干旱区生态环境知识资源中心(Arid): 基于改进降水输入模块的融雪径流模拟:以拉萨河为例

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	基于改进降水输入模块的融雪径流模拟:以拉萨河为例
其他题名	Simulation of snowmelt runoff processes based on enhanced precipitation input module:Case studies in the Lhasa River basin
	刘江涛; 徐宗学; 赵焕; 彭定志
来源期刊	水利学报
ISSN	0559-9350
出版年	2018
卷号	49 期号:11 页码:1396-1408
中文摘要	降水是自然界物质循环和水循环的重要组成部分,是高寒地区径流的重要来源,水文模型中降水数据的输入精度对提高高寒地区融雪径流模拟效果具有十分重要的作用。青藏高原地区气象站点较少,站点数据无法全面反映流域内降水时空分布的真实情况,传统的融雪径流模型在地形、风向和水汽等要素对降水垂直分布的影响考虑不够全面,制约了模型在山区融雪模拟以及预测中的应用,因此有必要对模型的降水输入项进行改进,以期提高半干旱高寒地区融雪径流模拟效果。本文基于改进的遥感卫星数据校正理论,开发了适用于半干旱高寒地区的降水输入模块,将其与度日因子模型进行耦合,利用高程分带将降水组合成半网格半站点的降水输入数据驱动模型,并在拉萨河流域进行试验研究。结果表明:降水输入模块能够显著提高降水卫星反演地面降水精度,改进后的融雪模型在率定期和验证期的NSE(Nash-Sutcliffe efficiency coefficient)分别为0.741和0.770,高于原融雪模型的模拟效果,表明改进后的模型能够在流域各个分区获得较为精确的降水数值,融雪径流模拟精度比原模型精度得到提高。总之,耦合降水输入模块的融雪模型可以有效提高降水输入精度,对缺资料半干旱高寒地区融雪模拟具有重要的参考价值。
英文摘要	Precipitation is one of the most important components of mass balance and hydrological cycle in the natural systems and it is a dominant source of snowmelt runoff in the Alpine.Precipitation is also an important input variable for the snowmelt runoff model.It is,therefore,essential and significant to improve the accuracy of the precipitation in the snowmelt model.Qinghai-Tibet plateau is gauge scarce region and the meteorological stations are scarce to meet the demand of related studies.The meteorological station data are unable to describe the spatial and temporal distribution of precipitation.The precipitation lapse rate(PLAPS)is used in SRM to obtain the precipitation data in the different zones and the factors that terrain,wind direction,and water vapor will be ignored by the method of PLAPS.It is an important way to improve the accuracy of the snowmelt model by enhancing the module for input precipitation.A module of input precipitation was developed in this study by using the modified Successive Correction method in the semi-arid and alpine region,and it was coupled into the snowmelt runoff model.The new model was utilized to simulate snowmelt runoff in the Lhasa River basin.The results showed that the accuracy of the precipitation satellite was improved by modifying the precipitation module.The Nash-Sutcliffe efficiency coefficient values of the new model were 0.741 and 0.770 in the calibration period(2001-2007)and validation period(2008-2014).The values of Nash-Sutcliffe efficiency of streamflow using the new model were higher than the values of the original model,which indicated that this paper provided an effective approach to improve the accuracy of snowmelt simulation for gauge scarce basin in the semi-arid and alpine region.
中文关键词	融雪径流模型 ; 降水 ; 数据订正 ; 拉萨河
英文关键词	snowmelt runoff model precipitation data revision Lhasa River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6381084
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238260
作者单位	北京师范大学水科学研究院;;城市水循环与海绵城市技术北京市重点实验室, ;;城市水循环与海绵城市技术北京市重点实验室, ;;, 北京;;北京 100875;;100875, 中国
推荐引用方式 GB/T 7714	刘江涛,徐宗学,赵焕,等. 基于改进降水输入模块的融雪径流模拟:以拉萨河为例[J]. 北京师范大学,2018,49(11):1396-1408.
APA	刘江涛,徐宗学,赵焕,&彭定志.(2018).基于改进降水输入模块的融雪径流模拟:以拉萨河为例.水利学报,49(11),1396-1408.
MLA	刘江涛,et al."基于改进降水输入模块的融雪径流模拟:以拉萨河为例".水利学报 49.11(2018):1396-1408.