Global GNSS Co-Located Meteorological Data from NASA CDDIS

NASA's Crustal Dynamics Data Information System (CDDIS) provides daily meteorological data files from instruments co-located with Global Navigation Satellite System (GNSS) receivers. The dataset contains one day of meteorological observations, including temperature, pressure, and humidity, from a global permanent network of ground-based receivers, with one file per site. Data is stored in RINEX format and includes information from multiple global satellite constellations such as GPS, GLONASS, Galileo, and Beidou.

Use Cases

• Analyzing temperature and pressure variations from co-located weather stations to correct GNSS signal delays for precise positioning.
• Correlating humidity data from the global network with tropospheric zenith path delay estimates derived from GNSS observations.
• Studying long-term meteorological trends at specific receiver sites using the daily time-series of weather parameters.
• Validating regional weather models by comparing observed pressure and temperature data from the distributed ground station network.

Strengths

• Data originates from a global permanent network of ground-based receivers, ensuring wide spatial coverage.
• Daily files provide consistent temporal granularity for time-series analysis.
• Includes meteorological data co-located with multiple GNSS constellations (GPS, GLONASS, Galileo, Beidou, QZSS, IRNSS, SBASs).

Limitations

• The specific number of stations, rows of data, and temporal range are not provided in the input description.
• Data format (RINEX) is specialized and may require specific parsing tools for analysis.
• No information is provided on data completeness or potential gaps in the time series for individual stations.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS).

Collection Method

Collected from ground-based meteorological instruments co-located with GNSS receivers in a global permanent network.

Time Range

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Freshness

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Geography

Global coverage from a network of permanent ground-based receivers.