convergence line

The large scale circulation situation, mesoscale convergence line and orographic action provided advantage condition for local large heavy rain.

在大尺度环流形势下，中尺度辐合线和地形作用为局地大暴雨提供了有利条件。

Surface Convergence Line and Precipitation Area Forecast of Heavy Convective

地面辐合线与强对流天气落区

A mesoscale convergence line with some features of mini-cold front was a main system which caused the heavy rain.

发现一个具有微冷锋特徵的辐合线是造成这次暴雨的主要中系统。

The eastern rain-belts are closely related with low level flow convergence line.

相对多雨带与低层流场辐合线有很好的对应关系。

It comes on with some mesoscale system, such as mesoscale convergence line wind shear, gale area and so on.

强对流天气在速度场上表现为中尺度辐合线、风向风速辐合区、风速辐合区、大风区等中尺度系统。

Results show, it is the principle influencing systems that the upper trough, surface convergence line, The low level southwest jet and shear line.

分析结果表明，高空南支槽、地面辐合线、850hPa西南急流和切变线，是这次强对流天气过程的主要影响系统；

The large scale circulation situation, mesoscale convergence line and orographic action provided advantage condition rain.

在大尺度环流形势下, 中尺度辐合线和地形作用为局地大暴雨提供了有利条件.

The axes of low-layer helicity plus center is concurrent with shear line and the convergence line of surface inversion trough.

低层螺旋度大值中心轴线与切变线和地面倒槽辐合线走向一致，高层螺旋度与高空急流有关。