TIRS (PREFIRE) Instrument

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.

Instrument Summary

Full Name
Thermal Infrared Spectrometer
Status
Operational
Instrument Agencies
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

Performance Summary

Resolution
10 - 15 km (sampling)
[Best Resolution: 10m]
Swath
Nadir Pushbroom, perpendicular to orbit track, 8 scenes with gaps
[Max Swath: 300 km]
Accuracy
Measurement noise less than 0.33 K for a 300 K unit emissivity scene, in each channel between 6 and 11 microns, and scene measurement noise less than 1.1 K for a 300 K unit emissivity scene, in each channel between 12 and 24 microns
Waveband
4 - 53 µm, 0.86 µm sampling
FIR (~15.0 µm - ~0.1 cm)

Instrument Missions

PREFIRE - Polar Radiant Energy in the Far InfraRed Experiment (2024 - 2025)

Instrument Measurements