Comparison between two Aitken counters and with cloud condensation nuclei counters at the 1980 International CCN Workshop
Abstract
The Pollak and the TSI 3020 counters agreed to within about 10% at concentrations below 1000 cu cm, whereas above that concentration, substantial systematic differences were observed. When the test aerosol was monodisperse and the CCN counters were operated at supersaturations that should nucleate all the aerosol, the Pollak counter read about 6% to 20% lower than the CCN counter in the concentration range from 250/cu cm to 1800/cu cm. The TSI 3020 read about 20% lower than the CCN counter at concentrations less than 1000/cu cm, and a factor of about two higher at concentrations above 1000/cu cm.
- Publication:
-
In its The Third Intern. Cloud Condensation Nuclei Workshop p 99-107 (SEE N82-15383 06-35
- Pub Date:
- November 1981
- Bibcode:
- 1981ccn..work...99R
- Keywords:
-
- Aerosols;
- Aitken Nuclei;
- Cloud Chambers;
- Counters;
- Ice Nuclei;
- Nucleation;
- Particle Density (Concentration);
- Cloud Physics;
- Condensing;
- Precipitation Particle Measurement;
- Instrumentation and Photography