The Oklahoma-Kansas mesoscale convective system of 10-11 June 1985: precipitation structure and single-Doppler radar analysis
The Oklahoma-Kansas mesoscale convective system of 10-11 June 1985: precipitation structure and single-Doppler radar analysis
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1985年6月10日至11日俄克拉荷马州-堪萨斯州中尺度对流系统：降水结构和单多普勒雷达分析
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
T. Matejka
中科院分区：
文献类型：
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作者：
S. Rutledge;R. Houze;M. Biggerstaff;T. Matejka
摘要利用常规雷达、卫星和单多普勒雷达等多种观测手段对6月10-11日在堪萨斯观测到的暴雨前中尺度对流系统进行了研究。这场风暴在成熟期由一条强烈的对流线和一片广阔的层状雨区组成。风暴前多普勒雷达的观测结果表明，总体气流模式与先前分析的情况相似;然而，由于多普勒观测在时间和空间上都相当广泛，它们首次揭示了气流的一些细节。一个后方入流射流，前到后的高空气流，和中尺度的上升气流和下降气流都存在。中尺度下沉气流开始于倾斜后部入流急流的顶部。在这种流动中的水凝物的升华和蒸发显然产生了必要的冷却，以驱动中尺度下沉气流环流。后部入流急流的强度和斜率随风暴位置的变化而变化，表现出明显的非对称性。
Abstract The 10–11 June mesoscale convective system observed in Kansas during PRE-STORM is studied using a variety of observations including conventional radar, satellite, and single-Doppler radar. This storm, at maturity, consisted of a strong line of convection trailed by a broad region of stratiform rain. The PRE-STORM Doppler radar observations show that the general airflow pattern is similar to that seen in previously analyzed cases; however, since the Doppler observations were quite extensive in time and space, they permit several details of the airflow to be revealed for the first time. A rear inflow jet, front-to-rear flow aloft, and a mesoscale updraft and downdraft were all present. The mesoscale downdraft commenced at the top of the slanted rear inflow jet. Sublimation and evaporation of hydrometeors in this flow apparently generated the necessary cooling to drive the mesoscale downdraft circulation. The intensity and slope of the rear inflow jet varied with location in the storm, which apparen...