In the interface of convergence district and divergence district of Q vector divergence, accompany severe convection precipitation and convection precipitation strengthen following convergence center strength, weaken following divergence center weaken.

• 模拟情况表明在对流层低层Q矢量散度辐合区和辐散区的交界处,伴随有较大的对流性降水,强降水区域轴线走向与Q矢量散度场轴线走向较为一致,对流性降水的强度变化和Q矢量散度场辐合中心强度变化一致。