基于TRMM降水数据的空间降尺度模拟

赵娜, 焦毅蒙

Downscaling of TRMM Satellite Precipitation Data

ZHAO Na,JIAO YiMeng

表1 不同降尺度方式及降尺度前后结果误差

Tab. 1 Errors of downscaling methods and the original TRMM data

误差 TRMM GWR GWRoptimal-HASM GWR-HASM 1月 MAE/mm 0.9282 0.9259 0.9271 0.9488 RMSE/mm 1.2213 1.1860 1.1759 1.2285 PBIAS/% -0.2071 -0.3033 -0.2005 -0.2602 4月 MAE/mm 4.6879 2.1075 2.0107 2.7614 RMSE/mm 7.5588 2.6821 2.5658 4.1456 PBIAS/% -2.2401 -1.0159 -1.0002 -1.2880 7月 MAE/mm 43.5698 43.000 42.1283 44.9397 RMSE/mm 54.4638 53.7348 52.5625 55.6298 PBIAS/% 0.4971 0.4967 0.4817 0.5051 10月 MAE/mm 4.2226 2.7978 2.4975 3.1629 RMSE/mm 5.7366 3.4299 2.8917 4.0989 PBIAS/% -1.5358 -0.9615 -0.8491 -1.1724