THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - MLS (EOS-Aura) -
Full Name Microwave Limb Sounder (EOS-Aura) Status Operational
Instrument Agencies NASA Maturity
Instrument Type Atmospheric temperature and humidity sounders Geometry Limb-scanning
Instrument Technology Limb-scanning MW spectrometer Sampling Sounding
Data Access Open Access Data Format HDF-EOS
Measurements and Applications Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2.
Resolution Summary 3 x 300 km horizontal x 1.2 km vertical
Swath Summary Limb scan 2.5 - 62.5 km Limb to limb
[Max Swath: 62 km]
Accuracy Summary Temperature: 4 K, Ozone: 50%
Waveband Summary Microwave: 118 GHz, 190 GHz, 240 GHz, 640 GHz and 2.5 THz
MW (~1.0 cm - ~100 cm)
Instrument Measurements
Measurements Overview
CategoryParameter
Atmospheric Humidity FieldsAtmospheric specific humidity (HT, LS, HS&M)
Atmospheric Temperature FieldsAtmospheric temperature (HT, LS, HS&M)
Cloud particle properties and profileCloud ice content (at cloud top)
OzoneO3 Mole Fraction
Trace gases (excluding ozone)CO Mole Fraction
OH (column/profile)
N2O (HT, LS)
HNO3 (HT, LS)
HCl (HT, LS)
BrO (HT, LS, HS&M)
ClO (HT, LS, HS&M)
SO2 Mole Fraction
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Ozone click here click here search ECV Inventory records
Precursors (supporting the Aerosol and Ozone ECVs) click here click here search ECV Inventory records
Temperature (upper-air) click here click here search ECV Inventory records
Water Vapour (upper air) click here click here search ECV Inventory records
Instrument Missions
Aura - Aura (formerly EOS Chemistry) (2004 - 2023)
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