upper cloud

By employing the actual observations of upper air and surface, NCEP reanalysis data and FY-2C satellite cloud image, by using the methods of mesoscale Barnes filtering and physical diagnosis, 'MATSA' is analyzed.

利用地面和高空的实况观测资料、NCEP再分析资料以及FY-2C卫星云图资料，并通过中尺度Barnes滤波和物理量诊断分析，对麦莎台风变性过程进行了研究。

Main movements include twining head, straight-arm raise , thrust, cloud, upper cut, drag and chop.

常见动作有:缠头裹脑、刺刀 、 劈刀 、 撩刀 、 云刀 、 带刀.

And its trigger condition is cold air near ground join warm air, then develop a MCC by several small scale convective cloud under condition of upper and low level jet 、 stratification instability 、 etc.

其触发机制是冷空气从近地层楔入暖空气中，在高、低空急流、层结不稳定等诸多有利条件下，由几个小尺度对流云团合并发展成1个中尺度对流复合体（MCC）。