摘要
本文用车贝雪夫多项式分解了15—65°N、75—155°E范围内,1954—1975年逐候500毫巴等压面位势场。求出车贝雪夫的一些主要系数,讨论了这些系数的物理意义及其与我国温度、降水的关系。主要结果有:1.表示大气经、纬向环流的车贝雪夫系数A_(10)、A_(01)与我国温度等级十年滑动平均和各地月平均温度存在相关关系。此关系的存在为温度趋势预报提供了可能性。2.表示平均高度的A_(00)系数冬季12月的值和A_(10)系数冬季1月的值,两者组合成的复相关表为长江中、下游汛期(5—8月)降水趋势预报提供了可能性。用复相关表的结果,有三年做过长江中、下游汛期降水趋势预报,其结果与实况基本一致。
In this article the 500mb height of each pentad in the period 1954-1975 in the area 15-65°N,75-155°B are resolved with Ghebyshev Polynomials.Some main coefficients are obtained,the physical explanation of these coefficients as well as the relationships of these coefficients with temperature and rainfall in our country are discussed.The main results are as following:1.The coefficients A_(10),A_(01)which express the meridional and zonal circulation of atmosphere are correlated with the 10-year running means of temperature grade and monthly average temperature of all parts of our country.This correlation make it possible to forecast the tendency of temperature.2.A multicorrelation table,formed by the December coefficient A_(00)which expresses average height and January coefficient A_(10)in same winter is a possible tool for forecasting the tendency of rainfall in coming the rainy season(May-August)of the middle and Lower Reaches of Yangtze.Good results have been obtained in three-year applications.
作者
陈玉琼
王才芳
Chen Yu-qiong;Wang Cai-fang(Academy of Meteorological Science,Central Meteorological Service)
出处
《气象学报》
1980年第3期227-233,共7页
Acta Meteorologica Sinica
