ACE ULEIS: Hourly Ion Fluxes for Solar and Interplanetary Particle Studies

The ACE Ultra Low Energy Isotope Spectrometer (ULEIS) Level 2 dataset provides hourly measurements of ion fluxes. It covers hydrogen through nickel ions in energy ranges from about 20 keV/nucleon to 10 MeV/nucleon, including suprathermal and energetic particles. This data is produced by the National Aeronautics and Space Administration (NASA) for studying solar energetic particle composition and acceleration mechanisms.

Use Cases

• Modeling solar energetic particle acceleration mechanisms based on elemental and isotopic composition data.
• Analyzing interplanetary shock wave ion energization based on suprathermal particle flux measurements.
• Studying space weather particle events based on hourly time-series flux data.
• Investigating ultra-heavy ion species (mass above nickel) based on limited energy range measurements near 0.5 MeV/nucleon.

Strengths

• Data is explicitly described as Level 2, which suggests a processed, science-ready product.
• The instrument measures a broad charge range from hydrogen through nickel and a wide energy range from about 20 keV/nucleon to 10 MeV/nucleon.
• The dataset provider, NASA, is a highly authoritative source for space science data.

Limitations

• Description metadata is limited; actual data quality, column definitions, and row count require manual inspection after download.
• The license is listed as 'other-license-specified' with strong usage caveats, requiring consultation with the ACE team before publication.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measurements from the Ultra Low Energy Isotope Spectrometer (ULEIS) instrument on the ACE spacecraft.

Time Range

null

Freshness

Last updated 2026-03-13 14:31:47.184211; freshness should be verified.

Geography

null