Zakaria, Ahmad
(2011)
A study of periodic and stochastic modeling of
monthly rainfall from Purajaya station.
Asian Transactions on Engineering, 1 (3).
pp. 1-7.
ISSN 2221-4267
Abstract
Abstract— A study was done using monthly rainfall data with
long data 25 years (1977-2001) of Purajaya station. The goal of
this research is to study periodic and stochastic models of data
series of the monthly cumulative rainfall. Based on daily rainfall
data, monthly cumulative rainfall data series was calculated. The
series of rainfall is assumed to be free of trend. Periodicities of
rainfall data were presented using 125 periodic components.
Stochastic series of rainfall data are assumed as residues between
rainfall data with periodic rainfall model. Stochastic components
were calculated using the approach of autoregressive model.
Stochastic Model presented in this research is using the fourth
orders autoregressive model. Validation between data and the
model is done by calculating the correlation coefficient. For this
study, the correlation coefficient between the data and the model
of the cumulative monthly rainfall is 0.9992. From the results of
this study can be inferred that the model of the monthly rainfall
from Purajaya station gives highly accurate approach.
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A study of periodic and stochastic modeling of
monthly rainfall from Purajaya station. (deposited 30 Sep 2016 01:23)
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