重庆辐射雾的声雷达回波与大气污染特征  

CHARACTERISTICS OF THE ECHO WAVES OF RADIATION FOG AND THE ATMOSPHERIC POLLUTIONS IN CHONGQING

作　　者：但尚铭[1] 陈国学[1] 

机构地区：[1]四川省气象科学研究所

出　　处：《成都气象学院学报》1996年第43期278-284,共7页

摘　　要：结合气象观测和大气边界层探测资料，分析了１９９０年１月２日重庆雾的声雷达回波特征，并与１９８９年１２月３０日雾的回波作了比较。结果表明，雾顶回波高度与逆温和相对湿度的转折高度一致；雾顶回波在雾的成熟期呈现波动，在消散期有一下降过程。上午大气污染物地面浓度的变化与逆温混合层状况有密切关系，混合层较薄且持续时间较长时。By means of the observation and boundary layer data,the characteristics of the echo waves of radiation fog in Chongqing on January 2,1990 are studied and compared with that on December 30,1989.The results show that the height of the fog top echoes is the same as that of the inflection of the inversion layer and relative humidity.The fog top echoes wave vary in its mature stage and descend in its dissipated stage.The concentration changes of the air pollutants on the earth surface are closely ralated to the condition of the mixed layer under the inversion in the morning:the thinner the mixed layeris and the conger the duration is,the higher the surface concentraction is.

关 键 词：大气边界层 辐射雾 空气污染 声雷达回波 

分 类 号：X511[环境科学与工程—环境工程]