This study has evaluated Satellite Based Precipitation (SBP) products at key basins in Bolivia. Three basins of national interest were selected at different ecological steps: highlands, valleys and lowlands. GSMaP and CHIRPS products were tested showing promising detection abilities especially in regions with high elevation. At highlands the correlation coefficients of both SBP products showed values from 0.915 to 0.976. On the other hand, at lowlands, the coefficient values ranged from 0.895 to 0.926. Then, the combined products of GSMaP and CHIRPS with national rain gauge network were obtained using correction factors iteratively at sub-basin scale. The national sub-basins coding system of was used. These combined products so-called GS and CH showed a notorious improvement from 0.996 to 0.999 in relation to raw SBP products. At lowland regions results showed the largest improvement percentage in comparison with the other regions suggesting that higher intensities play a key role for correction scheme. The proposed scheme is feasible to implement with other SBP products and in other regions. The precipitation at sub-basins scale allows performing water balance, hydrological studies, biophysical assessments, water management planning among other applications.

中文翻译：

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玻利维亚主要流域基于卫星的降水产品评估

这项研究评估了玻利维亚主要流域的基于卫星的降水（SBP）产品。在不同的生态步骤中选择了三个国家利益的盆地：高地，山谷和低地。对GSMaP和CHIRPS产品进行了测试，显示出有希望的检测能力，尤其是在高海拔地区。在高原地区，两种SBP产品的相关系数均显示为0.915至0.976。另一方面，在低地，系数值的范围为0.895至0.926。然后，使用校正因子在次流域尺度上迭代获得了GSMaP和CHIRPS与国家雨量计网络的组合产品。使用了国家子流域编码系统。与原始SBP产品相比，这些所谓的GS和CH合并产品显示出从0.996到0.999的臭名昭著的改进。与其他地区相比，在低地地区的结果显示出最大的改善百分比，这表明较高的强度在校正方案中起关键作用。所提出的方案与其他SBP产品和其他地区一起实施是可行的。次流域规模的降水可以进行水平衡，水文研究，生物物理评估，水管理计划等应用。