中国部分地区0℃等温层高度的统计特性  

Statistic Characteristics of the 0℃ Isotherm Height over Some Regions in China

作　　者：黄捷[1] 胡大璋[1] 仇盛柏[1] 

机构地区：[1]中国电波传播研究所

出　　处：《电波科学学报》1993年第1期57-64,共8页Chinese Journal of Radio Science

摘　　要：在地—空斜路径雨衰减预报中雨顶高度是个重要参数。由于雨顶高度研究困难较大,通常把0℃等温层高度近似为雨顶高度。我们利用中国31个地区十年(1970—1979年)的无线电探空资料,对我国部分地区0℃等温层高度进行统计。通过统计分析得到中国部分地区0℃等温层高度与纬度的线性回归关系及它与地面平均温度的线性回归关系式。本文还给出了粗略的中国0℃等温层高度在夏季及全年的分布等值线图。最后,文章对0℃等温层在地—空斜路径雨衰减中应用进行了研究。The rain height is an important parameter in the prediction of rain attenuation along the Earth—Space path.Generally,The 0℃ isotherm height is approximately taken as the rain height. A detailed investigation of the statistical characteristics of the 0℃ isotherm height using ra- diosonde data at 31 stations in China has been carried out in connection with the prediction of rain attenuation along the Earth—Space path.The statistical relations between the 0℃isotherm height and latitute and the between it and ground temperature are presented.Annual and summer season contours of the 0℃ isotherm height in China are given.Finally an application of rain atten- uation along Earth—Space path is investigated.

关 键 词：等温层 高度 雨衰减 降水 预测 

分 类 号：P457.6[天文地球—大气科学及气象学]