邬鸿勋,陈隆勋. 1956. 1956年1月到3月上旬亚洲上空大气环流的结构[J]. 气象学报, 27(4):361-381, doi:10.11676/qxxb1956.026
1956年1月到3月上旬亚洲上空大气环流的结构
THE STRUCTURE OF GENERAL CIRCULATION OVER CONTINENT ASIA DURING JANUARY-MARCH, 1956
投稿时间:1956-08-19  
DOI:10.11676/qxxb1956.026
中文关键词:  
英文关键词:
基金项目:
作者单位
邬鸿勋 中国科学院地球物理研究所 
陈隆勋 中国科学院地球物理研究所 
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中文摘要:
      根据1956年1月到3月上旬亚洲地区高空资料,对亚洲大陆上空的大气环流进行了探讨。作者得出了下列的事实:1)在上述时间期限内的平均情况表明,亚洲大陆上空存在着二支急流。这二支急流在东经140°经度上已经汇合。2)二支急流在东亚部分都表现有向东加速的现象。南支急流自东经75°就开始明显地向东加速。而北支急流的加速自东经100°附近才开始。3)东亚大陆上大气的斜压性主要是集中在高原的附近。另外对上述现象也作了一些初步的研究。作者认为西藏高原的存在对大气环流有下列三方面的影响:1)高原加强了大气的斜压性,并且在高原南方形成垂直环流。因而强烈的加速了南支急流。2)高原的存在使得南北二支急流在其东侧互相接近,显然地影响了急流的加速。3)高原保证了南支急流强大而且稳定,这就是说每天每年同季的变化都小。
英文摘要:
      The structure of general circulation over the Asia.,in the period of Jan.1st.to Mar.10th.,1956,is investigated using all available aerological.material.It is found that:1.During this period there existed two jet streams over the continent.This two jets combined into one jet at the meridian 140ºE.2.Both jets over Easters Asia are accelerated downstream.The southern one starts acceleration from the meridian 75ºE,while the northern one was not accelerated before reading the meridian 100ºE.3.The baroclinity of the atmosphere over Eastern Asia is mainly concentrated in the vicinity of the Tibetan Plateau.It is considered that the existence of the Tibetan Plateau has the following three effects on the general circulation:1.The existence of the plateau intensifies the baroclinitp (along the N-S as well as W-E directions) around the plateau,south of which a vertical circulation is formed.2.The confluence of the two jets,thus also the acceleration of them,is due to the existence of the plateau.3.The existence of plateau makes the southern jet intensified and steady.
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