Imaging · collection · 2026
OMI/Aura Cloud Pressure and Fraction (O2-O2 Absorption) 1-Orbit L2 Swath 13x24km V004 (OMCLDO2)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/aura/omi/data2407
Description
The Level-2 Aura Ozone Monitoring Instrument (OMI) Cloud Pressure and Fraction (O2-O2 Absorption) Product (OMCLDO2) collection version 4 is now available from NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for public access.The data was re-processed in December 2022 using collection 4 Level 1b data and the OMAERO processor version 4.0.0. Since then, this version is also being produced in the forward stream.
This version of the product was publicly released in March 2026. There are two Level-2 Aura OMI cloud products: OMCLDO2 and OMCLDRR. The OMCLDO2 product uses the O2-O2 absorption band at 477 nm method using the DOAS technique, whereas the OMCLDRR product uses the Rotational Raman Scattering method.
Read the rest (3 more)
This product contains cloud pressure, cloud fraction, slant column O2-O2, ozone, ring coefficients, uncertainties in derived parameters, terrain and geolocation information, solar and satellite viewing angles, and quality flags. The lead scientist for this product is Dr. Pepijn Veefkind.
The OMCLDO2 files are stored in NetCDF 4 format. Each file contains data from the day lit portion of an orbit (~53 minutes). There are approximately 14 orbits per day.
The maximum file size for the OMCLDO2 data product is about 12 Mbytes.
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/OMCLDO2_004.html ↗
Access the dataset landing page from the GES DISC website.
landing page · download · from NASA CMR, data nasa gov
- Access the data via the OPeNDAP protocol. cmr.earthdata.nasa.gov/virtual-directory/collections/C3454342631-GES_DISC ↗
metadata API · download · from NASA CMR
- User Manual docserver.gesdisc.eosdis.nasa.gov/public/project/OMI/AURA-OMI-KNMI-L2-0108-MA-omaero_product_use… ↗
documentation · download · from NASA CMR, data nasa gov
- OMCLDO2 Algorithm Theoretical Basis Documents docserver.gesdisc.eosdis.nasa.gov/public/project/OMI/AURA-OMI-KNMI-L2-0100-SD-omaero_algorithm_t… ↗
documentation · download · from NASA CMR, data nasa gov
- OMI Data User's Guide docserver.gesdisc.eosdis.nasa.gov/public/project/OMI/README.OMI_DUG.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/Images/OMCLDO2_004.png ↗
download · preview image · from data nasa gov, NASA CMR
- Resource aura.gesdisc.eosdis.nasa.gov/data/Aura_OMI_Level2/OMCLDO2.004 ↗
download · from data nasa gov
- Resource search.earthdata.nasa.gov/search?q=OMCLDO2_004 ↗
download · from data nasa gov
- Resource aura.gesdisc.eosdis.nasa.gov/opendap/Aura_OMI_Level2/OMCLDO2.004/contents.html ↗
download · from data nasa gov
- search.earthdata.nasa.gov /search/granules?p=C3454342631-GES_DISC ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C3454342631-GES_DISC.iso19115 ↗
download · from data nasa gov
- Resource projects.knmi.nl/omi/research/documents ↗
download · from data nasa gov
- Resource knmiprojects.nl/projects/ozone-monitoring-instrument ↗
download · project · from data nasa gov, NASA CMR
- Resource aura.gsfc.nasa.gov ↗
download · project · from data nasa gov, NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/omi-aura-cloud-pressure-and-fraction-o2-o2-absorption-… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/aura/omi/data2407 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3454342631-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=607980bd-8153-4409-b66b-1b06258af… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3454342631-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Cloud Fraction · Cloud Top Pressure · Earth Observing System, Aura · Ozone Monitoring Instrument
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 18 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3454342631-GES_DISC | 10 d ago | JSON v1 |
| NASA Data Portal | 607980bd-8153-4409-b66b-1b06258af5a1 | 7 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].local:field:astronomy | 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[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-properties/cloud-fraction | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-properties/cloud-top-pressure | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:aura | 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 |