Applicability Assessment and Uncertainty Analysis of Multi-Precipitation Datasets for the Simulation of Hydrologic Models

Water

Qin Yang¹  Yongyu Song¹  Jing Zhang¹  Binbin Guo¹  Tingbao Xu²  Anthony Jakeman²  Barry Croke²  Xiaohui Lei³  Weihong Liao³ 

[1] Beijing Key Laboratory of Resource Environment and Geographic Information System, Capital Normal University, Beijing 100048, China;Fenner School of Environment and Society, The Australian National University, Canberra, ACT 2601, Australia;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China;

关键词: precipitation;    TMPA-3B42V7;    CMADS;    hydrologic model;    uncertainty;   

DOI  :  10.3390/w10111611

来源: DOAJ

【 摘 要 】

Hydrologic models are essential tools for understanding hydrologic processes, such as precipitation, which is a fundamental component of the water cycle. For an improved understanding and the evaluation of different precipitation datasets, especially their applicability for hydrologic modelling, three kinds of precipitation products, CMADS, TMPA-3B42V7 and gauge-interpolated datasets, are compared. Two hydrologic models (IHACRES and Sacramento) are applied to study the accuracy of the three types of precipitation products on the daily streamflow of the Lijiang River, which is located in southern China. The models are calibrated separately with different precipitation products, with the results showing that the CMADS product performs best based on the Nash–Sutcliffe efficiency, including a much better accuracy and better skill in capturing the streamflow peaks than the other precipitation products. The TMPA-3B42V7 product shows a small improvement on the gauge-interpolated product. Compared to TMPA-3B42V7, CMADS shows better agreement with the ground-observation data through a pixel-to-point comparison. The comparison of the two hydrologic models shows that both the IHACRES and Sacramento models perform well. The IHACRES model however displays less uncertainty and a higher applicability than the Sacramento model in the Lijiang River basin.

【 授权许可】

Unknown