Imaging · collection · 2026
Multi-Satellite Air Quality Sulfur Dioxide (SO2) Database Long-Term L4 Global V2 (MSAQSO2L4)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/measures/so2/data406
These data are a part of Multi-Decadal Sulfur Dioxide (SO2) Climatology from Satellite Instruments (MEaSUREs-12-0022 project).
Description
Version 2 of the global catalogue of emissions from large SO2 point sources combines data from the Ozone Monitoring Instrument (OMI) on NASA's EOS Aura spacecraft, the Ozone Mapping and Profiler Suite (OMPS) on the NASA-NOAA Suomi National Polar-orbiting Partnership (SNPP), and the TROPOspheric Monitoring Instrument (TROPOMI) on the ESA/Copernicus Sentinel-5 Precursor (S-5P) spacecraft.
The catalogue MSAQSO2L4 file contains the site coordinates, source type, country, source name, annual SO2 emissions, annual emission uncertainties, and the number of satellite pixels in the fitting area for three satellite instruments as well as for their weighted average. The emission estimates are based on operational version 2 OMI and OMPS Principal Component Analysis (PCA) retrieval algorithm SO2 slant column density (SCD) data (Li et al., 2020) as well as on new TROPOMI Covariance-Based Retrieval Algorithm (COBRA) SCD data (Theys et al., 2021).
Read the rest (2 more)
A single time-independent site-specific Air-Mass Factor (AMF) value for each site was calculated (McLinden et al., 2014) and applied consistently to each satellite SCD dataset to derive SO2 vertical column densities (VCDs=SCDs/AMFs). The emission estimate method is based on a fit of satellite VCDs to an empirical plume model developed to describe the SO2 spatial distribution near emission point sources. The plume model assumes that the SO2 concentrations emitted from a point source decline exponentially with distance and that they are affected by turbulent diffusion that can be described by a two-dimensional (2D) exponentially modified Gaussian function.
The total SO2 mass is derived from the fit and the annual emission rate is calculated as the ratio between the total mass and the prescribed SO2 lifetime.
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/MSAQSO2L4_2.html ↗
Access the dataset landing page from the GES DISC website.
landing page · download · from NASA CMR, data nasa gov
- Project summary goals and description earthdata.nasa.gov/about/competitive-programs/measures/multi-decadal-sulfur-dioxi… ↗
documentation · download · from NASA CMR, data nasa gov
- README Document. docserver.gesdisc.eosdis.nasa.gov/public/project/MEaSUREs/Krotkov/README.MSAQSO2L4.V2.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C2503251631-GES_DISC.iso19115 ↗
download · from data nasa gov
- Access the data via HTTP. cmr.earthdata.nasa.gov/virtual-directory/collections/C2503251631-GES_DISC/temporal ↗
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C2503251631-GES_DISC&q=MSAQSO2L4 ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- Resource measures.gesdisc.eosdis.nasa.gov/opendap/SO2/MSAQSO2L4.2 ↗
download · from data nasa gov
- Resource so2.gsfc.nasa.gov/measures.html ↗
download · project · from data nasa gov, NASA CMR
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/MEaSUREs/Krotkov/MSAQSO2L4.PNG ↗
download · preview image · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/multi-satellite-air-quality-sulfur-dioxide-so2-databas… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/measures/so2/data406 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 4
- CKAN API data.nasa.gov/api/3/action/package_show?id=1f8a790c-acc0-4fd7-8087-8728a3ef0… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2503251631-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C2503251631-GES_DISC ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2503251631-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Earth Observing System, Aura · National Oceanic & Atmospheric Administration-20 · Ozone Mapping and Profiler Suite · Ozone Monitoring Instrument · Sentinel-5 Precursor · Sulfate Particles · Sulfur Dioxide · Sulfur Oxides · Suomi-NPP · TROPOspheric Monitoring Instrument · Volcanic Eruptions
- From keywords
- Astronomy & Astrophysics · Chemistry · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Atmospheric sciences 72%
Provenance · 2 source records, 27 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2503251631-GES_DISC | 7 d ago | JSON v1 |
| NASA Data Portal | 1f8a790c-acc0-4fd7-8087-8728a3ef070c | 4 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3701 | enrichment · NASA CMR | taxonomy-embedding@1.0.0 | title+keywords+description (72%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:omi | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:omps | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:tropomi | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/aerosols/sulfate-particles | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/air-quality/sulfur-oxides | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/sulfur-compounds/sulfur-dioxide | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/natural-hazards/volcanic-eruptions | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:aura | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:noaa-20 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:sentinel-5p | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:suomi-npp | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |