HAQAST Sentinel-5P TROPOMI Nitrogen Dioxide (NO2) CONUS Seasonal Level 3 0.01 x 0.01 Degre

HAQAST Sentinel-5P TROPOMI Nitrogen Dioxide (NO2) CONUS Seasonal Level 3 Data provides seasonal averages of tropospheric NO2 vertical column density across the Continental United States. The dataset was developed by the George Washington University Air, Climate and Health Laboratory for NASA's HAQAST team, using version 2.4 TROPOMI files from the European Space Agency. The record began in the June-August 2018 season and continues to the present.

Use Cases

• Trend analysis of air pollution based on seasonal averages from 2018 to present.
• Mapping spatial patterns of NO2 concentrations across the Continental U.S. based on the 0.01˚ x 0.01˚ gridded data.
• Correlating NO2 levels with anthropogenic emissions in urban areas based on the description of NO2 as a pollutant from fossil fuel combustion.
• Studying precursors for ozone and fine particulates based on the description of NO2's role in atmospheric chemistry.

Strengths

• Data is derived from a consistent algorithm (ESA version 2.4), which is suitable for trend analysis.
• Provides a high spatial resolution of 0.01˚ x 0.01˚ (~1 km²) for detailed mapping.
• Covers a continuous time range from June-August 2018 to the present.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analytical needs.

Provenance

Source

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

Collection Method

Level 3 seasonal averages derived from Level 2 TROPOMI satellite instrument data using the ESA version 2.4 algorithm.

Time Range

From June-August 2018 season to present.

Freshness

Last updated 2026-03 13 01:56:11.175419; freshness should be verified.

Geography

Continental United States.