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Synthesis of radar rainfall data
Author(s) -
Krajewski Witold F.,
Georgakakos Konstantine P.
Publication year - 1985
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr021i005p00764
Subject(s) - radar , environmental science , rain gauge , meteorology , precipitation , sensitivity (control systems) , weather radar , field (mathematics) , remote sensing , computer science , mathematics , geology , geography , engineering , telecommunications , electronic engineering , pure mathematics
A method of generating synthetic radar‐rainfall data is described. The data are generated by imposing random noise on a given, high‐quality radar‐rainfall field. Certain conditions are imposed on the resultant rainfall field so that the noise parameters are prespecified. The conditions pertain to the second order statistics of the generated rainfall fields: the mean, the variance, the correlation, and the variance of the logarithmic ratio of the resultant field to the original field. Accuracy of the generation method is evaluated from implementing a test case using Global Atmospheric Research Program Atlantic Tropical Experiment radar data. The method can be used in a number of different, mainly hydrologic, applications. These include validation of radar and rain gage data merging procedures, testing of various methods for computation of mean areal precipitation, and sensitivity analysis of rainfall‐runoff models.