Accession Number:

AD0738330

Title:

Global Temperature and Density Structure in the Lower Thermosphere,

Descriptive Note:

Corporate Author:

UNIVERSITY COLL LONDON (ENGLAND) DEPT OF PHYSICS

Personal Author(s):

Report Date:

1971-08-01

Pagination or Media Count:

27.0

Abstract:

Neutral temperature and molecular diffusion coefficient measurements at mid-latitude and in the auroral zone are used to derive global models of temperature, air density and pressure in the lower thermosphere. The models, applicable to geomagnetically quiet periods, below 200 km and for the period 1967-1970 of relatively high solar activity, differ substantially from earlier models derived from satellite drag data. The small sample of temperature measurements available for the analysis about 50 in total has naturally resulted in an inferior description of the total sources of variability of upper atmosphere structure compared with the analyses and computations of Jacchia 1965 and 1970 for example. The data have therefore been used to demonstrate three clear observations which have not appeared in previous analyses. Author

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE