Automated Chamber System to Measure Field Evapotranspiration Rates
Perrine Hamel, Ian Mchugh, Andrew Coutts, Edoardo Daly, Jason Beringer, Tim D Fletcher
Journal of Hydrologic Engineering | ASCE-AMER SOC CIVIL ENGINEERS | Published : 2015
Reliable estimation of evapotranspiration is important for many hydrological applications, including agriculture, climatology, and assessment of stormwater control measures. An automated chamber system was constructed to measure field evapotranspiration. The system consists of six chambers, sampled consecutively by means of a dynamic closed-chamber design, and is fully automated to allow replicable long-term measurements. However, the use of such a system is subject to measurement errors due to vapor adsorption along the sampling tubes and inappropriate internal ventilation. Because these issues are rarely addressed in the literature on flux chambers, a laboratory calibration was performed t..View full abstract
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Awarded by ARC Future Fellowships
We thank the technical staff of the Civil Engineering department, Frank Winston, Richard Williamson, and Anthony Brosinsky, for their help in building and testing the chamber system. This project was in part funded by the Cities as Water Supply Catchments Program under the CRC for Water Sensitive Cities, with Hamel supported by a scholarship from this program. Fletcher and Beringer are both supported by ARC Future Fellowships (FT100100144 and FT110100602, respectively).