pyarts3.arts.igrf

arts.igrf(pos: pyarts3.arts.Vector3, ell: pyarts3.arts.Vector2 = [6378137, 6356752.314245], t: pyarts3.arts.Time = 2026-09-18 06:17:58.887583503) → 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 (~pyarts3.arts.Vector2, optional) – The ellipsoid (a, b), default is WGS84 [6378137.0, 6356752.314245]

• t (~pyarts3.arts.Time, optional) – A time stamp, default is the current time