THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - IRAS -
Full Name InfraRed Atmospheric Sounder Status Operational
Instrument Agencies NRSCC, CAST, NSMC-CMA, CNSA Maturity
Instrument Type Atmospheric temperature and humidity sounders Geometry Cross-track scanning
Instrument Technology Narrow-band channel IR radiometer Sampling Sounding
Data Access Open Access Data Format L-1 data: HDF 5.0
Measurements and Applications Atmospheric sounding for weather forecasting.
Resolution Summary 14 km
Swath Summary 952 km
Accuracy Summary 17 km
Waveband Summary VIS - TIR: 0.65 - 14.95 µm (26 channels)
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
SWIR (~1.3 µm - ~3.0 µm)
MWIR (~3.0 µm - ~6.0 µm)
TIR (~6.0 µm - ~15.0 µm)
Instrument Measurements
CategoryParameterAccuracy
Atmospheric Humidity FieldsAtmospheric specific humidity (LT, HT) 
Atmospheric Temperature FieldsAtmospheric temperature (LT, HT, LS) 
Temperature of tropopause 
Atmospheric temperature (at surface) 
Cloud type, amount and cloud top temperatureCloud top height 
Cloud top temperature 
OzoneOzone profile 
Radiation budgetUpwelling (Outgoing) long-wave radiation at TOA 
Surface temperature (land)Land surface temperature 
Surface temperature (ocean)Sea surface temperature 
Trace gases (excluding ozone)Atmospheric Chemistry - CO2 (column/profile)2 [ppm]
Instrument Missions
FY-3A - FY-3A Polar-orbiting Meteorological Satellite (2008 - 2017)
FY-3B - FY-3B Polar-orbiting Meteorological Satellite (2010 - 2017)
FY-3C - FY-3C Polar-orbiting Meteorological Satellite (2013 - 2018)
Copyright CEOS | About | Site Search Researched and written by Symbios