宁夏北部夏季高温、暴雨环流特征及预报技术的研究

高温、暴雨是宁夏北部夏季常见的灾害性天气,利用石嘴山市4个气象站2000—2010年夏季6—8月份日极端最高气温≥35℃的高温天气、5—9月份12 h降水量≥30 mm或24 h降水量≥50 mm的暴雨天气个例进行统计分析,概括出造成宁夏北部高温、暴雨灾害天气的成因以及环流特征.得出了石嘴山市夏季高温、暴雨预报着眼点及预报产品指标,为今后高温、暴雨天气的预报预警提供科学依据.

Research on circulation characteristics of summer high temperature and the rainstorm in northern Ningxia and the research on forecast technology

High temperature and the rainstorm is common severe weather in north of Ningxia in summer.In this paper,air temperature and precipitation data of four weather stations of Shizuishan from June to August of summer during 2000 to 2010,is used to analyze the maximum temperature which is greater than or equal to 35 ℃,amount of precipitation in 12 hours which is greater than 30 millimetres or amount of precipitation in 24 hours which is greater than 50 millimetres.At the same time,the cause and circulation characteristics are recapitulated.The target of summer high temperature and rainstorm forecast in Shizuishan and the index of forecast products are educed,which are scientific basis for the forecasting and early warning prediction of high temperature and rainstorm in the future.