Intercomparison of Mee and NCAR Ice Nucleus Counters and the CSU Isothermal Chamber

Authors

  • G. Langer National Center for Atmospheric Research
  • D. Garvey Colorado State University

Abstract

Two Mee counters, an NCAR counter, and the Colorado State University isothermal chamber were compared for their ability to count ice forming nuclei in the -16° to -20° range. After several improvements were made on the Mee counters, all devices were in relatively good agreement for counting silver iodide aerosol particles generated from acetone burners and pyrotechnic flares. The Mee counter has the ability to follow rapid changes in nucleus concentration. It was not possible to operate it above -16°C. The Mee counter requires considerable operator skill and is difficult to operate on an aircraft.

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Scientific Papers