EarthRef.org Digital Archive (ERDA) -- Geomagnetic dipole moment 3ka

Description
The five files contain the geomagnetic dipole moment as given by five continuous, spherical harmonic magnetic field models for the past 3ka. The models, named CALS3k.3, CALS3k_cst.1, ARCH3k.1, ARCH3k_cst.1 and SED3k.1 are based on different subsets of available archeo- and paleomagnetic data and described in detail in the following paper: M. Korte, F. Donadini and C. Constable (2009): Geomagnetic field for 0-3ka: 2. A new series of time-varying global models. Geochem. Geophys. Geosys., 10, Q06008, doi:10.1029/2008GC002297. Please refer to this reference for details about the models.

Instructions
The five files are plain text files with the data organized in columns separated by blank fields. The two or three columns are year (negative values for dates B.C.), dipole moment and uncertainty, if available.