复杂地形下降水的高空间分辨率插值方法研究

郎立晨, 唐诚, 高星, 李志慧, 吴锋

Spatial interpolation of high-resolution daily precipitation over complex terrains

LANG Lichen, TANG Cheng, GAO Xing, LI Zhihui, WU Feng

表4 日降水插值结果、产品验证评价指标

Tab. 4 Verification evaluation index of daily precipitation interpolation results and products

参数及计算公式	含义	推荐值
$C C = \frac{(O_{i} - \bar{O}) (S_{i} - \bar{S})}{\sqrt{{(O_{i} - \bar{O})}^{2} {(S_{i} - \bar{S})}^{2}}}$	降水实测值与估计值的线性相关系数	1
$M A E = \frac{1}{N} \sum_{i = 1}^{n} \|(S_{i} - O_{i})\|$	估计值相对实测值的平均绝对误差	0
$N S E = 1 - \frac{\sum_{i = 1}^{n} {(O_{i} - S_{i})}^{2}}{\sum_{i = 1}^{n} {(O_{i} - \bar{O})}^{2}}$	刻画估计值与实测值之差与实测值方差的相对值，值越大，误差占比越小，两者分布越贴合1∶1线	1
$R B = \frac{\sum_{i = 1}^{n} (S_{i} - O_{i})}{\sum_{i = 1}^{n} O_{i}} \times 100 %$	估计值相对观测值的偏差	0