pyarts3.arts.igrf

arts.igrf(pos: pyarts3.arts.Vector3, ell: pyarts3.arts.Vector2 = [6378137, 6356752.314245], t: pyarts3.arts.Time = '2025-09-04 05:22:39.501201374') → pyarts3.arts.Vector3

Compute the magnetic field according to IGRF

The coefficients are builtin and available for the years 2000-2020. No secular variation is taken into account beyond an interpolation between the available years.

Parameters:

• pos (Vector3) – The position in [alt, lat, lon] (geodetic)

• ell (Vector2, optional) – The ellipsoid (a, b), default is WGS84 [6378137.0, 6356752.314245]

• t (Time, optional) – A time stamp, default is the current time