A Spherical Harmonic model of Earth's lithospheric magnetic field up to degree 1050

This model describes the Earth's vector lithospheric (or crustal ) magnetic field to about 40-km spatial resolution. It is provided in the form of Spherical Harmonic (SH) Gauss coefficients using the norm commonly used in geomagnetism (the Schmidt normalization). The file is in (zipped) ascii with 4 columns: the SH degree, the SH order, the Gnm and the Hnm parameters. The model was obtain after selecting and processing magnetic field measurements from the German CHAMP and ESA Swarm satellites that were merged with worldwide near-surface scalar anomaly data compiled over decades. A description of the scientific procedure and the model assessments are described in a paper under publication at Geophysical Research Letters. Please consider citing the GRL paper: Thébault E., Hulot G., Langlais B., and Vigneron P., A Spherical Harmonic model of Earth’s lithospheric magnetic field up to degree 1050, Geophys. Res. Lett., 2021