Premium
Synthesis of Urban Rainfall
Author(s) -
Raudkivi A. J.,
Lawgun N.
Publication year - 1970
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/wr006i002p00455
Subject(s) - storm , sampling (signal processing) , environmental science , frequency distribution , climatology , hydrology (agriculture) , meteorology , statistics , geology , mathematics , geography , geotechnical engineering , filter (signal processing) , computer science , computer vision
A statistical analysis of rainfall records is used to develop a computer model for generation of a sequence of short period rainfalls. The time intervals between rainfalls are generated by sampling from a frequency distribution fitted to the historical data. The model also uses a first order Markov process in addition to random sampling from a frequency distribution, to obtain the rainfall durations. Rainfall depths are obtained by sampling from the joint distribution of rainfall depths and durations. Model parameters are based on the meterologic conditions of the Auckland area, and all statistical tests were performed at a 5% level of significance. The model produces comparable time intervals between storms and a linear correlation between rainfall depths and durations, but extreme values of rainfall depths and durations are absent from the generated data.