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RESPONSE OF GREEN‐AMPT MEIN‐LARSEN SIMULATED RUNOFF VOLUMES TO TEMPORALLY AGGREGATED PRECIPITATION 1
Author(s) -
King K W.
Publication year - 2000
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.1752-1688.2000.tb04306.x
Subject(s) - precipitation , surface runoff , storm , environmental science , interval (graph theory) , drainage , hydrology (agriculture) , hydraulic conductivity , range (aeronautics) , intensity (physics) , zoology , mathematics , soil science , meteorology , geology , geography , soil water , materials science , ecology , physics , geotechnical engineering , combinatorics , biology , quantum mechanics , composite material
Data collection frequency in automated systems is user determined and can range from seconds to hours or days. Currently, there is no standard or recommended frequency interval for collecting precipitation data from automated systems for input to event‐based models such as Green‐Ampt Mein‐Larsen (GAML). Data from 47 storm events at seven locations were used to simulate the response of GAML excess rainfall to temporally aggregated precipitation data. No difference in model efficiency was recognized when comparing one‐minute interval data (R 2 = 1.00) to five‐minute data (R 2 = 1.00). Very little model efficiency was lost at a 10‐minute (R 2 = 0.96) interval. After 10‐minutes, decline in efficiency became more rapid with R 2 = 0.16 at one hour. The combined effect of time interval with respect to drainage area, hydraulic conductivity, maximum 30‐minute intensity, and total precipitation also revealed similar results.