| 非绝热加热及地形动力作用下的大气环流长期演变过程 |
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| 引用本文： | 陈雄山.非绝热加热及地形动力作用下的大气环流长期演变过程[J].气象学报,1964,34(3):271-284. |
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| 作者姓名： | 陈雄山 |
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| 作者单位： | 中国科学院地球物理研究所 |
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| 摘 要： | 本文建立了一个理想的大气环流数值试验模式,其中简单地考虑了辐射、湍流、凝结加热及地形的动力作用。模式中放了两个陆地和两个海洋,海陆的影响由给定的下垫面温度表现出来。把方程组化成常微分方程组后,用Runge-Kutta方法在电子计算机上求数值解。 首先,在非绝热加热的作用下,由静止大气开始经过40天就建立起基本气流。其次,在具有年周期的太阳辐射、下垫面温度及凝结加热的作用下,基本气流以年周期变化。扰动也有明显的年周期,夏季扰动振幅变小,冬季扰动振幅变大,而且海陆温度的季节变化能控制波数为2的超长波的进退。夏季温度槽位于海洋东部,冬季位于大陆东部。 最后,在数值试验中看到初始场的影响只有100天左右。
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| 收稿时间： | 1963/12/11 0:00:00 |
THE LONG-RANGE PROCESS OF THE GENERAL CIRCULATION OF THE ATMOSPHERE UNDER THE INFLUENCES OF NON-ADIABATIC HEATINGS AND THE DYNAMIC EFFECT OF OROGRAPHY |
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| CHEN YUNG-SAN.THE LONG-RANGE PROCESS OF THE GENERAL CIRCULATION OF THE ATMOSPHERE UNDER THE INFLUENCES OF NON-ADIABATIC HEATINGS AND THE DYNAMIC EFFECT OF OROGRAPHY[J].Acta Meteorologica Sinica,1964,34(3):271-284. |
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| Authors: | CHEN YUNG-SAN |
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| Institution: | Institute of Geophysics and Meteorology, Academia Sinica |
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| Abstract: | An ideal numerical experimental model of the general circulation of the atmosphere is constructed with simple considerations of the radiation,turbulence exchange and condensation heatings andorographic effect. The effects of ocean and continent are presented by giving the earth's surface temperature.The derived ordinary differential equatons are numerically integrated oa electronic computer by Runge-Kutta method.Starting with an atmosphere in rest, the basic current is established by the effects of non-adiabatic heatings in 40 days.The basic current has the annual variation under the influences of solar radiation, earth's surface temperature and condensation heatings, all with an annual period. The amplitudes of disturbances decrease in summer, and increase in winter. The seasonal variation of earth's surface temperature controls the movements of ultra-long waves. The cold troughs are situated at the east of oceans in summer, and at the east of continents in winter.Finally, we find in the numerical experiment that the influence of initial values may last for about 100 days. |
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