OMPS-NPP L2 NM: Satellite-Derived Global Ozone Measurements

OMPS-NPP L2 NM Ozone (O3) Total Column swath orbital product provides total ozone measurements from the Ozone Mapping and Profiling Suite Nadir-Mapper instrument on the Suomi-NPP satellite. It derives total column ozone from normalized radiances using specific wavelength pairs and also contains measurements of UV aerosol index and reflectivity at 331 nm. Each granule covers the daylight portion of an orbit, providing global spatial coverage with a swath width of about 2800 km.

Use Cases

• Monitoring global stratospheric ozone levels based on total column ozone measurements.
• Studying atmospheric aerosol distribution using the included UV aerosol index.
• Analyzing surface reflectivity properties from the 331 nm reflectivity data.
• Tracking daily changes in atmospheric composition via the approximately 14.5 orbits per day.
• Validating atmospheric chemistry models with spatially detailed, satellite-derived data.

Strengths

• Provides global spatial coverage from -90 to 90 degrees latitude.
• Delivers high temporal resolution with about 14.5 orbits of data per day.
• Contains multiple derived atmospheric measurements, including ozone, UV aerosol index, and reflectivity.
• Data is structured in a standard scientific format (HDF5).

Limitations

• Column names and a complete data dictionary are not provided in the available metadata.
• The exact row count, file size, and temporal coverage are unspecified.
• License information is listed as 'other-license-specified' without explicit details.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite remote sensing via the OMPS Nadir-Mapper instrument on the Suomi-NPP satellite.

Freshness

Last updated date reported as 2026-04-09 on Data.gov.

Geography

Global (-90 to 90 degrees latitude).