Rainfall interpolation

• A(x) - Normal annual rainfall at location x
• Pi - Hourly precipitation at gauge location xi
• P(x) - Hourly precipition at (non gauge) location x.
• Ni = Pi/A(xi) - Normalized hourly precipitation at gauge i.

Weight or basis function for linear interpolation of normalized precipitation at location x from gauges at nodes of the encompassing Delauney triangle

P(x) = N(x) A(x) - Precipitation estimate for location x.

Over subbasin

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