The Acoustic Nature of “Storm Nose”, “Supercell” Vortices and Tornadoes

IF 0.4 Q4 MATHEMATICS
V. I. Pinakov
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引用次数: 0

Abstract

The process of cumulonimbus cloud Cb calvus formation in the middle latitudes of real atmosphere is analyzed in this work. Its transformation from initial lifecycle stage to “maturity” undergoes due to the formation of the waveguide called “aerial acoustic channel” in the troposphere near the level of temperature minimum that is close to 2 km altitude. This “aerial acoustic channel” can be considered as analog of “deep sound channel” that corresponds to the minimal sound speed level. Tropospheric “channel” related to the thermal inversion zone is almost unlimited horizontally. Synchronous generation of two compression waves (ascending one above Cb and descending one inside Cb) is caused by Cb calvus dome ascension. The first one can provoke the aerodynamic draft previously unexplained. The second one results in the growth of its “storm nose” and in the axial and peripheral descending mechanisms in Cb. The penetration of Cb into stratosphere results in the destruction of dynamic balance around Cb top and hence in its unloading in the descending decompression wave. Here the air cools down to the “dew point” in the place of conjugation with parental cloud – due to Snellius law it results in the formation of aerosol “vortex” as condensation front; this “vortex” has calculated value of its generatrix against vertical. Due to D. Snow’s criterion, this vortex forms either “supercell” vortex or tornado vortex.
“风暴鼻子”、“超级单体”漩涡和龙卷风的声学性质
本文分析了实际大气中纬度地区积雨云的形成过程。它从初始生命周期阶段到“成熟期”的转变是由于在接近2公里高度的最低温度附近的对流层中形成了称为“航空声通道”的波导。这种“空中声道”可以看作是与最小声速级对应的“深声道”的模拟。与热逆温带有关的对流层“通道”在水平上几乎是无限的。Cb裂穹上升导致Cb上方上升和Cb内部下降两个压缩波同步产生。第一个可以引起先前无法解释的空气动力气流。第二个原因是其“风暴鼻”的增长以及Cb的轴向和外围下降机制。由于Cb进入平流层,导致Cb顶部周围的动平衡被破坏,从而导致Cb在降压波中卸载。在这里,空气冷却到与母云接合处的“露点”——由于斯涅利乌斯定律,它导致形成气溶胶“漩涡”作为凝结锋;这个“漩涡”已经计算出它的母线的垂直值。根据D. Snow的判据,该涡旋形成“超级单体”涡旋或龙卷风涡旋。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
26
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