MLS/Aura Near-Real-Time L2 Ozone (O3) Mixing Ratio V005 (ML2O3_NRT) at GES DISC

ML2O3_NRT is the EOS Aura Microwave Limb Sounder (MLS) Near-Real-Time (NRT) product for ozone (O3). This product contains O3 profiles derived from the 240 GHz region. The NRT data are typically available within 3 hours of observation and are broken into files containing about 15 minutes of data. The most recent 7 days of data are available online. 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 vertical coverage is from 261 to 0.1 hPa.

The MLS NRT algorithm uses a simplified fast forward model to meet Near Real Time data latency requirements and are therefore not as accurate as the retrievals that constitute the standard MLS products. Nevertheless the results are scientifically useful in selected regions of the Earth's atmosphere provided that the data are screened according to the recommendations in the MLS NRT User Guide and the MLS L2 Data Quality Document for Standard Products.

Data and Resources

Additional Info

Field Value
Maintainer NATHANIEL LIVESEY
Last Updated July 17, 2025, 17:32 (UTC)
Created April 1, 2025, 01:38 (UTC)
accessLevel public
bureauCode {026:00}
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citation EOS MLS Science Team. 2022-01-11. ML2O3_NRT. Version 005. MLS/Aura Near-Real-Time L2 Ozone (O3) Mixing Ratio V005. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/ML2O3_NRT_005.html. Digital Science Data.
creator EOS MLS Science Team
data-presentation-form Digital Science Data
graphic-preview-description Aura MLS logo
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/ML2O3_NRT_003.jpeg
harvest_object_id 31009f87-4a70-458b-8ccf-5ba613361c95
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2131771812-GES_DISC
issued 2021-09-21
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C2131771812-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2021-09-21
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name ML2O3_NRT
source_datajson_identifier true
source_hash 77e2b1717f9dadbf219dc35ece19bd3a4f8aa6b2d1e2f733b0f1baa9f1c7bf85
source_schema_version 1.1
spatial -180.0 -82.0 180.0 82.0
temporal 2021-09-21T00:00:00Z/2023-02-28T00:00:00Z
theme {Aura,LANCE,geospatial}