地理科学 ›› 1993, Vol. 13 ›› Issue (3): 257-267,296.doi: 10.13249/j.cnki.sgs.1993.03.257

• 综述 • 上一篇    下一篇

数值模拟在古气候研究中的应用

刘晓东   

  1. 中国科学院兰州高原大气物理研究所 兰州 730000
  • 收稿日期:1992-01-01 出版日期:1993-05-20 发布日期:1993-05-20
  • 基金资助:
    中国科学院西安黄土与第四纪地质开放研究实验室的资助下完成的

APPLICATION OF NUMERICAL SIMULATION TO PALEOCLIMATIC RESEARCH

Liu Xiaodong   

  1. Lanzhou Institute of Plateau Atmospheric Physics, Academia Sinica, Lanzhou 730000
  • Received:1992-01-01 Online:1993-05-20 Published:1993-05-20

摘要: 通过近十几年来利用大气环流模式对古气候模拟的研究,指出数值模拟方法应用于古气候研究的优点,介绍了对中白垩纪、新生代晚期、末次冰期等几个典型地质时期的数值模拟情况和古气候模拟所取得的主要成果,并展望了数值模拟在古气候研究中的前景

Abstract: Studies of paleoclimate simulated by using general circulation models(GCM) of atmosphere in recent years are summarized and reviewed systematically in this paper. First the advantages of numerical simulation method used in paleoclimate research are pointed out. Numerical calculations can quantitatively show the nonlinear relation-ship between climate and various factors influencing it. Results of numerical simulations can fill the gaps of observaation research in both space and time, that is, sometimes GCM can tell us something about atmosphere behaviour that could not be obtained from observations. The most advantage of the method of numerical simulation lies in its altirnative tests or even null experiment that hopefully clarify how and why the atmosphere behaves under certain physical hypothesis. Such experiments are probably impossible to perform in the actual atmosphere. Then main aspects and achievements of paleoclimate simulation for several typical geological periods (the midcretaceous, late cenozoic, last glacial maximum and since then)are introduced. A series of numerical simulations and experiments made by using different GCMs explore actions of various factors to build up paleoelimate, such as the earth’s s orbital parameters,trace gases in atmosphere and boundary conditions(sea temperature, locations of continents, altitude of mountains, ice sheets, vegetation and so on). These results are undoubtedly very meaning to study and understand deeply the cause and law of climatic change and even to foreshadow the future of climate. Finally the wider vista of numerical simulatin in the area of paleoclimate research is prospected.