Measurements and Applications
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.
Full Name
Tropospheric Emission Spectrometer
Status
No longer operational
Instrument Agencies
Maturity
Instrument Type
Atmospheric chemistry 
Geometry
Nadir-viewing
Instrument Technology
High-resolution nadir-scanning IR spectrometer
Sampling
Imaging
Data Access
Open Access
Data Format
HDF(Level1) , HDF-EOS (Level-2 and 3)
Resolution
In limb mode: 2.3 km vertical resolution. In down-looking mode: 50 x 5 km (global), 5 x 0.5 km (local)
Swath
Limb mode: global: 50 x 180 km, local: 5 x 18 km
Accuracy
Ozone: 20 ppb, Trace gases: 3 - 500 ppb
Waveband
SWIR-TIR: 3.2 - 15.4 µm
| MWIR (~3.0 µm - ~6.0 µm) |
| TIR (~6.0 µm - ~15.0 µm) |
Aura - Aura (formerly EOS Chemistry) (2004 - 2025) |
| 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) |