[1]ZHU Honglei,SHI Xiaoliang,LI Yingchen,et al.Evaluation of Runoff Simulation Using TRMM Precipitation Data Based on SWAT Model[J].Research of Soil and Water Conservation,2017,24(05):105-112.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 05
Page number:
105-112
Column:
Public date:
2017-10-28
- Title:
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Evaluation of Runoff Simulation Using TRMM Precipitation Data Based on SWAT Model
- Author(s):
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ZHU Honglei1, SHI Xiaoliang2, LI Yingchen' target="_blank" rel="external"> LI Yingchen1, LI Ying3
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1. He’nan Normal University, Xinxiang, He’nan 453002, China;
2. Xi’an University of Science and Technology, Xi’an, 710054, China;
3. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
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- Keywords:
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TRMM; runoff simulation; SWAT; suitability evaluation; uncertainty analysis
- CLC:
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P333
- DOI:
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- Abstract:
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Four runoff simulation scenarios were constructed in Huifa river basin using the distributed hydrological model SWAT at monthly and daily scales with observed precipitation data and TRMM precipitation products as the input of model. Then, parameter sensitivity, parameter uncertainty and runoff simulation were analyzed under different precipitation inputs and time scale using SUFI_2 algorithm. The results showed that: (1) the error of TRMM precipitation products could change the parameters of sensitivity ranking, especially on the daily scale; (2) P-factor of four simulated scenarios was in the range of 0.58~0.9 and R-factor in the range of 0.47~1.58, which indicated that the model had the better fitting precision; TRMM data could make the runoff simulation uncertainty significantly improved due to its small estimate error at month scale and higher spatial resolution; with the change of time scale, increasing TRMM data error at daily scale could lead to the enlarged uncertainty of daily runoff simulation; (3) on the monthly and daily scales, both NS and R2 of runoff simulation using the TRMM data reached to a good level, and the result simulated by using measured rainfall was slightly better than that of the TRMM data. The results suggested that the TRMM precipitation products were a reliable source of precipitation data for runoff simulation in Huifa River Basin.