夏季青藏高原低涡的能量场分析

本文采用视热源方程，视水汽汇方程，扰动能量方程和涡度方程对1979年6月的三次低涡进行了分析和研究，得到了以下结论：在低涡生成和发展过程中，积云和乱流引起的总热量的垂直涡旋输送很大。当大气处于条件不稳定时，γs＜γ＜γα，积云和乱流的这种输送结果，使得低涡的正涡度增长上升到较高层次；另外，积云和乱流对总热量的垂直涡旋输送使得低涡内扰动有效位能增加，然后向扰动动能转换，使低涡得以生成和发展。

Energy Analyses of Vortices over the Qingzang Plateau in Summer

Three vortices, which happened over the Qinghai-Tibet Plateau in June of 1979, are estimated in this paper by using apparent heat source equation, apparent moist sink equation, perturbation energy equations and vorticity equation. During the genesis and development process of the vortices, the vertical eddy transport of total heat (sensible heat and latent heat) caused by cumulus and turbulence is very important. When the atmosphere is conditional instability, the eddy transport by cumulus and turbulence makes the layer of the increment of vortices absolute vorticity higher. In addition, the eddy transport of total heat makes disturbance effective potential energy increase and then it is transformed into disturbance kinetic energy. Thus, the vortices will generate and develop.