摘要
使用2005年7月6～10日各层(850、700、500hPa等)天气图资料、有关物理量场资料、FY2卫星云图、十堰714C天气雷达回波资料,采取天气诊断分析方法,对2005年7月6～10日发生在十堰市境内的一次单站暴雨和一次区域性暴雨作了对比分析。结果表明:单站暴雨是在副热带高压稳定少动的形势下发生的,单站暴雨发生时,切变线及低涡700hPa始终偏北于850hPa,低空没有急流配合;区域性暴雨是在副热带高压东退南压比较显著的形势下发生的,区域性暴雨发生时,中尺度低涡及切变线接近重合,低空有强劲的西南急流与高层的西风急流配合。
By using the synoptic map data of different levels（850 hPa, 700 hPa, 500 hPa）, the related physical fields data, FY-2 satellite cloud map data and 714C radar echo data, the comparative analysis have been conducted between the single-station heavy rain and the regional heavy rain occurring during 6-10 July 2005 by the synoptic diagnostic analysis method. The results that the single-station heavy rain occurred when the Subtropical High was stable, the shear line and low vortex at 700 hPa level was more north-slanted than at 850 hPa, and no jet existed at the low level to match with. The regional heavy rain occurred when the Subtropical High made the significant motion in the east and south direction, the meso-scale low vortex is overlapped with the shear line and the strong southwest jet at the low level matched with the west wind jet at the high level.
出处
《暴雨灾害》
2007年第1期57-62,共6页
Torrential Rain and Disasters
关键词
单站暴雨
区域性暴雨
中尺度系统
物理量场
卫星云图
雷达回波
Single-station heavy rain
Regional heavy rain
Meso-scale system
Physical field
Satellite cloud map
Radar echo
