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机构地区:[1]民航河南空管分局,河南郑州451161 [2]云南大学资环学院,云南昆明650091 [3]上海航空股份公司运控中心,上海200335
出 处:《云南大学学报(自然科学版)》2009年第S2期443-450,共8页Journal of Yunnan University(Natural Sciences Edition)
摘 要:2007年8月2日9时至11时,郑州市区遭遇了入夏以来最强的一次突发性大暴雨天气,造成了人员伤亡和巨大的经济损失.对此次暴雨发生和发展过程中卫星云图的红外、水汽图像和多普勒天气雷达探测产品进行了综合研究.分析表明:这次大暴雨是一次典型的中尺度强对流天气过程,云图图像从宏观上能够较好地显示出中尺度天气系统的变化过程,并对天气现象的反映有提前性,对暴雨天气的临近预报有很好的指示意义;多普勒雷达资料弥补了卫星云图时空分辨率的不足,揭示了此次中尺度暴雨系统的移动、发展和高时空分辨率的微观特征.通过对此次暴雨特征的总结,把卫星云图和雷达回波结合起来从直观特征上为以后此类中尺度暴雨的临近预报提供借鉴,以期加强对暴雨的监测预警和防御能力.On August 2,2007,the Zhengzhou urban district suffered a most heavy rainstorm weather since the beginning of summer from 09:00 am to 11:00 am,causing casualties and huge economic losses.In this paper,the infrared satellite images,water vapor images and Doppler weather radar data about the occurrence and development of rainstorms had been studied comprehensively.Analysis showed that:the rainstorm was a typical mesoscale convective weather process,cloud image could better demonstrate the change process of the mesoscale weather system from the macro level,reflected the advance of weather phenomena,and was a good indication to nowcasting of rainstorm;Doppler radar data made up for lack of spatial and temporal resolution satellite images,revealed the mobile,development,and micro-features of high spatial and temporal resolution of this mesoscale rainstorm system.Through the summary of the characteristics of rainstorm,provided reference for the future of such nowcasting mesoscale heavy rainstorm by combined the satellite imagery and radar data,with a view to strengthening the monitoring of rainstorm warning and defense capabilities.
分 类 号:P458.121.1[天文地球—大气科学及气象学]
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