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首页> 外文会议>30th International Conference on Radar Meteorology, Jul 19-24, 2001, Munich, Germany >SQUALL LINE TRANSFORMATION FROM ASYMMETRIC-TYPE TO SYMMETRIC-TYPE
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SQUALL LINE TRANSFORMATION FROM ASYMMETRIC-TYPE TO SYMMETRIC-TYPE

机译：从不对称型到对称型的线变换

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摘要

In this study, we showed the results from the analysis of 8 MCS that presented SLs with triangular SR. It was showed that the SR constituted the area where, during few hours, deep convective clouds had developed, i.e. the SR was the "memory" about the passed evolution of the SL. The shape of the SR depends on the relation between the perpendicular component Ve(per) and the parallel component Ve(par) of the evolution velocity of the SL. If Ve(per) is greater than Ve(par), the SL will correspond to the symmetric-type. On the contrary, if Ve(per) is smaller than Ve(par), the SR will present a triangular shape, corresponding to the asymmetric-type SL. Therefore, if the relation between Ve(per) and Ve(par) changes during the life time of the MCS, we will observe the transformation of the SL from one type to another as many times as the relation between these two components changes. The analysis of 8 asymmetric-type SLs showed that the mean values of the parallel component Ve(par) were twice time bigger the perpendicular component Ve(per). The mean duration of the triangular shape of the SR was 2,3 +- 0,5 hours. The agreement between the observed angles of the triangular SR and the calculated angles, in according to the equation (1), was very good.
机译：在这项研究中，我们显示了对8种MCS的分析结果，这些MCS给出了具有SR的SR的SL。结果表明，SR构成了几个小时内形成深对流云的区域，即SR是SL过去演化的“记忆”。 SR的形状取决于SL的演化速度的垂直分量Ve（per）和平行分量Ve（par）之间的关系。如果Ve（per）大于Ve（par），则SL将对应于对称类型。相反，如果Ve（per）小于Ve（par），则SR将呈现三角形形状，对应于不对称类型SL。因此，如果在MCS的生命周期中Ve（per）和Ve（par）之间的关系发生变化，则我们将观察到SL从一种类型转换为另一种类型的次数是这两个组件之间的关系变化的次数。对8个非对称型SL的分析表明，平行分量Ve（par）的平均值是垂直分量Ve（per）的两倍。 SR的三角形的平均持续时间为2.3±0.5小时。根据等式（1），三角形SR的观察角度与计算角度之间的一致性非常好。

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