OMNO2G: Daily Global Gridded Nitrogen Dioxide Satellite Observations

Daily global satellite observations of total and tropospheric nitrogen dioxide (NO2) columns are provided at a 0.25x0.25 degree grid resolution. The data is derived from the Ozone Monitoring Instrument (OMI) on NASA's Aura satellite, storing pixel-level data binned into daily grids without averaging. It serves as an indicator for atmospheric chemistry research and monitoring of air pollution sources like combustion and lightning.

Use Cases

• Tracking daily global NO2 pollution levels based on satellite-derived column measurements.
• Studying the role of NO2 in stratospheric and tropospheric ozone chemistry.
• Identifying and monitoring regional sources of combustion-related air pollution.
• Analyzing long-term trends in atmospheric nitrogen compounds from the time-series data.

Strengths

• Provides global spatial coverage at a 0.25x0.25 degree grid resolution.
• Contains daily temporal resolution for tracking short-term variations.
• Includes both total and tropospheric NO2 columns, covering multiple atmospheric layers.
• Data is sourced from the NASA OMI/Aura instrument, a recognized scientific mission.

Limitations

• Specific column names and a complete data schema are not provided in the available metadata.
• One source lists a last updated date in the future (2026-04-09), indicating potential metadata freshness issues.
• The average file size is 115 MB, which may present storage and processing challenges for long-term analyses.

Provenance

Source

National Aeronautics and Space Administration (NASA), OMI/Aura satellite.

Collection Method

Satellite remote sensing; pixel-level data from the OMNO2 product binned into daily global grids.

Time Range

Daily coverage (specific start and end dates not provided).

Freshness

2026-04-09 23:28:39.147736

Geography

Global