THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - GEMS -
Full Name Geostationary Environmental Monitoring Spectrometer Status Being developed
Instrument Agencies KARI, NIER, BATC Maturity
Instrument Type Atmospheric chemistry Geometry Nadir-viewing
Instrument Technology Medium-resolution spectro-radiometer Sampling Imaging
Data Access Open Access Data Format GEOTIF
Measurements and Applications Measurements of atmospheric chemistry, precursors of aerosols and ozone in particular, in high temporal and spatial resolution over Asia.
Resolution Summary 56km2 at Seoul
Swath Summary TBD
Accuracy Summary
Waveband Summary 0.30 µm - 0.50µm
VIS (~0.40 µm - ~0.75 µm)
Instrument Measurements
CategoryParameterAccuracy
AerosolsAerosol absorption optical depth (column/profile) 
OzoneOzone profile 
Trace gases (excluding ozone)Atmospheric Chemistry - NO2 (HT, TC) 
Atmospheric Chemistry - SO2 (HT, TC) 
Instrument Missions
GEO-KOMPSAT-2B - Geostationary Korea Multi-Purpose Satellite-2B (2019 - 2029)
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