intense cyclones in the black sea region: change, variability, predictability and manifestations in the storm activity

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ID: 141517
2020
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Abstract
Cyclonic activity in the midlatitudes is a form of general atmospheric circulation, and the most intense cyclones are the cause of hydrometeorological anomalies that lead to economic damage, casualties and human losses. This paper examines the features of variability of intense cyclonic activity in the Black Sea region and the examples of their regional manifestations in the storm types. Based on 6-hourly NCEP/NCAR reanalysis data on 1000 hPa geopotential height fields with 2° × 2° spatial resolution and using the methodology by M.Yu. Bardin, objective data were obtained for the identification and estimation of the frequency of deep cyclones (reaching 0.75 and 0.95 quantiles by intensity and depth—intense and extreme cyclones, respectively) for the Black Sea region during the period 1951–2017. Additionally, a specific methodology of more precise cyclone identification based on spherical spline interpolation was successfully applied, and then the two methodologies were compared. The key point of the study is the following: In the background of negative significant linear trends and interdecadal variability (period of about 35 years), typical scales of their interannual variability on the periods of about 2.5–3.5 and 6–8 years were identified. These periods coincide with the time scales of the North Atlantic Oscillation and El Nino–Southern Oscillation, providing an outlook for further study of the patterns of their connection. Besides, seasonal forecasts of frequency of intense cyclones in the Black Sea region were successfully modeled using an artificial neural network technique. Finally, the case studies of regional manifestations of deep cyclones in the types of storms in the northern Black Sea coast revealed substantial differences in the location of deep centers of cyclones and storm tracks associated with the large-scale pressure fields.
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maslova2020sustainabilityintense Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Veronika N. Maslova;Elena N. Voskresenskaya;Andrey S. Lubkov;Aleksandr V. Yurovsky;Viktor Y. Zhuravskiy;Vladislav P. Evstigneev
Journal journal of physics: conference series
Year 2020
DOI
10.3390/su12114468
URL
https://www.mdpi.com/2071-1050/12/11/4468
Keywords Keywords not found

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