探空高度与雷达高度的比较研究  

Comparative Study of Radiosonde Height and Radar Altitude

作　　者：赵美 黄文杰 李永 张军 

机构地区：[1]南京市气象局,南京210008 [2]江苏省气候中心,南京210008

出　　处：《气象科技》2012年第6期906-909,共4页Meteorological Science and Technology

基　　金：江苏省青年气象科研基金(Q201211);南京市气象局科研开发项目(NJ200806)资助

摘　　要：利用2009年1月南京探空站L波段高空探测的试验记录,以GPS所测的高度数据作为标准,分别从探空高度和雷达高度作了详细分析。结果表明:探空高度与GPS高度的差值随着探测高度的升高而增大,并且随着高度升高,增大的幅度越快;雷达高度与GPS高度的差值有正有负,随着探测高度的升高,总体上高度差值变大,且差值变化幅度出现较大起伏,其稳定性较差。100hPa以下,探空高度比雷达高度的可信度大,选取探空高度较好;100hPa以上,雷达高度比探空高度可信度大,选取雷达高度较好。Based on the experiment records of L-band radiosonde sounding conducted at Nanjing Station in January 2009, taking the altitude data measured by GPS as the standards, the radiosonde height and radar altitude are analyzed in detail. It is concluded that the difference between radiosonde height and GPS altitude increases with the increasing height. The overall height difference tends to increase with height and the amplitude of the difference fluctuates dramatically. Below 100 hPa, the reliability of radiosonde height is greater than that of radar altitude, which is the best choice; however, above 100 hPa, the reliability of radar altitude is better, though the stability is poor.

关 键 词：L波段雷达 探空高度 雷达高度 GPS高度 

分 类 号：P412.23[天文地球—大气科学及气象学]