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气象:2014,40(3):349-354
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南疆开都河流域夏季径流量的变化及其特征分析
(南京信息工程大学遥感学院,南京 210044)
Variation and Analysis of Summer Runoff over Kaidu River Valley in South Xinjiang
(School of Remoting Sensing, Nanjing University of Information Science and Technology, Nanjing 210044)
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投稿时间:2012-10-22    修订日期:2013-11-07
中文摘要: 利用RegCM3模式对开都河流域2000—2006年夏季气候进行模拟,结果表明:模式对于流域夏季月降水总量和月平均气温的空间分布有较好的模拟能力。结合站点海拔高度值、实测值以及模拟量分别对降水、气温进行修正,并由此计算流域的面雨量和平均温度;结果表明开都河流域夏季面雨量与开都河同期实测径流量有较好的一致性,R2达到0.97。对开都河流域夏季平均气温、面雨量以及径流量的分析表明,降水是影响流域夏季径流量的主要影响因子;而气温对于径流呈现负贡献的原因可能由于对温度敏感的小冰川大大减少,致使径流量随着温度增加而增加的关系减弱。此外,气温升高导致流域蒸散量的提高,可能是气温呈现负贡献的又一原因。
Abstract:The regional climate model (RegCM3) is used to simulate the summer (June to August) climate from 2000 to 2006 over the Kaidu River Valley. The results reveal that the model has a good ability to reproduce the distribution of precipitation and temperature. The altitude, observed data and simulated data are used to revise the simulated temperature and precipitation, and then the areal rainfall and average temperature are calculated. It is proved that there is a good consistency between runoff and precipitation over the Kaidu River Basin, and R2 is 0.97. The analyses of the summer average temperature, areal rainfall and runoff show that the main impact factor of Kaidu River’s runoff is precipitation. The reason why temperature makes a negative contribution to runoff is probably because of the reducing of the small and middle sized glaciers, which causes the runoff to decrease and temperature to rise. The other reason maybe is the rise of temperature, which can lead to the increase of evapotranspiration.
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基金项目:国家自然科学基金项目(41371222)资助
引用文本:
魏瀛珠,赵巧华,欧阳潇然,2014.南疆开都河流域夏季径流量的变化及其特征分析[J].气象,40(3):349-354.
WEI Yingzhu,ZHAO Qiaohua,OUYANG Xiaoran,2014.Variation and Analysis of Summer Runoff over Kaidu River Valley in South Xinjiang[J].Meteor Mon,40(3):349-354.