Spatiotemporal Changes in Cyclogenesis and Precipitation Regime over the Euro-Atlantic Sector in 1979–2019

IF 1.4 4区 地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES Russian Meteorology and Hydrology Pub Date : 2024-07-26 DOI:10.3103/s1068373924050029
I. S. Danilovich, M. G. Akperov, A. V. Beganskii, M. A. Dembitskaya
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Abstract

The study presents the classification of cyclones according to the region of origin and track in the Euro-Atlantic sector. The cyclones have been identified according to the ERA5 reanalysis data. Their seasonal frequency, travel speed, size, and central pressure have been quantified, and their trends have been revealed. Mean and maximum total precipitation associated with the distinguished types of cyclones over the territory of Europe is determined. It is shown that the frequency of the North Atlantic cyclones in the recent 40 years has decreased in winter, summer, and autumn and increased in spring. It has been revealed, that the frequency of the southern cyclones insignificantly decreases in summer and increases in winter. A decrease in minimum central pressure for some types of the North Atlantic cyclones occurs in winter and summer. There is an increase in maximum total precipitation in winter due to the North Atlantic cyclones and in summer due to the southern cyclones. The number of days with cyclonic precipitation decreases for all types of cyclones.

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1979-2019年欧洲-大西洋地区气旋生成和降水制度的时空变化
摘要 本研究根据欧洲-大西洋区域气旋的起源区域和路径对气旋进行了分类。气旋是根据ERA5再分析数据确定的。对气旋的季节频率、移动速度、大小和中心气压进行了量化,并揭示了其发展趋势。确定了与欧洲境内不同类型气旋相关的平均和最大总降水量。结果表明,近 40 年来,北大西洋气旋的频率在冬季、夏季和秋季有所下降,而在春季有所上升。研究还发现,南部气旋的频率在夏季明显减少,而在冬季增加。北大西洋某些类型气旋的最低中心气压在冬季和夏季有所下降。北大西洋气旋导致冬季最大降水总量增加,而南方气旋导致夏季最大降水总量增加。所有类型气旋的气旋降水日数都会减少。
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来源期刊
Russian Meteorology and Hydrology
Russian Meteorology and Hydrology METEOROLOGY & ATMOSPHERIC SCIENCES-
CiteScore
1.70
自引率
28.60%
发文量
44
审稿时长
4-8 weeks
期刊介绍: Russian Meteorology and Hydrology is a peer reviewed journal that covers topical issues of hydrometeorological science and practice: methods of forecasting weather and hydrological phenomena, climate monitoring issues, environmental pollution, space hydrometeorology, agrometeorology.
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