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The Optical Array: An Alternative to Scattering or Extinction for Airborne Particle Size Determination

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  • 1 The National Center for Atmospheric Research, Boulder, Colo.
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Abstract

An electro-optical technique is described for the measurement of the size distributions of cloud and precipitation particles. The technique utilizes a linear array of photodetectors as a size measuring grid in a typical shadowgraph-type imaging system. Several instruments have been designed and are described in various stages of testing and development. A thorough description of one such instrument and preliminary field data are given.

Abstract

An electro-optical technique is described for the measurement of the size distributions of cloud and precipitation particles. The technique utilizes a linear array of photodetectors as a size measuring grid in a typical shadowgraph-type imaging system. Several instruments have been designed and are described in various stages of testing and development. A thorough description of one such instrument and preliminary field data are given.

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