**Acknowledgements**

This study is supported by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP, Grant No. 2019QZKK0208), and the Research Fund for Introducing Talents of Yunnan University (No. YJRC3201702). We are thankful to the Surface Water Hydrology Project of the Water and Power Development Authority (SWHP-WAPDA) of Pakistan for providing the required meteorological data to conduct this study.
