This model is used to demonstrate some simple ways to model average precipitation over a period of time for a daily or monthly time step without the use of historic time series data. These methods do not simulate rain events but instead just output average values distributed over the months. The first method just uses an annual average rainfall with seasonal factors being applied. Monthly precipitation just uses the Month index to return the value from the Vector. The linear and spline interpolation methods provide a way to interpolate between monthly values to prevent sharp jumps in rain values.
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