CEOS EO HANDBOOK – INSTRUMENT SUMMARY
- VAS
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Full Name
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VISSR Atmospheric Sounder
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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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Earth disk 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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VISSR Atmospheric Sounder. Spin scan radiometer/atmospheric sounder. 8 detectors for 1 visible channel, 6 detectors for 3 IR channels.
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Resolution Summary
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VIS channel: 0.9 km at s.s.p.; TIR channel: 6.9 km at s.s.p.; all other channels: either 6.9 or 13.8 km.
[Best Resolution: 900m]
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Swath Summary
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Hemispheric view
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Accuracy Summary
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Waveband Summary
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Cloud imagery: VIS 0.55-0.75μm, IR 10.5-12.6 μm. Atmospheric sounding (12 channels centred on 3.94, 4.44, 4.51, 6.7, 7.2, 11.2, 12.7, 13.3, 14.0, 14.2, 14.5 and 14.7 μm).
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| VIS (~0.40 µm - ~0.75 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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