Institute für Physikalische Messtechnik

Heidenhofstr. 8

7800 Freiburg

Federal Republic of Germany

**Brief Description**:

This model provides the global electron temperature between 300 km and 700 km
altitude for two local times (3 a.m. and 3 p.m.). It is based on data collected by
the AEROS retarding potential analyzer through the first 100 days in 1973.
Spherical harmonics up to degree and order 3 are used to describe the electron
temperature as a function of geomagnetic latitude and longitude. Altitude
variations are represented by a power series of degree 3. Two sets of the 36
coefficients each are listed, one for 3 p.m. and one for 3 a.m..

**Availability**: ALGOL code may be available from the authors.

**References**:

K. Spenner and R. Plugge, Empirical Model of Global Electron Temperature Distribution Between
300 and 700 km Based on Data from AEROS-A, J. Geophys. 46, 43, 1979.

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