OMNO2d: Daily Global Gridded Nitrogen Dioxide Satellite Data

Daily global satellite measurements provide total and tropospheric nitrogen dioxide columns at a 0.25x0.25 degree grid resolution. The data product is derived from pixel-level observations binned and averaged, focusing on sky conditions with cloud fraction below 30 percent. Nitrogen dioxide is a key indicator of air pollution and plays a role in both tropospheric ozone production and stratospheric ozone chemistry.

Use Cases

• Monitoring regional air quality trends based on tropospheric nitrogen dioxide columns.
• Studying the impact of combustion processes and lightning on atmospheric chemistry.
• Validating atmospheric transport models using global, gridded satellite observations.
• Analyzing long-term changes in stratospheric nitrogen dioxide for ozone chemistry research.

Strengths

• Provides global coverage at a consistent 0.25x0.25 degree spatial resolution.
• Includes data filtered for cloud fraction under 30 percent to reduce atmospheric interference.
• Contains both total column and tropospheric column nitrogen dioxide measurements.

Limitations

• Key metadata such as row count, file size specifics, and exact temporal coverage are not provided across sources.
• Data is limited to daytime orbital passes, missing nocturnal observations.
• The license is ambiguously listed as 'other-license-specified' without clear terms.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite remote sensing from the OMI/Aura instrument, processed into Level-3 gridded products.

Freshness

2026-04-09 23:29:01.175758

Geography

Global