THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - Microwave limb sounder (GACM) -
Full Name Microwave limb sounder (GACM) Status Proposed
Instrument Agencies NASA Maturity High Heritage - Non-Operational
Instrument Type Atmospheric chemistry Geometry Limb-scanning
Instrument Technology Limb-scanning MW spectrometer Sampling Sounding
Data Access Open Access Data Format
Measurements and Applications Limb-viewing measurements of O3, N2O, temperature, water vapour, CO, HNO3, ClO, and volcanic SO2 in the.
Resolution Summary
Swath Summary
Accuracy Summary
Waveband Summary
MW (~1.0 cm - ~100 cm)
Instrument Measurements
CategoryParameterAccuracy
AerosolsAerosol optical depth (column/profile) 
Atmospheric Humidity FieldsAtmospheric specific humidity (column/profile) 
Atmospheric Temperature FieldsAtmospheric temperature (column/profile) 
OzoneOzone profile 
Trace gases (excluding ozone)Atmospheric Chemistry - CO (column/profile) 
Atmospheric Chemistry - N2O (column/profile) 
Atmospheric Chemistry - HNO3 (column/profile) 
Atmospheric Chemistry - ClO (column/profile) 
Atmospheric Chemistry - SO2 (column/profile) 
Instrument Missions
GACM - Global Atmospheric Composition Mission (2030 - 2033)
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