【摘要】 [目的]验证能量平衡融雪模型在天山西向阳坡融雪速率预测中的适用性。[方法]实验在天山积雪雪崩研究站进行。在天山西向阳坡设置了3个融雪水收集样点,测定每小时的融雪径流量。应用能量平衡融雪模型计算感热和潜热量,并对融雪速率进行预测。最后对预测结果的精确度进行了详细探讨。[结果]结果表明,感热通量和潜热通量分别占能量输入的13.4%和能量输出的15.1%。较低的Dv值和较高的R2值(分别为0.86、0.92和0.91)表明模型预测的融雪水当量与实测值一致。[结论]本研究证明能量平衡融雪模型是一个有效的融雪预测工具。更多还原

【Abstract】 [Objective] The study aimed to apply energy balance snowmelt model for estimating the snowmelt runoff generated by seasonal snow in Tianshan Mountains.[Method] Three snow water collecting sites were set on a sunny slope in western Tianshan Mountains to measure the snowmelt rates at hourly interval.The positive sensible heat and negative latent heat fluxes were calculated by the energy balance snowmelt model;the snowmelt rate was also estimated by the model.Finally,the accuracy for the model was investigated in detail.[Result] The results indicated that sensible heat fluxes and latent heat fluxes accounted for 13.4% of total energy input and 15.1% of energy output,respectively.A good agreement between observed and estimated SWE was proved by low volume difference and the high Nash-Sutcliff coefficients(R 2) which were 0.86,0.92 and 0.91,respectively.[Conclusion] The energy balance snowmelt model has been proved to be a powerful tool for snowmelt estimation.更多还原