摘要
利用CINRAD/CB雷达产品对通辽地区2007年11月19日一次降雪过程的分析得出:基本反射率因子产品清晰地反映了这次天气过程的开始、发展与结束,可以用来确定降水回波的移动以及未来的趋势;并且通过不同仰角产品的对比可以判断云层的高度、厚度及强度(0.5°仰角产品探测到的云范围要比1.5°、2.4°仰角产品所探测到的大,0.5°仰角产品探测到的云多为低层云系)。速度图产品能够判断大气中的冷暖平流、层结稳定性、某一高度层的风向风速,以及存在的低空急流。对降水过程的预测与监测提供了十分有利的科学依据。
Analysis on the a snowfall process using CINRAD / CB radar products in Tongliao area on November 19, 2007 and get some conclusions： basic reflectivity factor products clearly refected the beginning of the weather process, development and the end, and migration trend of precipitation echo can be determined, and determine cloud height, thickness and strength through contrast different elevation products （0.5 degrees elevation products could detected larger range than 1.5 degrees and 2.4 degrees elevation products, 0.5 degrees elevation products detected the cloud always to be low-level cloud ）. Velocity chart couldjudge cold and warm advection, the stability of stratification, a certain level of wind speed in the atmosphere, as well as the existence of low-level jet. Precipitation process of prediction and monitoring provides very favorable scientific basis.
出处
《内蒙古气象》
2009年第1期18-20,共3页
Meteorology Journal of Inner Mongolia
关键词
地面气旋
切变
反射率因子
低空急流
Ground cyclone
Shear
Reflectance factor
Low-level jet
