Several warm-core cyclones in the Mediterranean, which were analyzed in the literature, are studied using ERA5 reanalysis, to identify the environment where they develop and distinguish tropical-like cyclones from non-tropical warm-core cyclones. Initially, the cyclone phase space is analyzed to distinguish the cyclones that have a symmetrical deep warm core. Subsequently, the temporal evolution of several parameters is considered, including the distance between the area of maximum tangential wind speed and the cyclone center. Some differences are observed between the cyclones analyzed: one category of cyclones develops in areas of moderate-low baroclinicity and intense convective processes, as occurs in tropical cyclones. Another group of cyclones develops in a strongly baroclinic environment with weak convective processes and intense vertical wind shear, as occurs in warm seclusions. Two cyclones, showing similarities with polar lows, are also identified.

中文翻译：

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地中海类热带气旋特征的新改进

使用 ERA5 再分析对文献中分析过的几个地中海暖核气旋进行了研究，以确定它们发展的环境，并将热带气旋与非热带暖核气旋区分开来。首先，分析气旋相空间以区分具有对称深暖核心的气旋。随后，考虑了几个参数的时间演变，包括最大切向风速区域与气旋中心之间的距离。在分析的气旋之间观察到一些差异：一类气旋在中低斜压和强对流过程的区域中发展，如热带气旋中发生的那样。另一组气旋在强烈的斜压环境中发展，具有弱对流过程和强烈的垂直风切变，就像在温暖的僻静地区发生的那样。还发现了两个与极地低压相似的气旋。