| 东北地区渍涝风险气象等级预报 |
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| 引用本文： | 王扬锋,陆忠艳,马雁军.东北地区渍涝风险气象等级预报[J].江西农业大学学报,2009,31(5). |
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| 作者姓名： | 王扬锋 陆忠艳 马雁军 |
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| 作者单位： | 1. 中国气象局,沈阳大气环境研究所,辽宁,沈阳,110016
2. 辽宁省气象台,辽宁,沈阳,110016 |
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| 基金项目： | 2008年公益性行业气象科研专项，2009年中国气象局项目 |
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| 摘 要： | 为满足天气预报中对渍涝灾害预报的要求,利用东北地区1: 100万DEM基本地形数据,以GIS为平台分析研究区域的水流方向和汇流能力栅格,对SCS(Soil Conservation Service)-Curve Number径流预报模型进行本地化调试,应用降水量预报和汇流能力栅格,通过耦合得到实际地形的汇流量;将汇流量转化为径流深,根据径流深和渍涝等级对应关系发布渍涝风险气象等级预报,并在一次天气过程中进行试报,预报结果和实况比较吻合.
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| 关 键 词： | 水流方向 汇流能力 SCS水文模型 渍涝预报 |
Waterlogging Forecast in Northeast Area of China Base on DEM |
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| WANG Yang-feng,LU Zhong-yan,MA Yan-jun.Waterlogging Forecast in Northeast Area of China Base on DEM[J].Acta Agriculturae Universitis Jiangxiensis,2009,31(5). |
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| Authors: | WANG Yang-feng LU Zhong-yan MA Yan-jun |
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| Abstract: | To meet the requirements of waterlogging in weather disaster forecast. Using 1:1 000 000 scale DEM basic topographic data in the Northeast area of China, based on the platform of geographic information system ( GIS) , the direction of water flow and the grid of convergence capacity were analyzed. SCS hydrology model was debuged, runoff model and converge ability were coupled, the runoff on Iiaoning terrain was obtained. According to the parallelism between converge and waterlog grade, the waterlog risk meteorological grades were obtained. In flood seasons the waterlogging forecast was applied, the result showed that the forecast and actual condition are consistent. |
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| Keywords: | DEM |
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