GUARDIAN Near Real-Time Ionospheric TEC from GNSS Stations

Over 90 GNSS ground stations distributed around the Pacific Ring of Fire monitor four major constellations to produce near-real-time total electron content (TEC) time series. Developed at NASA's Jet Propulsion Laboratory (JPL), the GUARDIAN system provides validated 5-second sampled data for detecting ionospheric perturbations. This dataset is managed by NASA's CDDIS and is available in BIN, ISO, and HTML file formats.

Use Cases

• Analyzing TEC time series for perturbations linked to seismic activity along the Pacific Ring of Fire.
• Monitoring near-real-time ionospheric changes using data from GPS, Galileo, BDS, and GLONASS constellations.
• Validating post-processed ionospheric models against the NRT GUARDIAN time series.
• Investigating anthropogenic impacts on the upper atmosphere through TEC anomaly detection.

Strengths

• Data is validated against established post-processing methods, ensuring reliability.
• Provides near-real-time monitoring from a network of over 90 ground stations.
• Covers the seismically active Pacific Ring of Fire region for event detection.

Limitations

• Specific column names, row counts, and dataset size are not provided by any source.
• Sources conflict on license information, with one specifying 'other-license-specified' and another listing 'None'.

Provenance

Source

NASA Jet Propulsion Laboratory (JPL)

Collection Method

Collected from GNSS ground stations monitoring GPS, Galileo, BDS, and GLONASS constellations.

Freshness

2026-03-13 01:44:10.646900

Geography

Pacific Ring of Fire