基于FY-2G静止气象卫星资料的对流初生预警  

Convective initiation forecasting based on FY-2G geostationary satellite data

作　　者：卜茂宾 白洁[2] 周著华[2] 方涵先 Bu Maobin;Bai Jie;Zhou Zhuhua;Fang Hanxian(National University of Defense Technology,Changsha 410000;Aeronautical Meteorology Chemical Defense Study of Air Force Equipment Research Institute,Beijing 100085)

机构地区：[1]国防科技大学,长沙410000 [2]空军装备研究院航空气象防化研究所,北京100085

出　　处：《气象水文海洋仪器》2018年第1期8-13,共6页Meteorological,Hydrological and Marine Instruments

摘　　要：文章基于FY-2G静止气象卫星数据和Mecikalski等人提出的八分法,利用多小波融合、积云掩膜、金字塔图像和面积重叠法得到了对流初生预警算法。根据FY-2G静止气象卫星和GOES静止气象卫星在分辨率以及八分法研究区域上的差别,通过一系列实验对对流初生预警指标和其阈值进行调整和修改。并对北京地区的两次强对流天气过程进行对流初生预警研究,所得预警结果与多普勒天气雷达进行对比验证分析。其结果表明:对流初生预警算法能够提前30~40min预警出北京地区的对流初生过程,说明了算法的可行性和有效性,为短时灾害性天气的预警提供理论支持。Based on the eight-point method by Mecikalski and so on and the FY-2G geostationary satellite data,the convective initiation forecasting methods are being obtained by using multi-wavelet fusion,CCM technology,pyramidal matcher and area-overlapped method.The indicators from convective initiation forecasting and its thresholds have been modified by a series of experiments because of the differences of resolution and study areas between the FY-2G and GOES geostationary meteorological satellite.Then,two convective weather events in Beijing regions are studied in the convective initiation forecasting.The comparative analysis is taking out between forecasting results and Doppler weather radar,which shows that the convective initiation forecasting method would forecast convective initiation process30-40min ahead in Beijing regions,indicating the effectiveness and feasibility of the algorithm and providing theoretical support for short-term catastrophic weather warnings.

关 键 词：强对流天气 对流初生预警 FY-2G卫星资料 

分 类 号：P405[天文地球—大气科学及气象学]