Spatial and temporal variability of the water transparency distribution in the north-western Black Sea

The paper is devoted to discussion of the prospects of simplified 2D hydrodynamic model use aimed at forecasting the wind-induced sea level fluctuations within the area of sea ports (Chornomorsk, Odesa and Yuzhnyi) of the Odesa Region in the North-Western part of the Black Sea. Spatio-temporal variability of wind conditions at the sea-atmosphere division is specified based on the data of the global numerical weather prediction model of the Global Forecast System (GFS). The research includes the description of the mathematical structure of the hydrodynamic model and the results of its adaptation to the conditions of the simulated sea area. It presents the results of model verification in the version which implies adoption of wind data from the archives of GFS-analysis and GFS-forecasts for 2010, 2016 and 2017. The verification was performed by comparing wind-induced denivellations of the sea level at the ports of Chornomorsk, Odesa and Yuzhnyi calculated over the course of modelling and those established on the basis of observational data (with the discreteness of 6 hours). A quantitative assessment of the calculation accuracy was performed for the cases where, according to the observational data, level denivellations exceeded the value of the standard deviation for the entire series. New series of the observed and calculated model-based significant wind-induced denivellations of sea level were formed for each of the ports from the sets of samples that met this condition. Using these series estimates of the mean square error of the calculations, allowable error of calculations, correlation coefficient between the actual and calculated values of the level denivellations, the probability of the calculation method under the allowable error were obtained. It was established that in the case of use of the data from wind GFS-analysis (with spatial resolution of 0.5° both latitudinally and longitudinally) over the course of modelling the probability of calculation of significant sea level denivellation constitutes 84-85%, and in case of using the data from the GFS-archive of wind forecasts (with spatial resolution of 0.25°) – 88-91%. This allowed making a conclusion that the model has good prospects of use for operational forecast of the sea level fluctuations caused by storm wind in the version implying assimilation of the predicted information on the spatio-temporal variability of wind conditions obtained by means of the GFS global weather forecast model.

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Independent components of spatial-temporal structure of chlorophyll a patterns in the upper layer of the north-western shelf of the Black Sea

One Ecosystem ◽

10.3897/oneeco.6.e73269 ◽

2021 ◽

Vol 6 ◽

Author(s):

Natalya Kyrylenko ◽

Vladyslav Evstigneev

Keyword(s):

Black Sea ◽

Temporal Variability ◽

Temporal Structure ◽

The Black Sea ◽

Phytoplankton Succession ◽

Independent Components ◽

The North ◽

Component Decomposition ◽

Spatio Temporal ◽

North Western

In the present study, the results of independent component decomposition of satellite-derived chlorophyll a (Chla) patterns for the north-western part of the Black Sea are presented. The study has been carried out on the basis of the DINEOF-reconstructed dataset of 8-day average log-transformed Chla (alChla) patterns for 1997-2016. The alChla patterns were decomposed into six independent components of its spatio-temporal variability in the north-western shelf of the Black Sea. The independent components reflect the spatial distribution of alChla anomalies which are likely to be formed under the influence of sea circulation factors driven by wind. The paper presents the results of the analysis of the intra-annual variability of independent components. The interpretation of the patterns of intra-annual independent components variability is given, taking into account the seasonal variability of the wind factor, the flow of the Danube, the Dnieper and Southern Bug rivers and the fact of modulation of independent components dynamics by seasonal phytoplankton succession.

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Assessment of the Reactions of Algal Communities to Influence of Climatic Factors in the North-Western Black Sea Ecosystem

International Journal on Algae ◽

10.1615/interjalgae.v20.i2.20 ◽

2018 ◽

Vol 20 (2) ◽

pp. 121-134 ◽

Cited By ~ 1

Author(s):

G. G. Minicheva ◽

V. N. Bolshakov ◽

E. S. Kalashnik ◽

A. B. Zotov ◽

A. V. Marinets

Keyword(s):

Black Sea ◽

Climatic Factors ◽

Algal Communities ◽

The North ◽

North Western

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THE RELATION BETWEEN MICROPLANKTON ADENOSINE TRIPHOSPHATE AND CHLOROPHYLL-A IN THE NORTH-WESTERN PART OF THE BLACK SEA IN THE AUTUMN AND SPRING SEASONS

GEOLINKS 2019 Conference Proceedings Book 3 Volume 1 ◽

10.32008/geolinks2019/b3/v1/21 ◽

2019 ◽

Keyword(s):

Chlorophyll A ◽

Adenosine Triphosphate ◽

Black Sea ◽

The Black Sea ◽

The North ◽

North Western

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Amphipod (Crustacea, Amphipoda) Communities in the North-Western Part of the Black Sea

Vestnik Zoologii ◽

10.1515/vzoo-2016-0045 ◽

2016 ◽

Vol 50 (5) ◽

pp. 387-394

Author(s):

S. A. Kudrenko

Keyword(s):

Species Composition ◽

Community Composition ◽

Black Sea ◽

The Black Sea ◽

Published Data ◽

Amphipod Species ◽

Quantitative Parameters ◽

The North ◽

North Western

Abstract The data about the community composition, number and biomass of amphipods in three gulfs of the North-Western Black Sea are presented. The amphipod communities of the gulfs of Yahorlyk, Karkinit, and Tendra were studied and the species composition was compared with the previously published data. For each particular gulf, the list of amphipod species was composed. The quantitative parameters of the amphipod communities in the studied localities in different years were described.

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ECOLOGICAL CONSEQUENCES OF ANOXIC EVENTS AT THE NORTH-WESTERN BLACK SEA SHELF

Past and Present Water Column Anoxia - Nato Science Series: IV: Earth and Environmental Sciences ◽

10.1007/1-4020-4297-3_10 ◽

2006 ◽

pp. 247-256 ◽

Cited By ~ 1

Author(s):

Yu. P. Zaitsev

Keyword(s):

Black Sea ◽

Ecological Consequences ◽

The North ◽

Anoxic Events ◽

North Western

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Introduction

The Crimean War and Irish Society ◽

10.5949/liverpool/9781781382547.003.0001 ◽

2016 ◽

pp. 1-8

Author(s):

Paul Huddie

Keyword(s):

Black Sea ◽

Russian Empire ◽

The Black Sea ◽

Western Balkans ◽

Crimean War ◽

Black Sea Region ◽

The North ◽

The Russian Empire ◽

North Western

The year 2014 marked the 160th anniversary of the beginning of the Crimean War, 1854–6. It was during that anniversary year that the names of Crimea, Sevastopol, Simferopol and the Black Sea re-entered the lexicon of Ireland, and so did the terms ‘Russian aggression’, ‘territorial violation’ and ‘weak neighbour’. Coincidentally, those same places and terms, and the sheer extent to which they perpetuated within Irish and even world media as well as popular parlance, had not been seen nor heard since 1854. It was in that year that the British and French Empires committed themselves to war in the wider Black Sea region and beyond against the Russian Empire. The latter had demonstrated clear aggression, initially diplomatic and later military, against its perceived-to-be-weak neighbour and long-term adversary in the region, the Ottoman Empire, or Turkey. As part of that aggression Russia invaded the latter’s vassal principalities in the north-western Balkans, namely Wallachia and Moldavia (part of modern-day Romania), collectively known as the Danubian Principalities. Russia had previously taken Crimea from the Ottomans in 1783....

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