Low-frequency variability of storms in the northern Black Sea and associated processes in the ocean–atmosphere system

Polonsky, A. B.; Evstigneev, V. P.; Naumova, V.A.; Voskresenskaya, E. N.

doi:10.1007/s10113-013-0546-z

Cited by 18 publications

(24 citation statements)

References 41 publications

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“…It is clearly seen that the anomalies of wave heights are much larger in the 1970-1980 period, but starting from about 1983 a sharp decrease took place. This qualitatively well coincides with changes of the wave anomalies obtained from hydrometeorological observations of the southern coast of the Black Sea [4,10]. It was shown that such a low-frequency fluctuation of the maximum annual wave heights can be related to the mutual influence of the longterm periodicity of the Atlantic Multi-decadal (50 years) and Pacific Decadal (40 years) Oscillation.…”

Section: Discussion Of the Methods And Results Obtainedsupporting

confidence: 85%

“…In accordance with the technique proposed in [4,10], to standardize the data of visual observations, a normalization aimed to obtain anomalies of the maximum annual wave heights was carried out by the following formula…”

Section: Discussion Of the Methods And Results Obtainedmentioning

confidence: 99%

“…Recent studies showed that fluctuations in the large-scale atmospheric circulation characteristics, determined by climatic indices, such as the North Atlantic Oscillation (NAO), Atlantic Multi-decadal (AMO) and Pacific Decadal Oscillation (PDO), have a significant effect on the regional storm activity variation and accordingly -on the wave heights and morphodynamics of the shores [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The authors associated the storm intensity reduction in the 2000 s with the lowfrequency variability of the East Atlantic -Western Russia (EA/WR) oscillations [9]. Long-term fluctuations (of the order of 40-50 years) of maximum annual wave heights were identified in [4][5][6][7][8][9][10] according to the data of long-term observations of Ukraine hydrometeorological stations in the Black Sea. It was shown that they can be associated with changes in the Atlantic Multi-decadal and Pacific Decadal Oscillation.…”

Section: Introductionmentioning

confidence: 99%

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Methods of Analyzing Nonstationary Variability of the Black Sea Wave Climate

Saprykina¹,

Kuznetsov²

2018

PhO

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Based on the data of Voluntary Observing Ship (VOS) Program of the Black Sea waves in 1950-2007, the wave climate variability and its relation to the main climatic indices is analyzed by the example of the maximum annual wave heights. Climatic indices characterizing the North Atlantic, Atlantic Multi-Decadal and Pacific Decadal oscillations, as well as fluctuations of the East Atlantic-Western Russia teleconnection pattern are considered. It is shown that the methods based on the wavelet analysis, particularly the spavlet analysis and the method of the wavelet correlations proposed by the authors, have doubtless advantages since they permit to reveal fine structure of the nonstationary process in variability both of the wave heights and the climatic indices, the features of various fluctuations' periods, and to analyze relationships between the climatic indices' changes and the wave heights. Due to these methods, determined are the main periods of variability in the anomalies of the maximum annual wave heights associated with a) the North Atlantic Oscillation (about 28-25, 14-16 and 6-6.5 years); b) the Atlantic Multi-Decadal Oscillation (50, 25 and about 14-16 years); c) the Pacific Decadal Oscillation (about 12.5-10 years) and d) the East Atlantic-Western Russia pattern fluctuation (about 66-67, 14-16 and 7-7.5 years). Significant low-frequency impact of fluctuations of the East Atlantic-Western Russia teleconnection pattern upon the Black Sea wave climate is shown for the first time.

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Section: Discussion Of the Methods And Results Obtainedsupporting

confidence: 85%

Section: Discussion Of the Methods And Results Obtainedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Methods of Analyzing Nonstationary Variability of the Black Sea Wave Climate

Saprykina¹,

Kuznetsov²

2018

PhO

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“…Dust events in the western Mediterranean are associated with high-pressure conditions, limiting the development of lows to the western North Africa, while the eastward evolution of cyclones over the central Mediterranean and Northern Africa accompanies dust events in the central and eastern Mediterranean. Polonsky et al (2014) have evaluated monthly anomalies of stormy windwave heights and return periods using secular routine observations in the coastal zone of the northern Black Sea. Wind-wave anomalies in this region are characterized by high-amplitude quasi-periodical variability with typical time scale of about 50 years.…”

Section: Extremesmentioning

confidence: 99%