Pioneer Venus Orbiter: Hourly Solar Wind Plasma Data, 1978-1992

Hourly-averaged solar wind plasma data from the Pioneer Venus Orbiter spacecraft, spanning its cruise and orbital mission phases from May 1978 to October 1992. The National Aeronautics and Space Administration (NASA) collected this data using the Orbiter Plasma Analyzer (OPA) experiment, primarily measuring conditions outside the Venusian bow shock. Each record includes derived parameters like proton temperature, plasma density, bulk speed, and flow angles, along with their RMS dispersion.

Use Cases

• Modeling solar wind interaction with Venus based on plasma density and flow angle measurements.
• Analyzing long-term solar wind variability based on 14 years of hourly-averaged parameters.
• Correlating plasma conditions with magnetic field data from merged datasets mentioned in the description.
• Studying proton temperature trends in the interplanetary medium near Venus.

Strengths

• Covers a 14-year time range from May 1978 to October 1992.
• Provides hourly-averaged derived plasma parameters, including proton temperature, density, and speed.
• Includes RMS dispersion for each averaged quantity, indicating data quality.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Measurements made inside the Venusian bow shock were mostly excluded, limiting in-situ planetary analysis.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the Plasma Analyzer (OPA) experiment on the Pioneer Venus Orbiter spacecraft.

Time Range

May 1978 to October 1992

Freshness

Last updated 2026-03-13 07:48:36.549256; freshness should be verified.

Geography

Interplanetary space near Venus, primarily outside the Venusian bow shock.