HAQ_TROPOMI_NO2_GLOBAL_M_L3: Global Monthly Nitrogen Dioxide Satellite Data at 0.1° Grid

Global monthly averages of tropospheric nitrogen dioxide (NO2) vertical column density derived from the Sentinel-5P TROPOMI instrument. The dataset began in January 2019 and continues to the present, providing oversampled data at a 0.1° x 0.1° spatial resolution. It was developed by the George Washington University Air, Climate and Health Laboratory as part of the NASA HAQAST team using ESA's version 2.4 algorithm.

Use Cases

• Analyzing long-term trends in global air pollution based on monthly averages.
• Mapping urban NO2 concentrations based on satellite-derived vertical column density.
• Studying the relationship between NO2 emissions and health outcomes based on its role as a respiratory pollutant and ozone precursor.
• Modeling anthropogenic emissions from fossil fuel combustion in urban areas based on tropospheric NO2 data.

Strengths

• Provides consistent global coverage from January 2019 to the present.
• Offers a high spatial resolution of 0.1° x 0.1° (~10 km²) for detailed analysis.
• Uses a consistent algorithm (ESA version 2.4) suitable for trend analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is collected once per day at approximately 13:30 local time, which may not capture diurnal variations.

Provenance

Source

National Aeronautics and Space Administration (NASA), processed by George Washington University Air, Climate and Health Laboratory.

Collection Method

Derived from Level 2 TROPOMI NO2 files from the European Space Agency (ESA), oversampled to create monthly Level 3 averages.

Time Range

January 2019 to present.

Freshness

Last updated 2026-03-13 01:44:22.349670; freshness should be verified.

Geography

Global.