ACE SWICS 2.0: Solar Wind Proton Densities and Speeds

NASA's ACE spacecraft provides 12-minute measurements of solar wind proton densities, speeds, and thermal speeds from the mission's start to the present. The densities have been cross-calibrated with ACE/SWEPAM and WIND/SWE instruments, creating a continuous dataset suitable for standalone analysis or integration with other SWICS data.

Use Cases

• Model solar wind propagation based on proton speed measurements
• Analyze solar wind density variability for space weather forecasting
• Correlate proton thermal speeds with other solar wind parameters
• Validate solar wind models using cross-calibrated density data

Strengths

• Data is cross-calibrated with two independent proton monitors (ACE/SWEPAM and WIND/SWE)
• Provides a continuous record from the mission's beginning to present day
• Time resolution is 12 minutes

Limitations

• 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

Data collected by the SWICS instrument on the ACE spacecraft.

Time Range

From the beginning of the ACE mission to the present day.

Freshness

Last updated 2026-03-13 04:39:27.286476