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Background <br />Sensor inaccuracyhigh ETref error <br />Of examples in literature that examine ET sensitivity <br />o Few use sensor accuracy as bounds <br />o Nearly all vary one variable at a time, two at most <br /> <br />Objectives: <br />Evaluate sensitivity of ASCE Standardized Reference <br />ET Equation ETos based on sensor accuracy: <br />o Local sensitivity (max. error range) <br />o Global Sensitivity Analysis (GSA) – two methods <br />o Two locations: semi-arid (Colorado), and humid (Florida) <br /> DeJonge, K.C., M. Ahmadi, J.C. Ascough II, K.D. Kinzli. 2015. Sensitivity analysis of reference <br />evapotranspiration to sensor accuracy. Computers and Electronics in Agriculture 110: 176-186. <br />