The Peroxy Radical Chemical Ionization Mass Spectrometer (PerCIMS) is an in situ airborne spectrometer operated by NCAR. It measures peroxy radicals (HO2+RO2) through the chemical conversion of hydroperoxy (HO2) and organic peroxy (RO2) into sulfuric acid (H2SO4), followed by chemical ionization to produce bisulfate ions. The mass spectrometry detection then determines the concentrations of HO2 and HO2+RO2 in the troposphere. PerCIMS typically provides data in 1-minute averages, with HO2+RO2 values collected during the first half (0-6 s) of the minute and HO2 during the second half (30-36 s).
Instrument Details
- Spectrometer/Radiometer
- Earth Science > Atmosphere > Atmospheric Chemistry > Hydrogen Compounds > Hydroperoxy
- Troposphere
- 1 min
- Point
- N/A
- https://doi.org/10.1029/2003JD003644
Christopher Cantrell
Christopher Cantrell
NCAR
Currently unavailable
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