长江流域资源与环境 >> 2016, Vol. 25 >> Issue (10): 1618-1625.doi: 10.11870/cjlyzyyhj201610017
黄钰瀚1, 张增信1, 费明哲2, 金秋1
HUANG Yu-han1, ZHANG Zeng-xin1, FEI Ming-zhe2, JIN Qiu1
摘要: 以赣江流域为研究区,基于观测降水和TRMM准实时数据(3B42RTV6、3B42RTV7)和分析数据(3B42V6、3B42V7),驱动VIC水文模型,开展卫星降水产品在赣江流域的水文模拟,评估TRMM降水产品在水文模拟中的应用能力。结果表明:(1)在赣江流域,3B42V7估算的降水与实测降水的对比结果最好,3B42RTV6的估算精度最低,3B42RTV7较3B42RTV6在赣江流域的降水估算精度提升非常明显;(2)在径流模拟方面,3B42V6和3B42V7在日尺度上尽管对洪峰的模拟有所偏差,但模拟结果仍能反映径流变化特征,在月尺度上模拟结果精度较高,纳什系数均在0.9以上,并且二者在4、5月的径流模拟结果较好,7、8月的模拟结果较差,而3B42RTV6对径流的模拟能力较差,日径流量和月径流量均呈现明显低估,3B42RTV7对径流的模拟结果比3B42RTV6有明显改善,可以满足实时水文预报的需求。
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