CEOS EO HANDBOOK – INSTRUMENT SUMMARY
- TES
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Full Name
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Tropospheric Emission Spectrometer
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Status
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No longer operational
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Instrument Agencies
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NASA
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Maturity
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Instrument Type
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Atmospheric chemistry 
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Geometry
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Nadir-viewing
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Instrument Technology
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High-resolution nadir-scanning IR spectrometer
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Sampling
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Imaging
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Data Access
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Open Access
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Data Format
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HDF(Level1) , HDF-EOS (Level-2 and 3)
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Measurements and Applications
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3D profiles on a global scale of all infra-red active species from surface to lower stratosphere. Measures greenhouse gas concentrations, tropospheric ozone, acid rain precursors, gas exchange leading to stratospheric ozone depletion.
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Resolution Summary
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In limb mode: 2.3 km vertical resolution. In down-looking mode: 50 x 5 km (global), 5 x 0.5 km (local)
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Swath Summary
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Limb mode: global: 50 x 180 km, local: 5 x 18 km
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Accuracy Summary
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Ozone: 20 ppb, Trace gases: 3 - 500 ppb
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Waveband Summary
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SWIR-TIR: 3.2 - 15.4 µm
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| 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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| Category | Parameter |
| Atmospheric Humidity Fields | Atmospheric specific humidity (LT, HT, LS)   |
| Atmospheric Temperature Fields | Atmospheric temperature (LT, HT, LS) |
| Ozone | O3 Mole Fraction |
| Surface temperature (land) | Land surface temperature |
| Trace gases (excluding ozone) | CH4 Mole Fraction |
| CO2 Mole Fraction |
| CO Mole Fraction |
| N2O (LT, HT, LS) |
| HNO3 (LT, HT, LS) |
| HDO (LT, HT, HS&M) |
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Instrument Missions
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