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A SENSITIVITY AND ERROR ANALYSIS CF PROCEDURES USED FOR ESTIMATING EVAPORATION 1
Author(s) -
McCuen Richard H.
Publication year - 1974
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1974.tb00590.x
Subject(s) - evaporation , sensitivity (control systems) , environmental science , pan evaporation , meteorology , error analysis , potential evaporation , atmospheric sciences , mathematics , geology , geography , engineering , electronic engineering
Sensitivity and error analyses were used to examine the following objectives: (1) analyze the structure of commonly used evaporation models; (2) provide estimates of the effect of variation in meteorological factors on observed evaporation rates; and (3) estimate the effect of error in measurements of the meteorological factors. The results indicate error in evaporation estimates resulting from measurement error in meteorological factors is probably much less than five percent of the computer evaporation rate. Variation with both time and space of the importance of the different meteorological factors is demonstrated. The sensitivity analysis indicates that the Fractional‐Evaporation Equivalent method is structurally inadequate and the Weather Bureau model is more flexible than the Penman model. However, the Penman model appears to provide more realistic estimates of the importance of the various meteorological factors.