Cumulonimbus Vertical Velocity Events in GATE. Part II: Synthesis and Model Core Structure
Cumulonimbus Vertical Velocity Events in GATE. Part II: Synthesis and Model Core Structure
复制标题
GATE 中的积雨云垂直速度事件。
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
M. Lemone
中科院分区：
文献类型：
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作者：
E. Zipser;M. Lemone
第一部分给出了对流气流和核心的性质。根据我们的定义，对流上升气流必须具有0.5 km的正垂直速度，并且在1 s内超过0.5 m s - 1；对流上升气流核心在0.5 km范围内必须超过1 m s - 1。下沉气流和下沉气流核心的定义类似。这里将草稿和堆芯的性能与之前的工作结果进行了比较。此外，还讨论了第一部分结果的含义。GATE核心和气流的大小和强度与飓风的测量值相当，但比大陆雷暴的测量值弱。较小的强度似乎与近湿绝热的GATE测深有关。GATE磁芯的质量通量符合大规模要求。它相当均匀地分布在核心大小和强度的范围内。上升气流核心垂直速度与直径呈正相关，这主要是少数大型强事件的结果。绝大多数GATE对流核都是软的。
Abstract The properties of convective drafts and cores are presented in Part I. By our definition a convective updraft must have a positive vertical velocity for 0.5 km, and exceed 0.5 m s−1 for 1 s; a convective updraft core must exceed 1 m s−1 for 0.5 km. Downdrafts and downdraft cores are defined analogously. Here the properties of the drafts and cores are compared to results of previous work. In addition, the implications of the results in Part I are discussed. GATE cores and drafts are comparable in size and intensity to those measured in hurricanes but weaker than those measured in continental thunderstorms. The lesser intensity seems related to the nearly moist adiabatic GATE sounding. The mass flux by GATE cores is consistent with large-scale requirements. It is fairly evenly distributed over a range of core size and intensity. Updraft core vertical velocity and diameter are positively correlated, primarily the result of a few large strong events. The vast majority of GATE convective cores are suf...