ACE Weimer Propagated Solar Wind Magnetic Field Data at 60-Second Resolution

NASA's Advanced Composition Explorer (ACE) satellite provides propagated solar wind data, processed to a 60-second resolution. The data consists of tri-axial fluxgate magnetometer measurements in Geocentric Solar Ecliptic (GSE) coordinates, propagated to a point just outside Earth's bow shock using a minimum variance technique. This dataset was constructed by Dr. J.M. Weygand for Prof. R.L. McPherron under National Science Foundation grants and was used in superposed epoch studies.

Use Cases

• Predicting interplanetary magnetic field (IMF) propagation delays based on the described minimum variance technique.
• Conducting superposed epoch analyses of solar wind events as referenced in the description.
• Modeling solar wind conditions near Earth's bow shock using the propagated 60-second resolution data.
• Analyzing tri-axial magnetic field vector behavior in GSE coordinates.

Strengths

• Data is processed to a consistent 60-second temporal resolution.
• Propagation method is documented in peer-reviewed references (Weimer et al., 2003, 2004).
• Originates from the authoritative ACE satellite mission managed by NASA.

Limitations

• The propagation method does not work well for shocks and minimum variance directions with tilts greater than 70 degrees of the sun-earth line, as stated in the description.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA), Advanced Composition Explorer (ACE) satellite.

Collection Method

Solar wind data propagated to a position just outside the nominal bow shock and linearly interpolated to 1-minute resolution.

Time Range

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Freshness

Last updated 2026-03-13 13:51:44.489699; freshness should be verified.

Geography

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