Last Updated: 12/09/2023


Version: 1.0

CM5 is a member of a suite of "Comprehensive Models" (CMs) that describes the near-Earth magnetic field and has been developed by NASA/GSFC and the Danish Technical University. The concept behind the CMs is to parameterize all major near-Earth magnetic field sources (core, lithosphere, M2 tidal, magnetosphere, ionosphere, associated induced fields, and toroidal fields within satellite sampling shells) and subsequentally co-estimate these in order to achieve optimal field separation. CM5 is an empirical inverse model derived from pre-Swarm satellite data (CHAMP, Oersted, and SAC-C) and ground observatory data from August 2000 to January 2013.


Spatial and temporal locations, and the F10.7 cm radio flux value


  1. The (North,East,Down) components of the magnetic field vector separately for the sources: Core/lithosphere M2 tidal Primary magnetosphere Induced magnetosphere Primary ionosphere Induced ionosphere

  2. Limited sets of coefficients for each field source.


  • Geospace



Publication Policy

In addition to any model-specific policy, please refer to the General Publication Policy.