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The Irrigage: A Non-Evaporating In-Field Precipitation Gage

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  022068,  2002 ASAE Annual Meeting . (doi: 10.13031/2013.10391) @2002
Authors:   Gary A. Clark, Danny H. Rogers, Ergun Dogan, Ryan Krueger
Keywords:   rain gage, precipitation gage, irrigation uniformity

This paper presents the construction details and measurement data associated with a nonevaporating, in-field precipitation gage (the Irrigage). Field data include sprinkler uniformity measurements with Irrigages and other larger catch-can devices. Irrigages were also compared to other precipitation collection devices in an in-field device evaporation study during the 2001 summer. During the study period, air temperatures often exceeded 38 C and daily grass-reference evapotranspiration rates exceed 8 mm/day. Evaporation losses from Irrigages were negligible over a week-long measurement period, while substantial evaporation losses were associated with standard rain gages and other catch can devices.

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