STEREO-A: Hourly Solar Wind and Energetic Particle Measurements

Hourly averaged data from NASA's STEREO-A spacecraft, derived from high-resolution in-situ measurements of the solar wind and energetic particles. The dataset includes magnetic field averages, plasma parameters, and particle fluxes from multiple instruments, processed by the NSSDC Coordinated Heliospheric Observations Web. Data were last updated in March 2026.

Use Cases

• Modeling solar wind propagation based on proton and ion densities, speeds, and velocity vector flow angles.
• Analyzing coronal mass ejection impacts based on magnetic field data and energetic particle fluxes.
• Studying solar energetic particle events based on data from the Low Energy Telescope, High Energy Telescope, and Suprathermal Ion Telescope.

Strengths

• Data originates from NASA's STEREO-A spacecraft, a primary source for in-situ heliospheric measurements.
• Includes hourly averages for magnetic field and plasma parameters, providing a consistent temporal resolution.
• Integrates measurements from multiple specialized instruments (IMPACT, PLASTIC, SEP suite).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided in BIN and HTML formats, which may require specialized tools for processing.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Hourly averages created from high-resolution in-situ measurements from the STEREO-A spacecraft, processed by GSFC/SPDF and UNH.

Time Range

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Freshness

Last updated 2026-03-13 04:48:42.109186; freshness should be verified.

Geography

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