MMS FPI-DIS: Magnetospheric Plasma Partial Moments, 4.5-Second Resolution

Partial plasma moment data from the Magnetospheric Multiscale (MMS) mission's Fast Plasma Investigation Dual Ion Spectrometer. The dataset contains quantities like density_part, integrated over a limited portion of velocity space, and is available at Fast Survey (4.5-second) and Slow Survey (60-second) resolutions depending on the mission's region of interest. It is produced by the National Aeronautics and Space Administration, with metadata last updated in March 2026.

Use Cases

• Analyzing ion density and velocity distributions in Earth's magnetosphere based on partial moment integrals.
• Studying plasma behavior in different mission phases (Fast vs. Slow Survey) based on the region of interest.
• Investigating instrument calibration and operational state effects using included time stamps and annotation parameters.

Strengths

• Data is collected by a dedicated NASA mission (MMS) designed for magnetospheric studies.
• Provides multiple temporal resolutions (4.5-second Fast Survey, 60-second Slow Survey) for different scientific contexts.
• Includes partial moments, which are specific integrals over a limited velocity space, differentiating it from standard moment products.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data availability varies by mission phase and resolution; not all high-resolution Burst data is downlinked.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the Fast Plasma Investigation Dual Ion Spectrometer (FPI-DIS) instrument aboard the Magnetospheric Multiscale (MMS) spacecraft.

Freshness

Last updated 2026-03-13 06:13:12.122136; freshness should be verified.

Geography

Earth's magnetosphere and surrounding regions of interest.