HDGM2026 and HDGM2026-RT

The High Definition Geomagnetic Model 2026 (HDGM2026) is a global, high-resolution model (degree 1,040) of the Earth's geomagnetic main and crustal fields, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface for the year 2026. An optional extension to the HDGM is the HDGM-RT, which provides near real-time estimates of the external disturbance field caused by the solar wind and includes a magnetic field model for daily variations due to ionospheric current systems.

World Magnetic Model Error

Submitted by nairm on

The World Magnetic Model (WMM) is the standard model for navigation, attitude, and heading referencing systems that use the  geomagnetic field. WMM is produced by the United States’ National Geospatial-Intelligence Agency (NGA) and the United Kingdom’s Defence Geographic Centre (DGC). CIRES/NCEI and the British Geological Survey (BGS) jointly developed the WMM. This interactive tool visualizes World Magnetic Model (WMM) errors as a function of altitude and geomagnetic activity. 

Errors of the World Magnetic Model as a function of geomagnetic activity and altitude

Liam Kilcommons

CIRES collin.kadlecek@colorado.edu 720-450-5063

Collin Kadlecek

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