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首页> 外文期刊>Journal of Geophysical Research, D. Atmospheres: JGR >Effects of Mesoscale Eddies on the Intensity of Cyclones in the Mediterranean Sea
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Effects of Mesoscale Eddies on the Intensity of Cyclones in the Mediterranean Sea

机译:Effects of Mesoscale Eddies on the Intensity of Cyclones in the Mediterranean Sea

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Abstract The Mediterranean Sea is a relatively small basin with complex, unique topography and has long been considered a hot spot for cyclones. This sea is also characterized by intense mesoscale eddy activity. Although eddies are known to play important roles in cyclones in other regions, their effects on Mediterranean cyclones have not received much research attention. Here, we analyzed how warm‐core eddies (WCEs) and cold‐core eddies (CCEs) interact with Mediterranean cyclones. We considered eight Mediterranean cyclones: four that passed over WCEs and four that passed over CCEs. In general, we observed sudden drops in Mean Sea level (MSL) pressure and increased wind speeds over the WCEs and increased MSL pressure and decreased wind speeds above the CCEs. The temperature of the mixed layer decreased after a cyclone passed over an eddy, but this occurred to a lesser extent for CCEs. In contrast, mixed‐layer salinity decreased in the case of WCEs and increased in the case of CCEs. Larger amounts of precipitation were observed over WCEs, as compared to CCEs. The amount of precipitation associated with a WCE seemed to depend on the area and intensity of the eddy; larger, more intense eddies were associated with larger amounts of precipitation. Also, higher latent and sensible heat fluxes were observed over WCEs, as compared to CCEs, which could be responsible for the sudden increases in cyclone intensity. Interestingly, only one persistent WCE was found in the winter; whereas no persistent CCEs were found in the summer, calling for further case‐by‐case detailed investigation.
机译:抽象的地中海是一个相对小盆地复杂,独特的地形和长期以来被认为是一个气旋的热点。这个海也是强烈的特征中尺度涡活动。在气旋扮演着重要角色其他地区,对地中海的影响飓风没有收到许多研究的关注。(wc)和冷量核心漩涡(cc)相互作用地中海气旋。地中海气旋:四个了经过cc wc和四个。我们观察到平均海平面突然下降(实验室)压力和增加风速wc火星科学实验室和增加压力和降低风速度高于cc。混合层风暴过去后下降艾迪,但这发生在较小程度上cc。在wc和增加的情况cc。观察到在wc,相比cc。降水量与WCE有关似乎取决于的面积和强度涡流;大量的降水。更高的潜在和显热通量观察到在wc, cc相比,可以负责的突然增加飓风强度。冬天持续WCE被发现;没有发现持久的cc在夏天,呼吁进一步地理案例的详细情况调查。

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