高空西风带环流演变综合图及其功用

COMPOSITE CHART FOR THE VARIATION OF UPPER WESTERLIES AND IT’S USAGE

中文摘要:

      本文先略述苏联与我国过去对大气环流的研究状况,及其重要性.过去研究环流偏差的问题,常以月平均高空图及地面图对准平均图的偏差状况来讨论,如苏联坡戈香(Х.П.Погосян)也是如此^**.但月平均图对该月的详细环流演变过程不能表示出来.本文设计用一种环流综合图,以求表示长时期中(月或季)高空西风带内环流演变的具体情况.采用七种符号,来表示逐日各经线上环流系统的性质及气流的运动.并把西风带分为南北两部分来处理,北带从北纬50°到65°,南带从北纬35°到50°.这样在一个月内逐日西风带环流的演变,就可以在同一张图上表示出来.

英文摘要:

      In the study of the circulation anomalies the mean monthly charts are ordinarily the main working tools. But, it is obviousthat on these mean charts the process of evolution can not be revealed in detail. In this paper a kind of composite chart is suggested to represent the actual variations of the upper westerlies for certain long period of time (month or season).On the composite chart the ordinate is the time and the abscissa, the longitude along certain latitude belt. Seven symbols to denote the different states of the upper circulation in the chosen latitude belt.are plotted in the chart and analyzed. The day to day variation of the upper circulation may then be studied in one chart.