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Densities and temperatures in the polar thermosphere
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gardner, L. J. |
| Copyright Year | 1977 |
| Description | The atomic oxygen density at 120 km, the 630 nm airglow temperature, the helium density at 300 km and the molecular nitrogen density near 400 km were examined as functions of geomagnetic latitude, geomagnetic time, season and magnetic activity level. The long-term averages of these quantities were examined so as to provide a baseline of these thermospheric parameters from which future studies may be made for comparison. The hours around magnetic noon are characterized by low temperatures, high 0 and He densities, and median nitrogen densities. The pre-midnight hours exhibit high temperatures, high He density, low nitrogen density and median 0 densities. The post-midnight sector shows low 0 and He densities, median temperatures and high nitrogen densities. These results are compared to recent models and observations and are discussed with respect to their causes due to divergence of the wind field and energy deposition in the thermosphere. |
| File Size | 14354650 |
| Page Count | 157 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770021721 |
| Archival Resource Key | ark:/13960/t7zm04n56 |
| Language | English |
| Publisher Date | 1977-06-30 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Geomagnetism Oxygen Solar Temperature Molecular Diffusion Flux Density Nitrogen Helium Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
