一种结合改进的光电子模型来确定热层大气层氧密度的新技术；(3)建立一种新的地面技术，利用红外发射测量低热层中一氧化氮的丰度；(4)测量350-10,000公里范围内氢原子密度的高度分布、有效氢温度和氢逃逸通量；以及(5)在水星大气中寻找过热的钠原子和硫原子。