Geotail LEP: Propagated Solar Wind Data at 60-Second Resolution

Geotail Low Energy Particle experiment data propagated to a position just outside the nominal bow shock and linearly interpolated to 60-second resolution in GSM coordinates. The data set was constructed by Dr. J.M. Weygand for Prof. R.L. McPherron, who was the principal investigator of two National Science Foundation studies. These data were primarily used in superposed epoch studies.

Use Cases

• Analyze solar wind propagation delays based on the described minimum variance technique.
• Conduct superposed epoch studies of magnetospheric events using the 60-second resolution data.
• Model magnetopause and bow shock interactions using propagated solar wind parameters.
• Validate space weather prediction models using the interpolated solar wind measurements.

Strengths

• Data is propagated to a specific reference point (about 17, 0, 0 Re) just outside the bow shock.
• Time resolution is precisely defined as 60 seconds (1 minute).
• Methodology is documented with references to published scientific papers (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 is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Propagation using a minimum variance technique and linear interpolation from processed 1-minute resolution solar wind data.

Freshness

Last updated 2026-03-13 03:58:24.593422; freshness should be verified.