SWAN系统雷达定量降水估测产品在江西的应用  

THE APPLICATION OF RADAR QPE(QUANTITATIVE PRECIPITATION ESTIMATION) PRODUCTS OF SWAN SYSTEM IN JIANGXI

作　　者：李俊[1] 支树林[1] 郭艳[1] 张瑛[1] 盛志军[1] 洪浩源[1] 王欢[1] 

机构地区：[1]江西省气象台,江西南昌330046

出　　处：《气象与减灾研究》2012年第2期61-66,共6页Meteorology and Disaster Reduction Research

基　　金：中国气象局气象新技术推广项目(编号:CMATG2010Z02)子项目"SWAN系统QPE和QPF模块在江西的应用和效果检验"

摘　　要：利用SWAN1.0系统对江西省2010年1—7月的25次降水过程进行反算。结果表明,雷达定量降水估测(QPE)产品在江西省的主汛期(4—7月)应用效果要好于非主汛期,QPE产品的1 h雨量值比实际观测值要小,偏差大约20%;对3块小流域的QPE检验,其中2块小流域的QPE产品误差与全省范围的误差差别很小,QPE对小流域短时中阵雨以上量级的降水具有较高可靠性。依据检验工作的结果,开发出的QPE修正产品可以作为江西省短时临近天气预报业务使用。SWAN1.0 system is employed to reversely calculate 25 precipitation processes in Jiangxi Province from January to July in 2010, some effect verification results of its QPE products are concluded. It found that the QPE products are more accurate in main flood season than in other period, and the one-hour rainfall of the QPE products is 20% smaller than the actual one. The relative error of QPE products for the two of three small watersheds is slightly different to those for the whole Jiangxi province. For the small watersheds, the QPE products are more reliable for the condition with rainfall above moderate shower. Based on the above results, new corrected QPE products can be used for the short-term weather forecast in Jiangxi.

关 键 词：SWAN系统 QPE 效果检验 

分 类 号：P426.6[天文地球—大气科学及气象学]