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Description

ML1OA is the EOS Aura Microwave Limb Sounder (MLS) product containing the level 1 orbit attitude and tangent point geolocation data. 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), and files contain a full days worth of data (15 orbits). Users of the ML1OA data product should read the 'A Short Guide to the Use and Interpretation of v4.2x Level 1 Data' document for additional information.

The data are stored in the version 5 Hierarchical Data Format, or HDF-5. Each file contains orbital and attitude information written as HDF-5 dataset objects (n-dimensional arrays), along with file attributes and metadata.

Product Summary

Platforms
Aura
Instruments
MLS
Spatial Extent

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

Geographic Region
GLOBAL ,
MESOSPHERE ,
STRATOSPHERE ,
TROPOSPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2004-08-01 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
C1265737437-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7184
Processing Level
1
Published
Updated
Science Keywords
Attitude Characteristics ,
ORBITAL CHARACTERISTICS

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

Jarnot, R., & Perun, V. (2015). MLS/Aura L1 Orbit/Attitude and Tangent Point Geolocation Data ??? Version 4 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/MLS/DATA1001 Date Accessed: 2025-12-16

Documents

READ-ME

PUBLICATIONS