OMPIXCORZ: Aura OMI Zoom-in Ground Pixel Corner Locations

OMPIXCORZ files contain ground locations of OMI pixel corners for the day lit portion of an orbit, approximately 53 minutes of data per file. This Level-2 product is stored in HDF-EOS5 format with an average file size of about 8 Mbytes, providing the geospatial footprint for each sensor observation. Its primary purpose is to enable visualization, area-based emission calculations, cross-platform pixel mapping, and validation studies for atmospheric data.

Use Cases

• Visualizing derived OMI data products based on precise pixel corner coordinates.
• Calculating trace gas emissions per area using the provided ground pixel area.
• Developing cross-platform pixel mapping applications between OMI and other sensors like MODIS.
• Aiding validation studies by accurately locating the ground footprint of each measurement.

Strengths

• Data is produced by NASA GES DISC with a named algorithm lead (Dr. Thomas Kurosu), indicating authoritative provenance.
• Files provide a specific, needed geospatial product (pixel corners) not typically included in standard Level-2 data.
• Cross-platform presence on NASA EarthData and Data.gov signals recognized importance and accessibility.

Limitations

• Column names and detailed schema are unknown across all sources, limiting precise understanding of data structure.
• Metadata for size, row count, and author is incomplete or conflicting ('None' vs 'unknown' across entries).
• Temporal coverage is described only as 'approximately one day per month', which is imprecise for time-series analysis.

Provenance

Source

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

Collection Method

Collected by the Aura Ozone Monitoring Instrument (OMI) in zoom-in scanning mode.

Time Range

Approximately one day of data per month (specific dates not provided).

Freshness

2026-04-09 23:27:42.429340

Geography

Global coverage from satellite orbits.