Combined with the analysis of physical parameters, two kinds of conceptual models of typical regional heavy rainstorm systems about strong frontal zone and warmvortex are found.
结合物理量场的分析，建立了强锋区和暖涡旋两类典型特大暴雨系统的概念模型。
2
Tornadoes form when the updrafts of air that supply storms with warm, humid air become a vortex, or high-speed whirlwind.
当上升气流与能形成风暴的湿热空气变成高速的旋风时，就形成了龙卷风。
3
For example, a non-geostrophic vortex in wind field on the 375 MB level can result in a high with the warm center in the troposphere and the cold center in the stratosphere.