CEOS EO HANDBOOK – INSTRUMENT SUMMARY - UV Spectrometer (GACM) -
Full Name UV Spectrometer (GACM) Status No longer considered
Instrument Agencies NASA Maturity Medium Heritage
Instrument Type Atmospheric chemistry Geometry Nadir-viewing
Instrument Technology High-resolution nadir-scanning SW spectrometer Sampling Sounding
Data Access Open Access Data Format
Measurements and Applications Daytime measurements of O3, NO2, SO2, CH2O, and aerosols.
Resolution Summary
Swath Summary
Accuracy Summary
Waveband Summary 305 - 320 nm and 500 - 650 nm
UV (~0.01 µm - ~0.40 µm)
VIS (~0.40 µm - ~0.75 µm)
Instrument Measurements
Measurements Overview
CategoryParameter
AerosolsAerosol optical depth (column/profile)
OzoneO3 Mole Fraction
Trace gases (excluding ozone)NO2 Mole Fraction
SO2 Mole Fraction
HCHO Mole Fraction
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Aerosols properties click here click here search ECV Inventory records
Ozone click here click here search ECV Inventory records
Instrument Missions
GACM - Global Atmospheric Composition Mission (2030 - 2033)