The Reliability of an Optical Technique for Measuring Snowfall Rates

Charles E. Robertson Atmospheric Sciences, Univ6rsity of Washington, Seattle 98105

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Abstract

Data from an optical snow-rate sensor have been compared with snowfall rates measured directly and with crystal types and degrees of riming. it is shown that the device provides a reliable measure of snowfall rate only when the crystals are unrimed. This may be characteristic of any such instrument based on this optical technique.

Abstract

Data from an optical snow-rate sensor have been compared with snowfall rates measured directly and with crystal types and degrees of riming. it is shown that the device provides a reliable measure of snowfall rate only when the crystals are unrimed. This may be characteristic of any such instrument based on this optical technique.

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