Parker Solar Probe FIELDS: Low-Frequency Magnetic Field Spectra in Sensor Coordinates

NASA's Parker Solar Probe FIELDS instrument provides calibrated low-frequency (<75 kHz) magnetic field power spectral density data. The Level 2 data products are expressed in sensor coordinates (e.g., [d,e,f] or [u,v,w]) and have units of nanoTesla squared per Hertz. This dataset was last updated on March 13, —.

Use Cases

• Analyzing solar wind turbulence and wave modes based on low-frequency magnetic field spectra.
• Studying the evolution of plasma sheath effects by comparing Level 2 (uncorrected) and Level 3 (corrected) data products mentioned in the description.
• Investigating spectral slopes and high-frequency noise features, noting the described non-physical trend introduced by digital filter compensation.
• Comparing magnetic field behavior across different solar orbits using the described coordinate system rotations ([d,e,f] vs. [u,v,w]).

Strengths

• Data is calibrated for six specific factors including Hanning window, in-band gain, and filter responses as detailed in the description.
• Provides spectral data with pseudo-logarithmically spaced frequency bins, suitable for analyzing a wide dynamic range.
• Managed by NASA, a authoritative source for space mission data.

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 reserved for Level 3 products.
• Row count and dataset size are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Time Range

Covers solar orbits 1, 2, and beyond, as indicated by coordinate system descriptions.

Freshness

Last updated 2026-03-13 08:13:19.889873; freshness should be verified.

Geography

Data collected in-situ by the Parker Solar Probe spacecraft in the heliosphere, near the Sun.