GNSS Tropospheric Delay Estimates with 5-Minute Resolution

NASA's MEaSUREs SESES project provides long-term, calibrated tropospheric delay time series derived from Global Navigation Satellite System (GNSS) data. These products offer 5-minute resolution data from geodetic stations, supporting research into atmospheric water vapor and solid earth deformation. The dataset is generated and validated by the Scripps Institution of Oceanography and NASA's Jet Propulsion Laboratory.

Use Cases

• Estimating total near-surface water content over the continental U.S. from GNSS-derived tropospheric delay.
• Analyzing transient deformation in tectonically active areas like Cascadia for Episodic Tremor and Slip (ETS) events.
• Calibrating and validating other Earth science data records using multi-decade, high-rate GNSS time series.
• Studying tropospheric delay variations for climate and weather model assimilation.

Strengths

• Data is calibrated and validated by authoritative institutions (Scripps Institution of Oceanography, NASA JPL).
• Provides high temporal resolution (5-minute) time series for detailed analysis.
• Covers a multi-decade time range, enabling long-term trend studies.
• Cross-platform presence on NASA Earthdata and Data.gov signals its importance and curation.

Limitations

• Specific row counts, file sizes, and a complete column schema are not provided by any source.
• Sources conflict on license details, with one specifying 'other-license-specified' and another listing 'None'.

Provenance

Source

Scripps Institution of Oceanography (SIO) and NASA's Jet Propulsion Laboratory (JPL)

Collection Method

Derived from continuous GNSS time series via Precise Point Positioning (PPP) processing.

Time Range

Multi-decade

Freshness

2026-03-13 05:41:59.758881

Geography

Continental U.S. and global geodetic stations, with specific focus on Cascadia.