ACE MAG: Magnetic Field Measurements in Geocentric Coordinates

Hourly magnetic field measurements from the ACE satellite instrument, processed to Level 2 quality for scientific study. The dataset is produced by the National Aeronautics and Space Administration and was last updated in March 2026. Data are provided in Geocentric Solar Ecliptic (GSE) and Geocentric Solar Magnetospheric (GSM) coordinate systems.

Use Cases

• Analyze solar wind magnetic field variations based on hourly time-series measurements.
• Study magnetospheric interactions based on data in Geocentric Solar Magnetospheric (GSM) coordinates.
• Correlate ACE magnetic field data with other solar observations based on the Level 2 quality standard.
• Model space weather events based on geocentric coordinate system data.

Strengths

• Data is processed to Level 2 quality, which the description states is suitable for serious scientific study.
• The ACE Team has worked to ensure the Level 2 data are free from errors.
• Data is provided in multiple standard geocentric coordinate systems (GSE and GSM).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description advises users to consult with ACE Team members before publication, indicating potential complexity or risk of misuse.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measurements from the ACE Magnetic Field Instrument (MAG).

Freshness

Last updated 2026-03-13 04:41:21.168009; freshness should be verified.