Annual sulfur dioxide emissions estimates for large point sources worldwide combine data from three satellite instruments: OMI, OMPS, and TROPOMI. The catalogue provides site coordinates, source type, country, annual emissions, uncertainties, and pixel counts for each instrument and a weighted average. The data are produced by the GES DISC organization as part of a Multi-Decadal SO2 Climatology project.
Use Cases
- Analyze trends in annual SO2 emissions per source type and country using the annual_so2_emissions and country columns.
- Compare emission uncertainty estimates across satellite instruments using the annual_emission_uncertainties column.
- Map global point source locations and their emission magnitudes using the site_coordinates and annual_so2_emissions fields.
- Evaluate satellite data density for each source using the number_of_satellite_pixels column.
- Calculate weighted average emissions across instruments for consolidated source analysis.
Strengths
- Combines data from three satellite instruments (OMI, OMPS, TROPOMI) for cross-validation.
- Provides annual emission uncertainties for each instrument and a weighted average.
- Includes site-specific Air-Mass Factor calculations applied consistently across datasets.
Limitations
- Focuses only on large point sources, omitting diffuse or smaller emission sources.
- Annual estimates rely on prescribed SO2 lifetime assumptions in the plume model.
- Sample size and temporal coverage specifics are unknown from the description.
Provenance
- Source
- NASA's EOS Aura (OMI), NASA-NOAA Suomi NPP (OMPS), ESA/Copernicus Sentinel-5 Precursor (TROPOMI) satellite instruments.
- Collection Method
- Emissions derived from satellite slant column density data using a PCA retrieval algorithm (OMI/OMPS) and a COBRA algorithm (TROPOMI), converted to vertical column densities with site-specific AMFs, and fitted to an empirical plume model.
- Geography
- Global coverage of large SO2 point sources.