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Calculate Magnetic Perturbations on the Ground from magnetosphere and ionospehere electrodynamics

CCMC Services available for CalcDeltaB
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Model Developer(s)
Lutz Rastaetter
NASA Goddard Space Flight Center

Model Description
Postprocesing tool written in IDL to calculate Biot-Savart sums over magnetosphere, field-aligned currants and ionosphere height-integrated currents to determine magnetic perturbation at any locaton on the ground

Model Input
Three-dimensional Magnetosphere model output files from OpenGGCM, SWMF, LFM or GUMICS, together with ionosphere electrodynamics outputs for matching times.

Model Output
ASCII files of magnetic perturbations (east, north, down component) at a grid of longitudes and latitudes.

Limitations and Caveats
Magnetic perturbations do not include induction due to ground conductivities.

References and relevant publications
L. Rastaetter et al., CalcDeltaB: An efficient postprocessing tool to calculate ground-level magnetic perturbations from global magnetosphere simulations, Space Weather, 12, 553-565, doi:10.1002/2014SW001083 (2014).

CCMC Contact(s)


Developer Contact(s)


National Aeronautics and Space Administration Air Force Materiel Command Air Force Office of Scientific Research Air Force Research Laboratory Air Force Weather Agency NOAA Space Environment Center National Science Foundation Office of Naval Research

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