Propagated Solar Wind Data at 1-Minute Resolution for Magnetospheric Studies

NASA data propagated to a position just outside Earth's nominal bow shock using a minimum variance technique. The dataset contains linearly interpolated time delay, cosine angle, and goodness information at 1-minute resolution, originally constructed for National Science Foundation studies. It was last updated in March 2026.

Use Cases

• Predicting interplanetary magnetic field (IMF) propagation delay times based on the described minimum variance technique.
• Conducting superposed epoch studies of magnetospheric events based on the propagated solar wind parameters.
• Analyzing solar wind propagation anomalies near shocks or with high tilt angles, as noted in the description's limitations.

Strengths

• Data is propagated to a specific reference position (about 17, 0, 0 Re) outside the bow shock.
• Provides 1-minute temporal resolution for detailed time-series analysis.
• Based on a documented method from peer-reviewed publications (Weimer et al., 2003; 2004).

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.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file formats are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Solar wind data processed by Dr. J.M. Weygand, propagated using a minimum variance technique and linearly interpolated to 1-minute resolution.

Time Range

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Freshness

Last updated 2026-03 13:25:55.333857; freshness should be verified.

Geography

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