边界层急流及与逆温层的关系

本文对长江中下游 地区 边界层 风场和 逆 温层 分布进行 了统计分析.发 现在长江中下游地区边界层内有时存在 着强风速带,其主要表现为东北和 西南急流,边界层急流 只有在西南气流时才常位于 逆温层或等温层 顶部;冷锋 过境后 常可看到一支位于 锋面逆温下部的偏北强风 速带 并常伴随气 旋或冷锋移 动; 它们 与暴雨和 强 对 流发 生有一“定联系

Relationship Between the Inversion Layer and the Boundary Layer Jet

In the paper, the atatistics analyses of the inversion layer and the bounday layer jet over middle and lower reaches of the Changjang Valley have been made. The results show that the strong wind speed area at times exists in the, boundary layer over the middle and lower reaches of the Changjiang Valley and that most of the jet streams are northeastward and southwestward. The southwest jet stream often locates at the top of the inversion layer A northward strong wind speed belt often appears at the lower part of the cold front inversion and moves with cyclone and cold front while a cold front is passing through. The strong wind speed belt is related to the occurrence of heavy rain and severe convection.