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首页> 外文期刊>Journal of atmospheric and solar-terrestrial physics >Regional and global large-scale dynamics associated with a prolonged drought event in Greece
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Regional and global large-scale dynamics associated with a prolonged drought event in Greece

机译：与希腊长期干旱事件相关的区域和全球大规模动态

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摘要

The large-scale dynamical processes associated with an exceptionally dry and warm autumn during 1993 in Greece were studied. On the regional scale, it was found that low-frequency eddies prevailed over Europe in the form of a block with large-scale descending motion persisting throughout the whole troposphere. Moreover, the subtropical jet was unusually positioned much farther north over the Balkan peninsula and oscillated between this position and one over the central mainland of Greece where it interacted with the southern part of the polar front jet. On the global scale, it was found that this type of atmospheric circulation over Europe was closely related with a region of latent heat release in convective clouds over the tropics between the longitudes 100° and 120° E, and the formation of a steady divergence system at 150 hPa over the same region, strongly affecting the global rotational flow.
机译：研究了与1993年希腊异常干燥和温暖的秋天有关的大规模动力过程。在区域范围内，人们发现低频涡流以块体形式盛行于欧洲，并在整个对流层中持续大规模下降运动。此外，副热带喷气机异常地位于巴尔干半岛北部以北，并在该位置和希腊中部大陆之间的一个位置振荡，并与极地前喷气机的南部相互作用。在全球范围内，人们发现欧洲的这种大气环流与经度介于100°和120°E之间的热带对流云中的潜热释放区域密切相关，并且形成了稳定的发散系统在同一区域150 hPa时，强烈影响整体旋转流量。

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