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A statistical method is presented which uses sparsely distributed raingages to obtain calibrations for satellite‐based rainfall algorithms. The method can also be used for the development and verification of these algorithms. It is assumed that the distributions of areal rainfall, given a value of a satellite areal rainfall estimate, are homogeneous and stationary over a region encompassing a network of sparse raingages. The method may best be applied over open ocean regions to supplement the limited number of dense raingage/radar networks there. A description of the method is given, followed by an illustration of the method using simulated rain fields. Finally, the method is used to calibrate a simple satellite rainfall algorithm using Pacific atoll monthly raingage data.
Mark L. Morrissey (Sun,) studied this question.