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Description

ML2DGG is the EOS Aura Microwave Limb Sounder (MLS) product containing geophysical diagnostic quantities pertaining directly to the standard geophysical data products, generally on a similar (or identical) grid, and at different spectral ranges. The data version is 4.2. Data coverage is from August 8, 2004 to current. 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). Vertical resolution varies between species and typically ranges from 3 - 6 km. Users of the ML2DGG data product should read the EOS MLS Level 2 Version 4 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 contain swaths objects for each diagnostics measurement. Each swath has a set of data and geolocation fields, swath attributes, and metadata.

Product Summary

Platforms
Aura
Instruments
MLS
Spatial Extent

N: 82 S: -82 E: 180 W: -180

Geographic Region
GLOBAL ,
MESOSPHERE ,
STRATOSPHERE ,
THERMOSPHERE ,
TROPOSPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2004-08-02 to Present
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C1251101324-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7174
Processing Level
2
Published
Updated
Science Keywords
Atmospheric Carbon Monoxide ,
Hydrogen Cyanide ,
Methyl Cyanide ,
Bromine Monoxide ,
Chlorine Monoxide ,
Hydrogen Chloride ,
Hypochlorous Acid ,
Methanol ,
Methyl Chloride ,
Hydroperoxy ,
Hydroxyl ,
Atmospheric Nitric Acid ,
Nitrous Oxide ,
Atmospheric Ozone ,
Sulfur Dioxide ,
Atmospheric Temperature ,
Humidity ,
Water Vapor Mixing Ratio Profiles ,
Cloud Liquid Water/Ice ,
Microwave Radiance

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Livesey, N., & Read, W. (2015). MLS/Aura L2 Diagnostics, Geophysical Parameter Grid - Version 4 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/MLS/DATA2006 Date Accessed: 2025-12-16

Documents

USER'S GUIDE

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

PUBLICATIONS