| CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
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Measurements > Atmosphere >
Trace gases (excluding ozone) >
ClO (column/profile)
  | Measurement Definition*: ClO = Chlorine monoxide = Hypochlorite. Requested from surface to TOA (layers: LT, HT, LS, HS&M) - Physical unit: [ ppm ] - Accuracy unit: [ % ]. |
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
MLS (EOS-Aura)
Microwave Limb Sounder (EOS-Aura) | Operational
| Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2. | Limb-scanning MW spectrometer | |
SMR
Submillimetre Radiometer | Operational
| Measures global distributions of ozone and species of importance for ozone chemistry ClO, HNO3, H2O, N2O, (HO2, H2O2). Measures temperature in the height range 15 - 100 km. | Limb-scanning MW spectrometer | |
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* Description adapted from WMO.
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