Arid Zone Research ›› 2022, Vol. 39 ›› Issue (4): 1090-1101.doi: 10.13866/j.azr.2022.04.10

• Water Resources and Utilization • Previous Articles     Next Articles

Applicability of CMADS in runoff simulation of Yulong Kashi River

LUO Chengyan1(),CHEN Fulong1(),HE Chaofei1,LONG Aihua1,2,QIAO Changlu1   

  1. 1. College of Water & Architectural Engineering, Shihezi University, Shihezi 832000, Xinjiang, China
    2. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
  • Received:2022-01-04 Revised:2022-03-24 Online:2022-07-15 Published:2022-09-26
  • Contact: Fulong CHEN E-mail:2861413917@qq.com;cfl103@shzu.edu.cn

Abstract:

In this paper, the Yulong Kashi River Basin was selected as the research area, and the runoff simulation of SWAT hydrological model driven by The China Meteorological Assimilation Driving Datasets (CMADS) for the SWAT model was carried out to assess the accuracy of CMADS in the watershed and its applicability to the SWAT model. The results showed that (1) the correlation coefficients of precipitation, maximum temperature, and minimum temperature of CMADS with the measured hydrological stations were 0.650, 0.998, and 0.995, respectively, and their simulation of temperature was significantly better than that of precipitation. The spatial-temporal distribution characteristics of CMADS to precipitation and maximum and minimum temperatures were studied by using collaborative Kriging interpolation, which shows that the data set can well capture the topographic characteristics of the underlying surface in the study area, and its meteorological data has high quality. (2) With regard to runoff simulation of the SWAT model, except for poor simulation, the Nash-Sutcliffe efficiency coefficient of the periodic rate and validation period reached 0.845 and 0.836, respectively, and satisfactory simulation results were obtained. This paper showed that the CMADS+SWAT model had good applicability for hydrological simulation in the study area and provided an alternative to construct a hydrological model in areas with scarce ground stations, which plays a certain role in promoting hydrological simulation in cold and dry areas.

Key words: Yulong Kashi River, cold and arid area, reanalysis data, temporal and spatial distribution characteristics, SWAT model