New scale factor construction method for land water reserve leakage error correction

The invention discloses a novel scale factor construction method for land water reserve leakage error correction, relates to the technical field of land water reserve inversion, and solves the problems that a traditional scale factor method for correcting leakage errors seriously depends on a used single hydrological model, different hydrological models have regional differences and large uncertainty, and the error correction accuracy is poor. In order to solve the problem that a traditional scale factor method can cause large system deviation in estimation of leakage errors, the main points of the technical scheme are as follows: 1, a new scale factor construction method for correcting the leakage errors of the land water reserves is characterized by specifically comprising the following steps of: a) calculating GRACE land water reserve abnormal data according to a GRACE earth gravitational field spherical harmonic coefficient; the method has the advantages that a novel theoretically perfect method for weigh