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- 2026.04.08
[Frontier Letter] Space magnetometry: mapping Earth’s magnetic field with satellites
This paper by Nils Olsen provides a comprehensive review of satellite magnetometer data processing for mapping Earth's magnetic field. It describes the successive calibration steps — from raw sensor readings to georeferenced magnetic vectors — covering dedicated missions (Ørsted, CHAMP, Swarm, MSS-1) and platform magnetometer satellites (CryoSat-2, GRACE, GRACE-FO). Key topics include sensor non-linearities, spacecraft disturbance characterisation, temperature dependencies, and vector alignment. The paper highlights that while platform magnetometers cannot replace dedicated missions, they substantially improve spatial and temporal coverage. Recent advances in automated monthly calibration of CryoSat-2 and an independent recalibration of GRACE-FO data are also presented.
- Olsen 2026: [Frontier Letter] Space magnetometry: mapping Earth’s magnetic field with satellites. Earth Planets Space 78:59, https://doi.org/10.1186/s40623-026-02381-3
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