杭州L波段和59-701高空探测系统资料对比分析

Comparative Analysis of Data between L-Band and 59-701 Upper-Air Sounding Systems in Hangzhou

为比较L波段高空探测系统和59-701高空探测系统的资料异同,采用平均差、均方差比较的方法分析了杭州站平行观测一个月资料的温压湿资料,比较其异同及产生原因,为更好利用高空探测资料、改进L波段高空探测系统提供参考。通过比较发现:L波段高空探测系统比59-701高空探测系统所测的温度、高度资料更稳定、离散率更小,对提高预报准确率有利。两套系统的温度差值在70 hPa层出现明显拐点,其原因有待进一步研究。

In order to compare the difference between L-band and 59-701 upperair sounding systems, an analysis is made of the temperature, pressure, and humidity data of Hangzhou for a whole month by mean of the deviation and mean square deviation methods. The results indicate that compared with the 59-701 sounding system, the temperature and height data from the L-band sounding system are more stable and less discrete, which is favorable to the improvement of weather forecasting. There exists a distinct inflexion point at 70 hPa in temperature difference between the two sounding systems, and the reason remains to be studied further.