摘要
本文从拉格朗日平均环流观点讨论了行星波对大气中Ｏ３。的输运作用。理论分析表明，当行星波是定常保守时，行星波对大气中Ｏ３没有输运作用；而非定常的行星被对大气中ｏ。有明显的输运作用，它可以强迫出一个正的输运环流、即从热带上升，而从高纬下沉的环流；此外，只有当耗散的行星波传播到平流层才会在平流层强迫出输运环流。为了说明行星波对大气中Ｏ３输运的动力作用，本文还利用一组３４层波－流相互耦合球坐标原始方程谱模式计算了地球大气中行星波对Ｏ３变化的作用，其计算的Ｏ３变化与实际观测到的Ｏ３分布变化很相似。
The transport effects of planetary waves are studied theoretically with the Lagrangian mean circu lation forced by planetary waves. The results show that there is no planetary wave transport when hewaves are steady.and conservative, but the transport effects of dissipative planetary waves are yi:rystrong, it can bring out a positive transport circulation which rises in the tropical region and sink, inhigh latitudes area. Moreover, the dissipative planetary waves can cause the transport circulation in hestratosphere only when it propagates into the stratosphere.In order to show the effects of planetary wave transport on ozone, a 34-level coupled planetarywave-zonal flow, global primitive equation model is used to calculate the variation of ozone. The results give the similar variation of ozone as the observed one.
出处
《大气科学》
CSCD
北大核心
1995年第5期513-524,共12页
Chinese Journal of Atmospheric Sciences
关键词
臭氧
行星波
拉格朗日环流
大气
动力作用
ozone
planetary waves
Lagrangian mean circulation
Eulerian mean circulation.
