In this study, new stochastic point rainfall models which can consider the correlation structure between rainfall intensity
and duration are developed. In order to consider the negative and positive correlation simultaneously, the Gumbel’s type-II
bivaria te distribution is applied, and for the cluster structure of rainfall events, the Neyman-Scott cluster point process
is selected. In the theoretical point of view, it is shown that the models considering the dependent structure between rainfall
intensity and duration have slightly heavier tail autocorrelation functions than the corresponding independent models. Results
from generating long time rainfall events show that the dependent models better reproduce historical rainfall time series
than the corresponding independent models in the sense of autocorrelation structures, zero rainfall probabilities and extreme
rainfall events.
Keywords correlation - rainfall duration - rainfall intensity - stochastic rainfall model