不同地转速度下的冬季大气环流及气候异常的数值模拟  

A Numerical Simulation of the Atmospheric Circulation and Climate Anormaly with Different Earth Rotation Rates in Winter

作　　者：游性恬[1] 谷湘潜[2] 

机构地区：[1]中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室 [2]兰州大学大气科学系

出　　处：《大气科学》1997年第5期545-551,共7页Chinese Journal of Atmospheric Sciences

基　　金：国家自然科学基金

摘　　要：利用ＩＡＰ二层全球大气环流模式，进行改变地球自转速度下冬季大气环流及气候异常的数值模拟。其中试验１：设２５ｈ／ｄ（３５０ｄ／ａ）；试验２：设２３ｈ／ｄ（３８１ｄ／ａ）；控制运行：２４ｈ／ｄ（３６５ｄ／ａ）。联系从古至今地球自转逐渐减慢的情况，主要讨论地转减慢对冬季大气环流和气候的影响。结果表明，地球自转速度减慢以后，能使西风急流加强，南极附近增温。A numerical experiment is conducted by an IAP AGCM, to simulate the atmospheric circulation and climate anormaly with the different earth rotation rates (ERR) in winter This experiment induces a control run and two tests In the control run, a day is considered to be 24 hours (or a year has 365 days) In the first test, a day is supposed to be 25 hours (or one year has 350 days) And in the second test, a day is assumed to be 23 hours (or a year has 381 days) Considering that the ERR slows gradually from ancient to present, the slower ERR is also discussed in details The results show that the slower ERR induces can intensify the westerly jet in the Northern Hemisphere and leads to a warming in high latitudes of the Southern Hemisphere

关 键 词：地球自转速度 大气环流 数值模拟 气候异常 

分 类 号：P434[天文地球—大气科学及气象学] P435