The Peroxy Radical Chemical Ionization Mass Spectrometer (PerCIMS) is an in situ airborne spectrometer operated by NCAR. It measures peroxy radicals (HO2+RO2) by converting hydroperoxy (HO2) and organic peroxy (RO2) into sulfuric acid (H2SO4), followed by chemical ionization to produce bisulfate ions. Mass spectrometric detection then determines the concentrations of HO2 and HO2+RO2 in the troposphere. PerCIMS typically provides 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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