Journal of Geodesy

, Volume 72, Issue 3, pp 161–178

Improvement of the empirical thermospheric model DTM: DTM94 – a comparative review of various temporal variations and prospects in space geodesy applications

  • C. Berger
  • R. Biancale
  • M. Ill
  • F. Barlier
Article

DOI: 10.1007/s001900050158

Cite this article as:
Berger, C., Biancale, R., Ill, M. et al. Journal of Geodesy (1998) 72: 161. doi:10.1007/s001900050158

Abstract.

The Drag Temperature Model (1978) has been improved to respond better to the actual requirements of space geodesy, especially under extreme solar and geomagnetic conditions. Extended data and an improved algorithm have been considered, leading to valuable improvements. Temporal variations of temperature of the thermopause, total density and major chemical constituent density are reviewed and compared to the DTM94, DTM78 and MSIS86 models. A comparison with data is performed, giving the mean ratios between observed and model values with their root mean squares for different physical and geometric conditions. This comparison is made for the three models and includes data used in the modelling as well as external data. The limits of the thermosphere modelling are discussed.

Key words. Thermosphere models Non-gravitational forces Air drag Orbit determination Space geodesy 

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • C. Berger
    • 1
  • R. Biancale
    • 2
  • M. Ill
    • 3
  • F. Barlier
    • 1
  1. 1.Observatoire de la Côte d'Azur, Groupe de Recherche de Géodésie Spatiale, Avenue Copernic, F-06130 Grasse, France Tel.:+33 493 405353; e-mail: berger@obs-azur.frFR
  2. 2.Observatoire Midi Pyrénées, Groupe de Recherche de Géodésie Spatiale, 14 Avenue Edouard Belin, F-31400 Toulouse, FranceFR
  3. 3.Budapest Observatory, HungaryHU

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