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Shielding Precipitation Gages from Adverse Wind Effects with Snow Fences


The development and operation of a research project designed to investigate the possibility of shielding precipitation gages from adverse wind effects by using artificial wind barriers, such as snow fences, is described. The project was under the direction of the Wyoming Water Resources Research institute and was funded by the National Oceanic and Atmospheric Administration.

A description is given of the project including an extensive literature review. Installation and site development, data collection and processing for precipitation, wind, and snow drift data, recommendations, and conclusions. Also included is a description of a wind tunnel analysis of one of the test gage configurations.

The general conclusion is that under the conditions encountered during this study, snow fences can be used to protect precipitation gages from adverse wind effects when measuring winter precipitation.

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