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
Measurements Overview
CategoryParameter
Atmospheric Humidity FieldsAtmospheric specific humidity (LT, HT)
Atmospheric Temperature FieldsAtmospheric temperature (LT, HT, LS)
Temperature of tropopause
Air temperature (near surface)
Cloud type, amount and cloud top temperatureCloud top height
Cloud top temperature
OzoneO3 Mole Fraction
Radiation budgetUpward long-wave irradiance at TOA
Surface temperature (land)Land surface temperature
Surface temperature (ocean)Sea surface temperature
Trace gases (excluding ozone)CO2 Mole Fraction
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Carbon Dioxide, Methane and other Greenhouse gases click here click here search ECV Inventory records
Cloud Properties click here click here search ECV Inventory records
Earth Radiation Budget click here click here search ECV Inventory records
Land Surface Temperature click here click here search ECV Inventory records
Ozone click here click here search ECV Inventory records
Sea Surface Temperature click here click here search ECV Inventory records
Temperature (surface) 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
FY-3A - FY-3A Polar-orbiting Meteorological Satellite (2008 - 2018)
FY-3B - FY-3B Polar-orbiting Meteorological Satellite (2010 - 2020)
FY-3C - FY-3C Polar-orbiting Meteorological Satellite (2013 - 2020)
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