OMMYDAGEO: Aerosol Satellite Data Co-location

OMI/Aura and MODIS/Aqua Aerosol Geo-colocation Product (OMMYDAGEO) is a Level-2 orbital dataset linking MODIS/Aqua aerosol geo-coordinates with OMI indices along the orbital track. It co-locates MODIS and OMI cloud and radiance information onto the OMI pixel for analysis and validation. Data is stored in HDF-EOS5 swath files, with approximately 140 files generated per day.

Use Cases

• Matching MODIS granules with OMI orbits for cross-instrument validation based on the geo-colocation product.
• Analyzing aerosol properties using co-located MODIS and OMI cloud and radiance information.
• Performing time-series analysis of atmospheric aerosols using the 5-minute orbital swath data.

Strengths

• Provides direct co-location of data from two major satellite instruments (OMI/Aura and MODIS/Aqua).
• Generates a high temporal resolution data stream with approximately 140 swath files per day.
• Follows established conventions for OMI Level-2 data products, ensuring consistency.

Limitations

• Column names and a complete data schema are not provided in the available metadata.
• Conflicting metadata: one source lists an organization (GES_DISC) and license, while others list these as null or unknown.
• The dataset's spatial and temporal coverage is not explicitly defined.

Provenance

Source

GES DISC (Goddard Earth Sciences Data and Information Services Center)

Collection Method

Satellite remote sensing from the OMI/Aura and MODIS/Aqua instruments.

Time Range

null

Freshness

2026-04-09 23:30:22.480571

Geography

Global coverage along satellite orbital tracks.