S5P_L2__NO2____HiR: Sentinel-5P Tropospheric Nitrogen Dioxide Measurements

Sentinel-5P TROPOMI Tropospheric NO2 1-Orbit L2 data provides high-resolution global measurements of nitrogen dioxide concentrations in the troposphere. The dataset is produced by the TROPOspheric Monitoring Instrument aboard the Copernicus Sentinel-5 Precursor satellite, a joint mission of the European Space Agency and the Kingdom of the Netherlands. Retrieval is based on the DOMINO approach, using differential optical absorption spectroscopy and a model to separate stratospheric and tropospheric contributions.

Use Cases

• Monitoring urban and industrial NO2 pollution hotspots based on the ~5.5km spatial resolution.
• Analyzing long-term trends in tropospheric NO2 columns for climate and air quality studies.
• Validating and improving atmospheric chemistry transport models using the assimilated stratospheric/tropospheric separation.
• Assessing the impact of emission control policies on regional air quality over time.

Strengths

• Provides high spatial resolution measurements (~5.5 km at nadir) for detailed pollution mapping.
• Based on a sophisticated retrieval algorithm (DOMINO/DOAS) developed through the QA4ECV project.
• Cross-platform presence on NASA Earthdata and Data.gov signals its importance and reliability.

Limitations

• Critical metadata is missing: column names, row counts, and dataset size are unknown across all sources.
• The dataset has a temporal discontinuity, with a different product (S5P_L2__NO2____1) required for data before August 6, 2019.
• License is ambiguously listed as 'other-license-specified' without explicit terms.

Provenance

Source

European Space Agency (ESA) and the Kingdom of the Netherlands, processed and distributed by NASA GES DISC.

Collection Method

Satellite remote sensing via the TROPOMI hyperspectral spectrometer using the DOMINO retrieval algorithm.

Time Range

From August 6, 2019, onward (with a separate collection for earlier data).

Freshness

2026-04-09 22:05:50.113715

Geography

Global coverage from the Sentinel-5P satellite's sun-synchronous orbit.