A statistical analysis of sounding derived indices and parameters for extreme and non-extreme thunderstorm events over Cyprus
A statistical analysis of sounding derived indices and parameters for extreme and non-extreme thunderstorm events over Cyprus
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塞浦路斯极端和非极端雷暴事件的探空衍生指数和参数的统计分析
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
S. Michaelides
中科院分区：
文献类型：
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作者：
K. Savvidou;A. Orphanou;D. Charalambous;P. Lingis;S. Michaelides
抽象的。本研究的主要目的是对1997年至2001年期间塞浦路斯极端和非极端雷暴事件的几个稳定性指数和参数进行简单的统计分析。在本研究中，分析了上述期间来自阿塔拉萨站（北纬 35°1´，东经 33°4´）的无线电探空仪数据。研究中设定的稳定性指标和参数包括K指数、总总量（TT）指数、对流可用势能相关参数，如对流可用势能（CAPE）、下沉气流CAPE（DCAPE）和对流抑制（CIN）、涡度发生器参数（VGP）、体积理查森数（BRN）、BRN切变和风暴相对螺旋度（SRH）。如果 K 指数和 TotalTotals (TT) 指数值分别超过 26.9 和 50，则事件被归类为极端事件（如果主要是 CAPE 非零）和次要事件。 CAPE 呈阳性但其他指标值较低的病例被确定为非极端病例。通过计算这些指标值的中位数、下限和上限以及下四分位数和上四分位数，可以确定其分布的主要特征。
Abstract. The main purpose of this study is to provide a simple statistical analysis of several stability indices and parameters for extreme and non-extreme thunderstorm events during the period 1997 to 2001 in Cyprus. For this study, radiosonde data from Athalassa station (35°1´ N, 33°4´ E) were analyzed during the aforementioned period. The stability indices and parameters set under study are the K index, the Total Totals (TT) index, the Convective Available Potential Energy related parameters such as Convective Available Potential Energy (CAPE), Downdraft CAPE (DCAPE) and the Convective Inhibition (CIN), the Vorticity Generator Parameter (VGP), the Bulk Richardson Number (BRN), the BRN Shear and the Storm Relative Helicity (SRH). An event is categorized as extreme, if primarily, CAPE was non zero and secondary, if values of both the K and the TotalTotals (TT) indices exceeded 26.9 and 50, respectively. The cases with positive CAPE but lower values of the other indices, were identified as non-extreme. By calculating the median, the lower and upper limits, as well as the lower and upper quartiles of the values of these indices, the main characteristics of their distribution were determined.