Recently, gridded precipitation datasets (GPDs) have become an essential input in hydrological modeling. Evaluation of their performance is a priori step before their application. When they are applied to a glaciated catchment, the glacier mass balance adds another dimension to the evaluation. This study has attempted to introduce the Turc-Budyko formula for validating the GPDs in glaciated catchments. This approach can identify the over- or under-estimation of catchment precipitation input by the GPDs. As a case study, the approach was applied in Upper Indus Basin (UIB), located in High Mountain Asia. The Turc-Budyko formula and other commonly used evaluation techniques found that APHRODITE underestimated the precipitation by 40 %, although it captured most of inter- and intra-annual variations of local climatology (CC > 0.6). CFSR and HAR were overestimated (106 % and 77 %) and characterize UIB as “Leaky” catchment, whereas underestimated GPDs characterize UIB as “Gaining” catchment. In leaky conditions, glacier storage changes were positive (0.21–0.37 m w.e. yr⁻¹); while gaining conditions made negative glacier storage changes (-0.44 to −0.34 m w.e. yr⁻¹) in UIB. None of the GPDs represented true conditions of glacio-hydrology in UIB. Introducing the Turc-Budyko formula confirmed that direct application of GPDs in hydrological modeling is implausible because GPDs generally cannot produce rational output of streamflow and mass balance simultaneously. It is recommended to locally correct the GPDs before any hydrological application in glacierized catchments.

最近，网格化降水数据集 (GPD) 已成为水文建模的重要输入。对其性能的评估是其应用之前的先验步骤。当它们应用于冰川集水区时，冰川质量平衡为评估增加了另一个维度。本研究试图引入 Turc-Budyko 公式来验证冰川流域的 GPD。这种方法可以识别 GPD 对流域降水输入的高估或低估。作为一个案例研究，该方法应用于位于亚洲高山的上印度河盆地 (UIB)。Turc-Budyko 公式和其他常用评估技术发现 APHRODITE 低估了 40% 的降水量，尽管它捕获了当地气候学的大部分年际和年内变化 (CC > 0.6)。CFSR 和 HAR 被高估（106 % 和 77 %）并将 UIB 描述为“泄漏”的集水区，而低估的 GPD 将 UIB 描述为“正在获得”的集水区。在渗漏条件下，冰川储存变化是积极的（每年 0.21-0.37 m^-1 ); 在获得条件的同时，UIB 中的冰川储量发生了负变化（-0.44 到 -0.34 m 我们 yr ^-1）。没有一个 GPD 代表 UIB 中冰川水文的真实情况。Turc-Budyko 公式的引入证实了在水文建模中直接应用 GPD 是不可信的，因为 GPD 通常不能同时产生合理的流量和质量平衡输出。建议在冰川流域进行任何水文应用之前对 GPD 进行局部修正。