Some low layer fields along Meiyu front,such as convergence,front intensity,deformation and southerly wind,show evident mesoscale orographic features and with significant daily variation.

• 梅雨锋的低层特性,如辐合、锋区强度、总变形和南风分量及降水强度等要素呈现显著的中尺度扰动特征,有明显的日变化且受长江中下游中尺度地形影响,扰动特征有随时间上传的趋势。