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Comparison between two Aitken counters and with cloud condensation nuclei counters at the 1980 International CCN WorkshopThe 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.
Document ID
19820007533
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rogers, C. F.
(Desert Research Inst. Reno, NV, United States)
Mckenzie, R. L.
(NBS Washington, D.C., United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1981
Publication Information
Publication: The Third Intern. Cloud Condensation Nuclei Workshop
Subject Category
Instrumentation And Photography
Accession Number
82N15406
Funding Number(s)
CONTRACT_GRANT: NAS8-33820
CONTRACT_GRANT: NSF ATM-79-21558
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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