MARSIS: Mars Express Active Ionospheric Sounder Spectral Density Data

MARS Express MARSIS Active Ionospheric Sounder data includes full-resolution spectral information calibrated in spectral density units. The dataset covers the seventh extended mission of the Mars Express spacecraft, providing spectrogram overview plots and individual ionograms for each sounding activity. It was produced by the National Aeronautics and Space Administration and last updated in March 2026.

Use Cases

• Analyzing Martian ionospheric structure based on spectral density measurements
• Modeling radio wave propagation through the Martian atmosphere based on ionogram data
• Studying temporal changes in the Martian ionosphere based on spacecraft event time series

Strengths

• Data is calibrated in units of spectral density, suggesting a processed, quantitative format
• Includes both spectrogram overview plots and individual ionograms for each sounding activity
• Produced by the authoritative source National Aeronautics and Space Administration

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count and file size are unknown, which may limit suitability assessment

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the Mars Express spacecraft's MARSIS Active Ionospheric Sounder instrument

Time Range

Covers the Mars Express seventh extended mission

Freshness

Last updated 2026-03-13 11:04:36.034603; freshness should be verified

Geography

Mars