OMTO3_CPR_V003: CloudSat-Collocated Ozone Column Swath

OMI/Aura satellite data provides a 200-km-wide swath of total ozone column measurements, specifically collocated with the CloudSat track for the A-Train mission. This Level 2 subset includes ancillary parameters, terrain information, solar and satellite viewing angles, and quality flags. Its cross-platform presence on NASA EarthData and Data.gov signals its established use for multi-satellite atmospheric research.

Use Cases

• Validating ozone column models using collocated CloudSat and OMI measurements.
• Analyzing spatial ozone gradients based on the 200-km cross-track swath and geolocation data.
• Studying aerosol-ozone interactions using derived parameters and quality flags.
• Correlating terrain features with atmospheric composition using included ancillary data.

Strengths

• Data is specifically processed for collocation, selecting OMI measurements within +/-100 km of the CloudSat track.
• Contains multiple derived parameters and quality flags, suggesting detailed annotation.
• Available on multiple authoritative platforms (NASA EarthData, Data.gov), indicating reliability and ongoing curation.

Limitations

• Critical metadata is missing or conflicting: column names, row counts, and file sizes are unknown across all sources.
• License is ambiguously listed as 'other-license-specified' without clear terms.
• Update dates conflict between sources (2018 vs. 2026), creating uncertainty about data freshness.

Provenance

Source

GES_DISC (Goddard Earth Sciences Data and Information Services Center)

Collection Method

Subset created from the original OMTO3 product by selecting OMI data collocated with the CloudSat satellite track.

Time Range

null

Freshness

Last updated dates conflict: one source lists 2026-04-09, another lists 2018-03-02.

Geography

Global, following the CloudSat satellite track with a 200-km-wide swath.