L波段与59-701系统高空对比观测资料特征分析

Characteristic Analysis of Observation Data of the Contrast between L-Band and 59-701 Upper-Air Sounding Systems

选择喀什探空观测站10个位势等压面上的高度、气温、露点L波段雷达探空系统与59-701雷达探空系统对比观测资料进行分析,结果表明,两种仪器的露点差异最大,而且随高度增加而增加。对各时段高度、气温、露点观测资料进行u检验也表明,L波段与59-701雷达探空高度和气温观测资料无显著性差异,属于同一气候序列;而部分露点值没有通过检验。另外,气温观测值的离散性相对较大,各位势层高度、气温、露点观测值的离散性19时比07时大,低空比高空大。两种仪器在各等压面上的气温值有一定差异,这种差异在大气对流活跃时尤为突出。

In order to contrast the difference between L-band and 59-701 upper-air sounding systems, the altitude, temperature and humidity data at 10 isobaric surfaces, observed from Kashi sounding station were analyzed,and the results indicate the diversity of dew-point in the two instruments is the most and which increase with the high increment. The altitude and temperature have no significant diversity from two different systems in term of u test for the altitude, temperature and dew-point observing data in each time and they belong to the same climate series, moreover, some dew-point does not pass the test. In addition, the dispersion of temperature is bigger relatively. At each isobaric surface, the dispersion of altitude, temperature and dew-point at 19 is bigger than that at 07, and that in low level is bigger than in upper air. There is a certain extent difference for the temperature at each isobaric surface, and the difference is most when the convection is active.