The model of the Earth for the test in this paper is the global lithospheric magnetic field model GRIMM_L120 (version 0.0).

The reference for this field model is as following:
Lesur, V., Rother, M., Vervelidou, F., Hamoudi, M., and Thbault, E.: Post-processing scheme for modeling the lithsopheric magnetic field, Solid Earth, 4, 105C118, 2013.
