The vortical response to penetrative convection and the associated gravity‐wave generation
The vortical response to penetrative convection and the associated gravity‐wave generation
复制标题
对穿透对流的涡旋响应和相关的重力波产生
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
T. Lane
中科院分区：
文献类型：
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作者：
T. Lane
这项研究记录了由于穿透对流上升气流而产生的涡旋运动。使用一个理想化的轴对称模型的干热气流，它表明，在一个稳定的环境中，斜压生成的涡度形成一个循环，反对上升气流过冲，并体现了第一个签名的重力波从热。振荡符号的涡度的继续斜压生成完成了第一个全波长并填充波包。这些例子提供了穿透对流产生重力波的另一种描述，并提供了对波源形态的进一步了解。版权所有© 2008皇家气象学会
This study documents the vortical motions that arise due to penetrative convective updraughts. Using an idealized axisymmetric model of dry thermals it is shown that in a stable environment the baroclinic generation of vorticity forms a circulation that opposes updraught overshoot and manifests the first signature of gravity waves emanating from the thermal. Continued baroclinic generation of vorticity of oscillating sign completes the first full wavelength and populates the wave packet. These examples provide an alternate description of the generation of gravity waves by penetrative convection and provide further insight into the morphology of the wave source Copyright © 2008 Royal Meteorological Society