CDAAC: GPS Radio Occultation Data from CHAMP, SAC-C and GPS/MET Satellites

Satellite data products processed by the UCAR COSMIC Data Analysis and Archive Center (CDAAC) using CDAAC 2.0 software. The dataset includes products such as Zenith Troposphere Comparisons, Monthly Statistics, and Ionosonde comparisons. Data access is free but requires submitting a data agreement.

Use Cases

• Analyze atmospheric profiles based on GPS radio occultation data.
• Compare tropospheric conditions using the Zenith Troposphere Comparisons product.
• Study ionospheric variability using the Ionosonde comparisons product.
• Monitor satellite data quality and availability using the Occultation Failure Percentages and File Inventories.

Strengths

• Data is processed using a specific, named software version (CDAAC 2.0).
• Includes multiple derived data products like Monthly Statistics and failure percentages.
• Data access is free, lowering the barrier to entry for research.

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.
• Last update date is unknown; freshness unverified.

Provenance

Source

UCAR COSMIC Data Analysis and Archive Center (CDAAC).

Collection Method

Satellite remote sensing via GPS radio occultation from CHAMP, SAC-C, and GPS/MET missions.

Time Range

Temporal coverage is not specified in the provided input.

Freshness

Last update date is unknown; freshness unverified.

Geography

Spatial coverage is not specified in the provided input.