摘要
一、引言 自从第一次全国气象技术会议后,苏联的平流动力分析法已开始在国内各预告单位陆续应用起来.中央气象台的预报工作同志在学习苏联的号召下,首先学习平流动力的理论部份,並以“锋生与高空变形场的改变”、“气旋与反气旋的发生与发展”、“变压变高的平流动力理论与应用”等书为主要参考文件,同时,我们在日常天气讨论或预告工作中将学习所得的一些规则结合实况试用.经过了一个时间的学习与摸索阶段之后,我们从19××年×月起就开始每天绘制700毫巴温压场圆了。
In the last year the application of the advective-dynamic analysis of U.S.S.R.has made a definite contribution to the improvement of Chinese weather forecasting.From the last year experience it is found that this method is useful in the following three aspects:(1)judging the formation and development of frontal zone in the westerlies from the conditions in TP-field,(2)forecasting the formation and development of surface cyclone in Mongolia and Northeast China,(3)forecasting the change of upper air pattern in high latitudes over East Asia.Owing to the less frequency of occurence of upper deformation field over the East Asia,the pressure systems encountered in this region are frequently movable.According to our experience the movement of pressure systems is usually regular,provided that there is no blocking system downstream,that the areas of dynamical pressure rise and fall in TP-field are distributed symmetrically on both sides of the trough(or ridge)line,and that there are no indications of the deepening or filling of the trough(or ridge).Under these circumstances,it is comparatively successfuo to estimate the future position of upper pressure system by extrapolation.
作者
陶诗言
廖洞贤
Dao Shih-yen;Liao Tung-hsien
出处
《气象学报》
1954年第4期233-251,319-332,共33页
Acta Meteorologica Sinica
