强对流暴雨与高空强迫作用

SEVERE CONVECTIVE HEAVY RAIN AND UPPER-AIR FORCING

摘要:

当高空辐散区东移并叠加在低层辐合区的上空时,整个对流层出现了强对流活动,对流层中层上升速度最大,强暴雨即发生于此区域。此种强对流暴雨发生的原因,高层强迫作用比低层条件更为重要。

Abstract:

When the upper divergence moves eastward and overlaps the lower convergence, a strong convective activity will occur throughout the troposphere, with a maximum ascending velocity at the mid-level of the troposphere, wherein severe heavy rain develops. It is seen that the upper forcing plays a more important role than the lower-level conditions in the occurrence of heavy rain.