THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - TIRS (PREFIRE) -
Full Name Thermal Infrared Spectrometer Status Being developed
Instrument Agencies NASA Maturity
Instrument Type Hyperspectral imagers Geometry Nadir-viewing
Instrument Technology High-resolution nadir-scanning IR spectrometer Sampling Imaging
Data Access Open Access Data Format NetCDF-4
Measurements and Applications Pushbroom spectroradiometric imagers in highly inclined orbits to provide spectral fluxes, column-water vapor, surface emissivity and broadband radiances over majority of thermal wavelengths.
Resolution Summary 10-15 km
[Best Resolution: 10m]
Swath Summary Nadir Pushbroom, perpendicular to orbit track, 8 scenes with gaps
[Max Swath: 300 km]
Accuracy Summary NEDT (300 K) 5-15 mm: 1.5 K/channel > 15 mm: 1.5 K aggregate
Waveband Summary 5 - 54 µm, 0.86 µm sampling
FIR (~15.0 µm - ~0.1 cm)
Instrument Measurements
Measurements Overview
CategoryParameter
Radiation budgetUpward long-wave irradiance at TOA
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Earth Radiation Budget click here click here search ECV Inventory records
Instrument Missions
PREFIRE - Polar Radiant Energy in the Far InfraRed Experiment (2021 - 2023)
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