Accession Number:

ADA220004

Title:

An Analytic/Empirical Model of the Middle and Low Latitude Ionosphere

Descriptive Note:

Interim scientific rept.

Corporate Author:

AIR FORCE SYSTEMS COMMAND HANSCOM AFB MA GEOPHYSICS LAB

Report Date:

1989-03-31

Pagination or Media Count:

54.0

Abstract:

An improved analyticempirical model of F-layer plasma density is developed by modifying the Chiu 1975 model so as to a better approximate middle latitude F-layer peak heights hmF2s as derived from ionosonde data, and b better model features such as the post-sunset rise in the F-layer peak height, and the equatorial anomaly maxima in plasma density near or - 15 geomagnetic latitude. The latter is accomplished by applying analytic low- latitude correction as derived from differences between the Chiu model and the SLIM model of Anderson et al. Results of a numerical model are also presented that demonstrate the importance of these low-latitude plasma structures tot he neutral dynamics of the thermosphere. Keywords Electron densities Ionospheric model Ionosphere neutral atmosphere coupling.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE