Measurements and Applications
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. Currently not collecting data on Aqua.
Full Name
High Resolution Dynamics Limb Sounder
Status
No longer operational
Instrument Agencies
Maturity
Instrument Type
Atmospheric chemistry 
Geometry
Limb-scanning
Instrument Technology
Limb-scanning IR spectrometer
Sampling
Sounding
Data Access
Open Access
Data Format
HDF
Resolution
Vertical: 1 km, Horizontal: 10 km
Accuracy
Trace gas: 10%, Temperature: 1 K, Ozone: 10%
Waveband
TIR: 6.12 - 17.76 µm (21 channels)
| TIR (~6.0 µm - ~15.0 µm) |
| FIR (~15.0 µm - ~0.1 cm) |
Aura - Aura (formerly EOS Chemistry) (2004 - 2025) |
| Category | Parameter |
| Aerosols | Aerosol Extinction / Backscatter (column/profile)  |
| Aerosol optical depth (column/profile) |
| Aerosol absorption optical depth (column/profile) |
| Atmospheric Humidity Fields | Atmospheric specific humidity (HT, LS, HS&M) |
| Atmospheric Temperature Fields | Atmospheric temperature (HT, LS, HS&M) |
| Cloud type, amount and cloud top temperature | Cloud top height |
| Ozone | O3 Mole Fraction |
| Trace gases (excluding ozone) | CH4 Mole Fraction |
| CFC-11 (HT, LS, HS&M) |
| CFC-12 (HT, LS, HS&M) |
| NO2 Mole Fraction |
| N2O (HT, LS, HS&M) |
| HNO3 (HT, LS, HS&M) |
| ClONO2 (LS, HS&M) |
| N2O5 (HT, LS, HS&M) |