MMS FPI DES Partial Plasma Moments: 4.5 s Survey Data

Partial plasma distribution moments from the Fast Plasma Investigation's Dual Electron Spectrometer on NASA's Magnetospheric Multiscale mission. Data are provided at 4.5-second survey resolution and include parameters like density_part, integrated from a specific energy step to infinity. The dataset was last updated on March 13, 2026.

Use Cases

• Analyze partial plasma density based on the density_part parameter.
• Study plasma velocity space distributions based on partial moment integrals.
• Compare plasma behavior inside and outside the mission's Region of Interest based on survey mode data.
• Investigate instrument calibration effects on plasma measurements based on calibration activity notes.

Strengths

• Data includes partial moments integrated from specific energy steps to infinity.
• Survey resolution data at 4.5 seconds is downlinked for all observations.
• Dataset is maintained by the National Aeronautics and Space Administration.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to specific mission phases and calibration activities.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data collected by the Fast Plasma Investigation instrument on the Magnetospheric Multiscale mission.

Freshness

Last updated 2026-03-13 08:44:22.262198; freshness should be verified.