GNSS Ionosphere Products: Predicted and Rapid TEC Grids

Global ionosphere Total Electron Content (TEC) grids are derived from Global Navigation Satellite System (GNSS) data. The dataset includes both predicted and rapid daily products, generated by International GNSS Service (IGS) analysis centers and combined by the IGS ionosphere analysis coordinator. These products are hosted by NASA's Crustal Dynamics Data Information System (CDDIS).

Use Cases

• Correcting GNSS signal delays for improved positioning accuracy based on ionospheric TEC data.
• Monitoring global space weather conditions using daily ionosphere TEC grids.
• Validating ionospheric models with official IGS combined products.
• Studying ionospheric dynamics and irregularities for scientific research.

Strengths

• Data is an official combined product from the International GNSS Service (IGS), indicating a standardized, multi-source origin.
• Cross-platform presence on NASA and U.S. government portals suggests recognized importance and reliability.

Limitations

• Column names and specific data structure are not described in any source, limiting understanding of the internal format.
• Metadata completeness is low; size, row counts, and author information are largely unknown.
• The listed update date of 2026-04-10 is in the future, indicating a potential metadata error or placeholder value.

Provenance

Source

International GNSS Service (IGS) analysis centers, combined by the IGS ionosphere analysis coordinator.

Collection Method

Derived from analysis of Global Navigation Satellite System (GNSS) data.

Time Range

Daily

Freshness

2026-04-10 02:46:08.536600

Geography

Global