地理科学 ›› 1983, Vol. 3 ›› Issue (4): 303-309.doi: 10.13249/j.cnki.sgs.1983.04.303

• 论文 • 上一篇    下一篇

南极冰雪与气候的若干联系

彭公炳, 司有元   

  1. 中国科学院地理研究所
  • 出版日期:1983-07-20 发布日期:1983-07-20

SOME RELATIONSHIPS BETWEEN ANTARCTIC ICE EXTENT AND CLIMATE

Peng Gongbing, Si Youyuan   

  1. Institute of Geography, Academia Sinica
  • Online:1983-07-20 Published:1983-07-20

摘要: 气候受大气中长期物理过程的制约,而且总是与具体的自然地理环境相联系。因此,在研究气候演变规律时,既要分析制约它的物理过程,又要考察孕育它的自然地理条件;气候学中往往将后者称作下垫面。下垫面在气候形成和演变中的作用早已为人们所注意,但本学科的不同发展阶段对下垫面的含义和研究深度是不同的。经典气候学只注意不同地形、土壤和植被条件对气候的影响。近卅年来已将海洋看作下垫面的重要组成部分。

Abstract: The authors have revealed some facts that show the relationships between the climate and the Antarctic ice extent,and proceeded some analyses and discussions.As for the correlation coefficient,there are closer relationships among the Antarctic ice extent,the exponents of atmospheric circulation and the air temperature of China.While the zonal circulation of Northern Hemisphere becomes strong,the active centers of atmosphere over the world move to south,the subtropical anticyclones of Southern Hemisphere and the cyclonic system near the Antarctic move to south too;correspondingly,the Antarctic ice-snow cover increases.In this case,it is colder in the northeast of China and warmer in the south of China,and vice versa. Ice and atmosphere interact on each other.The atmospheric circulation restricts the climate and ice-snow cover of different regions.However,the variation of ice-snow cover causes the modification of cold source in the atmosphere and that of temperature field;the latter,in turn,leads to the variation of pressure field and finally results in the variation of atmospheric circulation and climatic characteristics of different regions.