Imaging · collection · 2026
MLS/Aura Level 2 Hydroxyl (OH) Mixing Ratio V006 (ML2OH)
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/aura/mls/data2617
ML2OH is the EOS Aura Microwave Limb Sounder (MLS) standard product for hydroxyl derived from radiances measured by the THz radiometer.
Description
The data version is 6.0. Data coverage is continuous from August 8, 2004 to December 12, 2009 when the THz radiometer was placed in standby mode.
After this date OH data were collected for about 30 days in August/September of 2011, 2012, 2013 and 2014. Spatial coverage is near-global (-82 degrees to +82 degrees latitude), with each profile spaced 1.5 degrees or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range is from 31.6 to 0.00316 hPa, and the vertical resolution is about 3.
Read the rest (1 more)
Users of the ML2OH data product should read section 3.20 of the EOS MLS Level 2 Version 6 Quality Document for more information. The data are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5), which is based on the version 5 Hierarchical Data Format, or HDF-5. Each file contains two swath objects (profile and column data), each with a set of data and geolocation fields, swath attributes, and metadata.
Links
Get the data
- Resource disc.gsfc.nasa.gov/datacollection/ML2OH_006.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/C3127198369-GES_DISC ↗
metadata API · download · from NASA CMR
- Resource mls.jpl.nasa.gov/eos-aura-mls/data.php ↗
Users are encouraged to register with the MLS science team to obtain updates and information about this data product.
documentation · download · from NASA CMR, data nasa gov
- Data Quality and Description Document mls.jpl.nasa.gov/data/v6-0_data_quality_document.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- List of publications. mls.jpl.nasa.gov/publications ↗
documentation · download · from NASA CMR, data nasa gov
- PDF docserver.gesdisc.eosdis.nasa.gov/repository/Mission/MLS/3.3_Product_Documentation/3.3.4_Product… ↗
EOS MLS Retrieval Process Algorithm Theoretical Basis
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C3127198369-GES_DISC.iso19115 ↗
download · from data nasa gov
- search.earthdata.nasa.gov /search/granules?p=C3127198369-GES_DISC ↗
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
download · from NASA CMR
- Resource mls.jpl.nasa.gov ↗
download · project · from data nasa gov, NASA CMR
- PNG docserver.gesdisc.eosdis.nasa.gov/public/project/Images/ML2OH_006.png ↗
download · preview image · from data nasa gov, NASA CMR
- Resource acdisc.gesdisc.eosdis.nasa.gov/data/Aura_MLS_Level2/ML2OH.006 ↗
download · from data nasa gov
- Resource acdisc.gesdisc.eosdis.nasa.gov/opendap/HDF-EOS5/Aura_MLS_Level2/ML2OH.006/contents.html ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/mls-aura-level-2-hydroxyl-oh-mixing-ratio-v006-ml2oh-a… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/aura/mls/data2617 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CKAN API data.nasa.gov/api/3/action/package_show?id=3c57b125-7706-4015-be17-e049331d5… ↗
metadata API · from data nasa gov
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3127198369-GES_DISC.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3127198369-GES_DISC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Earth Observing System, Aura · Hydroxyl · Microwave Limb Sounder
- From keywords
- Astronomy & Astrophysics · Chemistry · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 18 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3127198369-GES_DISC | 9 d ago | JSON v1 |
| NASA Data Portal | 3c57b125-7706-4015-be17-e049331d55b5 | 6 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: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:mls | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-chemistry/hydrogen-compounds/hydroxyl | 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 |