CEOS EO HANDBOOK – INSTRUMENT SUMMARY
- HIRS/2
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Full Name
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High Resolution Infra-red Sounder/2
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Status
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No longer operational
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Instrument Agencies
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NOAA
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Maturity
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Instrument Type
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Atmospheric temperature and humidity sounders 
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Geometry
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Cross-track scanning
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Instrument Technology
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Narrow-band channel IR radiometer
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Sampling
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Sounding
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Data Access
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Data Format
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Measurements and Applications
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Measures atmospheric temperature, concentrations of ozone, water vapour, methane, NOx, N2O, CFCs and other minor species, aerosol concentration, location of polar stratospheric clouds and cloud tops. Filter radiometer, 20 channels (including one VIS). Evolution of HIRS flown on Nimbus-6. HIRS/2 is part of the TOVS sounding instrument suite (TIROS Operational Vertical Sounder).
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Resolution Summary
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20.3 km
[Best Resolution: 20300m]
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Swath Summary
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2240 km
[Max Swath: 2240 km]
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Accuracy Summary
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Waveband Summary
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VIS - TIR: 0.69 - 14.95 µm (20 channels)
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| 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) |
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Instrument Measurements
Measurements Overview
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Instrument Missions
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