Parker Solar Probe FIELDS: Search Coil Magnetometer Cross Spectra, Level 2

Cross spectra data from the Digital Fields Board (DFB) search coil magnetometer on the Parker Solar Probe spacecraft. The dataset contains calibrated power spectral densities, coherence, and phase for magnetic field and voltage signals, expressed in sensor-specific coordinates. It is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Analyzing spectral slopes and wave features in the solar wind based on calibrated power spectral densities.
• Studying wave coherence and phase relationships between magnetic field components.
• Investigating the evolution of magnetic field spectra across different Parker Solar Probe orbits.
• Validating and comparing results with higher-level (Level 3) data products that include additional corrections.

Strengths

• Data is calibrated for instrument-specific effects including Hanning window, in-band gain, and analog/digital filter responses.
• Provides both magnetic field (nanoTesla^2/Hz) and voltage (Volts^2/Hz) quantities.
• Includes cross-spectral terms (real/imaginary parts, coherence, phase) as functions of frequency and time.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Voltage sensor data lacks corrections for plasma sheath impedance and antenna effective length, which are applied in Level 3 products.
• Digital filter compensation may introduce a non-physical positively sloped power trend at high frequencies in noisy signals.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the FIELDS experiment's Digital Fields Board (DFB) on the Parker Solar Probe spacecraft.

Time Range

Covers solar orbits 1, 2, and 3+; specific date ranges are not provided in the input.

Freshness

Last updated 2026-03-13 08:04:14.541123; freshness should be verified.

Geography

Data collected in space during the Parker Solar Probe mission's trajectory near the Sun.