Some problems and results of solar occultation measurements in the thermosphere. Part I: theoretical questions.
Abstract
The paper is concerned with absorption measurements in the earth's atmosphere by solar occultation experiments, which are able to determine density profiles in the lower thermosphere, in particular, the influence of parameters of absorbing gas and source of radiation on the determination of the density of the absorbing gas. It is found that the spectrum of the radiation source, especially for X-rays, strongly influences the absorption cross section and therefore the resulting gas density profiles. The applicability of the Beer-Lambert absorption law is presumed; this means that scattering effects in the atmosphere are neglected.
- Publication:
-
Space research XVI
- Pub Date:
- 1976
- Bibcode:
- 1976spre.conf..241F
- Keywords:
-
- Density Measurement;
- Gas Density;
- Radiation Absorption;
- Stellar Occultation;
- Thermosphere;
- Absorption Cross Sections;
- Absorption Spectra;
- Density Distribution;
- Satellite Observation;
- Solar Spectra;
- Solar X-Rays;
- Solar Physics