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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, YiChi Li, BaoLin Bao, AnMing Zhou, ChengHu Chen, Xi Zhang, XueRen |
| Copyright Year | 2007 |
| Abstract | Alpine snowmelt is an important generation mode for runoff in the source region of the Tarim River basin, which covers four subbasins characterized by large area, sparse gauge stations, mixed runoff supplied by snowmelt and rainfall, and remarkably spatially heterogeneous precipitation. Taking the Kaidu River basin as a research area, this study analyzes the influence of these characteristics on the variables and parameters of the Snow Runoff Model and discusses the corresponding determination strategy to improve the accuracy of snowmelt simulation and forecast. The results show that: (i) The temperature controls the overall tendency of simulated runoff and is dominant to simulation accuracy, as the measured daily mean temperature cannot represent the average level of the same elevation in the basin and that directly inputting it to model leads to inaccurate simulations. Based on the analysis of remote sensing snow maps and simulation results, it is reasonable to approximate the mean temperature with 0.5 time daily maximum temperature. (ii) For the conflict between the limited gauge station and remarkably spatial heterogeneity of rainfall, it is not realistic to compute rainfall for each elevation zone. After the measured rainfall is multiplied by a proper coefficient and adjusted with runoff coefficient for rainfall, the measured rainfall data can satisfy the model demands. (iii) Adjusting time lag according to the variation of snowmelt and rainfall position can improve the simulation precision of the flood peak process. (iv) Along with temperature, the rainfall increases but cannot be completely monitored by limited gauge stations, which results in precision deterioration. |
| Starting Page | 26 |
| Ending Page | 35 |
| Page Count | 10 |
| File Format | |
| ISSN | 10069313 |
| Journal | Science in China Series D: Earth Sciences |
| Volume Number | 50 |
| Issue Number | 1 |
| e-ISSN | 18622801 |
| Language | English |
| Publisher | Science in China Press |
| Publisher Date | 2007-01-01 |
| Publisher Place | Beijing |
| Access Restriction | Subscribed |
| Subject Keyword | snowmelt runoff model (SRM) Kaidu River basin runoff simulation runoff coefficient for rainfall time lag Geosciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences |
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