Structure and Formation Mechanism on the 24 May 2000 Supercell-Like Storm Developing in a Moist Environment over the Kanto Plain, Japan
Structure and Formation Mechanism on the 24 May 2000 Supercell-Like Storm Developing in a Moist Environment over the Kanto Plain, Japan
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DOI：
10.1175/2007mwr2155.1
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发表时间：
2008-07
影响因子：
3.2
通讯作者：
S. Shimizu;H. Uyeda;Q. Moteki;T. Maesaka;Yoshimasa Takaya;K. Akaeda;T. Kato;M. Yoshizaki
中科院分区：
文献类型：
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作者：
S. Shimizu;H. Uyeda;Q. Moteki;T. Maesaka;Yoshimasa Takaya;K. Akaeda;T. Kato;M. Yoshizaki
摘要：利用双多普勒雷达分析和云分辨风暴模拟器（CReSS）研究了融化层下方潮湿环境中超级单元状风暴的结构和形成机制。 2000年5月24日，日本关东平原上空形成了类超级单体风暴。类超级单体风暴的环境具有对流可用势能大（1000 J·kg−1）、强垂直风切变（地表与海拔5公里之间4.2×10−3 s−1）和潮湿层（3公里高融化层以下相对湿度为60%~90%）的特点。采用变分法的双多普勒雷达分析表明，这种超级单体风暴的结构与融化层以下干燥环境中的典型超级单体相似，例如美国大平原的超级单体。这些结构包括钩状回波、悬垂回波结构和具有强垂直涡度的强烈上升气流。然而，超级电池的一些特征......
Abstract The structure and formation mechanism of a supercell-like storm in a moist environment below a melting layer were investigated using dual-Doppler radar analysis and a cloud-resolving storm simulator (CReSS). The supercell-like storm developed over the Kanto Plain, Japan, on 24 May 2000. The environment of the supercell-like storm possessed large convective available potential energy (1000 J kg−1), strong vertical wind shear (4.2 × 10−3 s−1 between the surface and 5 km above sea level), and a moist layer (the relative humidity was 60%–90% below a melting layer at 3 km in height). The dual-Doppler radar analysis with a variational method revealed that the supercell-like storm had similar structures to those of a typical supercell in a dry environment below a melting layer, such as that in the Great Plains in the United States. The structures included a hook echo, an overhanging echo structure, and a strong updraft with strong vertical vorticity. However, some of the characteristics of the supercell...