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首页> 外文期刊>Advances in Atmospheric Sciences >The energy budget of a southwest vortex with heavy rainfall over south China
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The energy budget of a southwest vortex with heavy rainfall over south China

机译：中国南方多雨的西南涡的能量收支

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摘要

Energy budgets were analyzed to study the development of an eastward propagating southwest vortex (SWV) associated with heavy rainfall over southern China (11–13 June 2008). The results show that kinetic energy (KE) generation and advection were the most important KE sources, while friction and sub-grid processes were the main KE sinks. There was downward conversion from divergent to rotational wind KE consistent with the downward stretching of SWVs. The Coriolis force was important for the formation and maintenance of the SWV. Convergence was also an important factor for maintenance, as was vertical motion during the mature stage of the SWV and the formation stage of a newly formed vortex (vortex B). The conversion from available potential energy (APE) to KE of divergent wind can lead to strong convection. Vertical motion influenced APE by dynamical and thermal processes which had opposite effects. The variation of APE was related to the heavy rainfall and convection; in this case, vertical motion with direct thermal circulation was the most important way in which APE was released, while latent heat release and vertical temperature advection were important for APE generation.
机译：对能源预算进行了分析，以研究与中国南部（2008年6月11日至13日）大雨有关的向东传播的西南涡（SWV）的发展。结果表明，动能（KE）的产生和对流是最重要的KE源，而摩擦和子网格过程是主要的KE汇。从发散风向旋转风KE有向下转换，这与SWV的向下拉伸一致。科里奥利力对于SWV的形成和维护很重要。收敛还是维持的重要因素，在SWV的成熟阶段和新形成的涡旋（涡旋B）的形成阶段，垂直运动也是如此。从可用势能（APE）转换为发散风的KE可以导致强对流。垂直运动通过动态过程和热过程影响了APE，其作用相反。 APE的变化与强降雨和对流有关。在这种情况下，直接热循环的垂直运动是释放APE的最重要方式，而潜热释放和垂直温度对流对于APE的产生很重要。

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