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MLS/Aura Near-Real-Time L2 Ozone (O3) Mixing Ratio V003 ML2O3_NRT at GES DISC

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Abstract: ML2O3_NRT is the EOS Aura Microwave Limb Sounder (MLS) Near-Real-Time (NRT) product for ozone (O3). This product contains daily O3 profiles taken from the 240 GHz band. The most recent 7 days of data are available. Spatial coverage is near-global (-82 deg. to +82 deg. latitude), with each profile spaced 1.5 deg. or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful ... View entire text
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Description: Land Atmosphere Near real-time Capabiltiy for EOS (LANCE) home page
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Geographic Coverage
Spatial coordinates   
  N: 82.0   S: -82.0   E: 180.0   W: -180.0
Min Altitude: 216 HPA Max Altitude: 0.0215 HPA

Data Set Citation
Dataset Originator/Creator: EOS MLS Science Team
Dataset Title: MLS/Aura Near-Real-Time L2 Ozone (O3) Mixing Ratio
Dataset Series Name: ML2O3
Dataset Release Date: 2011-01-19
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: NASA Goddard Earth Science Data and Information Services Center
Version: 003
Data Presentation Form: Digital Science Data
Online Resource:
Temporal Coverage
Start Date: 2016-01-08
Stop Date: 2016-01-15
Data Resolution
Latitude Resolution: 300 km at limb tagent point (along-track)
Longitude Resolution: 3 km at limb tagent point (cross-track)
Horizontal Resolution Range: 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
Vertical Resolution: ~3 km
Temporal Resolution: Twice per day; Day and Night; Orbital repeat cycle 16 days
Quality The MLS NRT data are not as accurate as the retrievals that constitute the standard MLS products, but nevertheless the results are of scientific use and track the standard MLS products with reasonable fidelity. Zonal mean differences between the NRT and standard product v3.3 results are typically within 5 to 10% for pressures between 68 and 0.2 hPa. Comparisons between the two sets of stratospheric retrievals over many days reveal significant differences mostly for pressures of 100 hPa and larger.
Access Constraints You must register using the EOSDIS User Registration System in order to access LANCE NRT MLS data. You can register at
Data Set Progress
Data Center
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Data Center URL:

Data Center Personnel
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Distribution Media: Online (FTP)
Distribution Size: 0.2MB
Distribution Format: HDF-EOS5 (Swath)
Fees: None
Email: livesey at
Contact Address:
Mail Stop 183-701, Jet Propulsion Laboratory, 4800 Oak Grove Drive
City: Pasadena
Province or State: CA
Postal Code: 91109-8099
Country: USA
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2012-07-18
Last DIF Revision Date: 2016-01-20
Future DIF Review Date: 2016-06-01

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