Geotail Solar Wind Propagation Data at 1-Minute Resolution

Geotail Weimer propagated solar wind data provides 1-minute resolution measurements of solar wind parameters propagated to a point near Earth's bow shock. The dataset was constructed by Dr. J.M. Weygand for Prof. R.L. McPherron under NSF grants and uses a minimum variance technique for propagation. It was last updated on March 13, 2026.

Use Cases

• Modeling solar wind propagation delays to Earth based on the described minimum variance technique.
• Conducting superposed epoch studies of magnetospheric events as referenced in the description.
• Analyzing solar wind conditions near the bow shock using the propagated time, angle, and goodness data.
• Validating or comparing solar wind propagation methods against the Weimer technique.

Strengths

• Data is processed to a high 1-minute temporal resolution.
• Propagation method is documented in peer-reviewed references (Weimer et al., 2003, 2004).
• Dataset is associated with a specific research context under NSF grants ATM 02-1798 and ATM 02-08501.

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 size are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Solar wind data 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 13:44:08.669870; freshness should be verified.

Geography

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