Sergey Stanichny

• PhD
• Head of Department at Marine Hydrophysical Institute

Intense wind-driven setdowns can cause extensive drying of the shallow Taganrog Bay in the Azov Sea, significantly impacting the marine infrastructure and ecosystem. Satellite measurements of MSI Sentinel-2 and OLI Landsat 8 during 2015–2021 were used to identify 28 intense cases of such processes. Using a simple difference method based on near-inf...

Rapid rise of salinity is observed in the Black Sea in recent years, with the largest positive trend (0.07 psμ per 10 years) detected in the pycnocline. We use long-term hydrological measurements for 1985–2019 to show that salinity of pycnocline has intense seasonal and interannual variability modulated by the mechanical and convective mixing. In t...

The mechanisms of internal waves manifestation in satellite data of the optical range are considered for the mouth area of the Danube. Three main mechanisms for the manifestation of internal waves are identified - the previously described dynamic (due to a change in the roughness of the sea surface in convergent zones created by a moving internal w...

Purpose. The paper is purposed at studying the dynamics and reasons of the Black Sea water inflows to the Sea of Azov, as well as the features of their seasonal variability. Methods and Results. Medium and high resolution satellite data, and also the results of numerical modeling the salinity field of the Azov-Black Sea basin for 2008–2009 by the h...

High- and medium-resolution satellite optical imagery show that submesoscale cyclonic eddies (SCEs) trap coastal waters and induce their rapid cross-shelf transport. Due to the presence of a rigid boundary, the convergence is observed in the coastal part of SCEs. It causes accumulation of suspended matter, which spins inward in a spiral motion towa...

One of the eddy “hotspots” in the Black Sea is the area of stationary Sevastopol anticyclone. Here this eddy can reside for >3–6 months significantly affecting the cross-shelf exchange and nutrient fluxes in the Black Sea. Detaching from its stationary location, the eddy moves westward, where it finally dissipates. In this article, we use altimetry...

An automatic algorithm is proposed for identifying areas of cyanobacteria (CB) blooms in the Azov Sea based on an analysis of the optical spectra of MODIS satellite data. The algorithm has been validated by comparison with high-resolution quasi-synchronous Landsat data. The results obtained with this algorithm were used to study the spatiotemporal...

On the basis of medium resolution optical satellite data from 2001 to 2022, cases of intensive development of cyanobacteria in the southern part of the Caspian Sea were identified — mainly in July and August in 2005, 2008–2010, 2017, 2018 and 2021. In 2009, intensive development of cyanobacteria was observed in September and early October, and in 2...

An outbreak of marine mucilage in the Sea of Marmara in the spring and summer of 2021 is described. Based on satellite data, an analysis of similar outbreaks in the previous decade was carried out. As shown, the current situation is unique both in terms of the water area coverage and phenomenon duration. The need for comprehensive research is empha...

A study has been performed for the Black Sea basin investigating the properties of the vertical distribution of the daily temperature variation in different seasons of 2015 and their relationship with stratification based on the results of the NEMO model simulations. It is shown that the seasonal variation and spatial features of the diurnal temper...

В работе предложен автоматической алгоритм выделения областей цветения цианобактерий (ЦБ) в Азовском море на основе анализа оптических спектров спутниковых данных MODIS. Валидация алгоритма проведена на основе сопоставления с квазисинхронными данными высокого разрешения Landsat. На основе результатов применения алгоритма были исследованы пространст...

Long-term high and medium resolution satellite data are used to study spatial, seasonal and interannual variability of the cyanobacteria blooms (CB) in the North-Western Shelf (NWS) of the Black Sea. High-resolution Landsat data demonstrate that CB were regularly observed in the study area on satellite images in 1985-2020. Comparison of quasi-synch...

High-resolution Bio-Argo measurements of backscattering (bbp) were used to study the vertical distribution and time variability of the sinking of small, highly reflective particles in the Black Sea in the 0–200 m layer. The evolution of particles is divided into three stages: formation, sinking, and removal. The formation of small, highly reflectiv...

This chapter presents an overview and inter-comparison of the main characteristics of the known well-established oil spill models applied in the Black Sea and the Sea of Azov. Since the development of the MyOcean Black Sea Forecasting Centre and, later on, of the Copernicus Black Sea Monitoring Forecasting Centre (CMEMS Black Sea MFC), several oil...

A quasi-tropical cyclone (QTC) observed over the Black Sea on 25–29 September 2005 caused an exceptionally strong anomalous autumn coccolithophore bloom that lasted for more than 1.5 months. The QTC induced intense upwelling, causing a decrease in sea surface temperature of 15 ∘C and an acceleration of the cyclonic Rim Current up to extreme values...

A Correction to this paper has been published: https:doi.org/10.1007/s10236-021-01463-y

High-resolution measurements by unmanned aerial vehicles (UAVs), satellite and in-situ data are used to study the optical structure of coastal submesoscale eddies and their influence on the transport of total suspended matter (TSM). It is shown that submesoscale cyclones cause intense cross-shelf TSM fluxes and subsequent accumulation of TSM in the...

The Black Sea is characterized by powerful summer coccolithophore blooms with strong interannual variability. In this paper, we used satellite and Bio-Argo measurements to show that the emergence of extremely strong blooms in several years was caused by intense vertical entrainment of nutrients from deep isopycnal layers during winter convection. I...

Long-term arrays of satellite optical measurements of Landsat-5,7,8 and Sentinel-2 were used to describe the characteristics of submesoscale eddy (SE) dynamics in different parts of the Crimean coast: their geometric and kinematic characteristics, the main sites and mechanisms of formation, and impact on the redistribution of suspended matter. The...

На основе высокодетальных измерений беспилотного летательного аппарата (БПЛА), спутниковых данных и измерений in situ исследуется оптическая структура субмезомасштабных вихрей в прибрежной зоне Крыма и их влияние на перенос взвешенного вещества. Показано, что субмезомасштабные циклоны вызывают интенсивные кросс-шельфовые потоки взвешенного вещества...

In the central part of the Sea of Azov for the period 2003–2018, cases of intense cyanobacteria blooming were detected in satellite data of high and medium resolution. Such events were observed from 2005 to 2010, and in 2012–2013. The longest of these blooms occurred in 2005, 2006, and 2009. The influence of temperature and wind conditions as well...

13.08.2020 г. Цель. Представлен подход, применяемый к анализу спутниковых сканерных оптических изоб-ражений высокого пространственного разрешения для идентификации и определения количе-ственных характеристик субмезомасштабных динамических процессов в верхнем слое океана. Методы и результаты. В качестве спутниковых данных используются сканерные изоб...

The year‐to‐year seasonal variability of the vertical distribution of concentration of chlorophyll‐a (Chla) in the Black Sea, its relation to light (photosynthetically available irradiance [PAR]), and mixing conditions were studied based on the 6‐year (2014–2019) measurements of Bio‐Argo floats. Variations in PAR caused by changes in incoming solar...

The paper analyzes peculiarities of formation of the Sivash Gulf coastal area, which manifest at the moment as a combination of abrasive and accumulation processes. The paper gives more details about vegetation coasts (a special coast type related to a specific sedimentation type) defined by reed vegetation development, which is prevalent near clou...

Purpose. The approach represented in the article is applied to analysis of satellite scanner optical images of high spatial resolution for identifying and quantitative determining the characteristics of the sub-mesoscale dynamic processes in the ocean upper layer. Methods and Results. The Envisat AATSR and MERIS SAR-images are used as the satellit...

An algorithm for retrieving the fraction of the sea surface covered by whitecaps (W) from Landsat-8 satellite optical reflectance measurements in the near-infrared channel is described. The distribution of W derived from approximately 100 Landsat-8 scenes was compared with quasi-synchronous scatterometer measurements of wind speed (u10), which allo...

Abstract. Short-period action of the quasi-tropical cyclone in September 2005 caused strong autumn coccolithophores bloom in the Black Sea lasted for more than 1.5 months. The cyclone induced intense upwelling of deep waters with temperature on 10–13 °C lower than surrounding waters and acceleration of the Rim Current up to extreme values of 0.75 m...

The Black Sea is one of the largest land-locked basins in the world. Due to the vulnerability of its unique marine ecosystem, accurate long-term modelling of its hydrodynamics is needed. In this study, we first compare the skills of four NEMO based Black Sea models in free-run which use different discretization schemes. We find that the most accura...

In the present study, the features of the temperature diurnal cycle of the Black Sea upper layer during different seasons were studied using temperature-profiling drifters data and the scanner SEVIRI. According to the thermodrifters data, the maximal negative temperature anomalies in the surface layer (horizon of 0.2 m) are typical for period from...

Цель: Исследована пространственно-временная изменчивость толщины верхнего квазиоднородного слоя (ВКС) в различных районах Черного моря и определена ее связь с динамикой вод и атмосферным воздействием за 1985-2017 гг. Методы и результаты: На основе архива гидрологических данных за 1985-2017 гг, включающего измерения судовых экспедиций, буев Argo и з...

Purpose. Spatio-temporal variability of the mixed layer depth (MLD) in different areas of the Black Sea in 1985–2017, its relationship with basin dynamics and atmospheric forcing are studied. Methods and Results. The study is based on the hydrological data archive for 1985–2017 including the measurements of the ship expeditions, the Argo buoys and...

Bio-Argo measurements of the backscattering coefficient (bbp) were used to investigate the time-depth evolution of coccolithophore blooms in the Black Sea. Five years of Bio-Argo data obtained in 2014-2018 revealed two distinct peaks of bbp corresponding to the winter and early summer coccolithophore blooms. The latter started in the upper mixed la...

The paper explores the spatio-temporal features of cyanobacterial blooms in the Sea of Azov based on Landsat satellite data from 1999 to 2016. The strongest blooms were observed in 1999, 2006–2009, when cyanobacteria occupied the entire central part of the Sea of Azov. In these years peak blooms occurred in August-September. In 2006, the penetratio...

In this paper, we study the mechanisms of the formation and distribution of suspended matter (SM) near the western coast of Crimea under the impact of strong winds of various directions using medium-and high-resolution satellite data. The SM concentration was noted to reach its maximal values at southern winds, reaching values of 200 mg/L. The zone...

Введение. Суточные изменения температуры поверхности моря влияют на тепло- и газообмен океана с атмосферой, стратификацию и вертикальное перемешивание в верхнем слое. Материалы и методы. Используются данные сканера SEVIRI за 2015 г. о температуре поверхностного слоя Черного моря с дискретностью 1 ч. Анализ результатов. Прогрев верхнего слоя наблю...

Satellite and hydrological data were used to study the propagation of the Azov waters (Azov plume - AP) in the Black Sea, its relation to wind forcing, eddy dynamics, and water balance in the Azov and Black Seas. Strong north winds increase the inflow of the Azov waters in the basin and their further transport to the west along the Crimean coast. A...

В работе по спутниковым данным среднего и высокого разрешения исследуются механизмы образования и распространения взвешенного вещества (ВВ) у Западного берега Крыма при воздействии сильных ветров различных направлений. Было отмечено, что максимальные значения концентрация ВВ принимает при ветрах южного направления, достигая значений 200 мг/л. Зона...

There are a number of Black Sea ocean models which use one of the standard discretization schemes. None of the current methods are free from errors, the most well-known are either the pressure gradient force (for terrain following systems) and overmixing over the continental slope (for z-coordinate systems). Both methods are also prone to the conta...

Introduction. Heat and gas exchange between the ocean and the atmosphere, and stratification and vertical mixing in the sea upper layer are subjected to the diurnal variations of the sea surface temperature. Data and methods. The data obtained by the scanner SEVIRI in 2015 (time resolution is 1 hour) are used to study seasonal and spatial variabil...

Four consecutive strong wind events in August 2015 caused an anomalous phytoplankton bloom in the Black Sea, which occupied almost the entire eastern basin. Maximal surface chlorophyll A concentration (Chl-A) in the bloom area exceeded 5 mg/m3 in comparison with 0.6 mg/m3 in the surrounding waters. The anomalous bloom was observed for over 3 months...

The system based on the integrated use of satellite altimetry data and wind speed from atmospheric reanalyses is proposed for calculation and prediction the trajectories of moving objects in the World Ocean. The proposed method makes it possible to sufficiently determine the movement of oil pollution, suspensions on the sea surface and to assess th...

В настоящей работе на основе данных сенсоров спутников серии Landsat с 1999 по 2016 гг. исследованы пространственно-временные характеристики цветений цианобактерий в Азовском море. Отмечено, что наиболее сильные цветения наблюдались в 1999, 2006–2009 гг., когда цианобактерии занимали всю центральную часть Азовского моря. Максимум цветений в эти год...

В рамках работ по расширению функциональности Морского портала «ScanexMaritime» предполагалось выполнить ряд перспективных научно-технических разработок, которые объединяли ли бы в себе научные знания в области океанологических исследований и современные методы спутникового мониторинга.Одной из таких работ стало решение задачи по определению батиме...

Vertical entrainment of nutrients and phytoplankton from the subsurface layers in autumn – winter is a cause of the surface phytoplankton bloom in the Black Sea in winter. Relationship of the winter heat flux and the sea surface temperature (SST) with the integral and surface phytoplankton biomass is assessed based on a series of simulations perfor...

На основе серии расчетов одномерной физико-биогеохимической модели даны оценки связи интегральной и поверхностной биомассы фитопланктона с зимним потоком тепла и температурой поверхности моря. Результаты показывают, что интенсивность цветения в суровые зимы 50% выше, чем в теплые. Зимнее вовлечение биогенных элементов влияет и на биомассу фитопланк...

Vertical entrainment of nutrients and phytoplankton from the subsurface layers in autumn – winter is a reason of the surface phytoplankton bloom in the Black Sea in winter. Relationship of the winter heat flux and the sea surface temperature (SST) with the integral and surface phytoplankton biomass is assessed based on a series of simulations perfo...

Combination of altimetry-based method of eddy identification and historical hydrological measurements for 1992–2015 is used to analyze the thermohaline and dynamic structure of the Black Sea eddies and its relation with eddy intensity, eddy age and season of a year. Anticyclonic eddies (AEs) are characterized by negative salinity anomalies, which c...

Two remote sensing methods, satellite altimetry and 4D-Var assimilation of satellite imagery, are used to compute surface velocity fields in the Black Sea region. Surface currents derived from the two methods are compared for several cases with intense mesoscale and large-scale dynamics during low wind conditions. Comparison shows that the obtained...

To restore the missing surface temperature measurement data, a filtration algorithm is considered. It is based on the variational approach, the search for the extremum of a quadratic functional, the representation of a function that approximates the measurement data as an expansion in terms of orthogonal functions. The procedure is based on a flat...

The study is devoted to the variability of the Sivash Bay coastal area after the North-Crimean Canal, the main fresh water source in the northern and eastern Crimea from 1970s to 2014, that has been cut off. The Dnieper water flowed in the Canal and was used for industrial needs, agriculture, including irrigation of rice fields. New conditions for...

Ocean remote sensing has a 55-year long history in Russia counting from the first flight of Yuri Gagarin on Apr. 12, 1961. The article reviews a research done in the USSR and then in Russia in the field of ocean remote sensing in a dozen of research institutions. A review shows a history of remote sensing development and the obtained results in the...

Turbid and brackish Azov waters penetrating through the Kerch Strait significantly modify the biooptical and thermohaline features in North-Western part of the Black Sea. The Kerch Strait itself is another additional powerful source of suspended matter. Analysis of the high-resolution Landsat imagery and MODIS satellite data on the total suspended...

Проанализирован массив спутниковых данных о концентрации взвешенного вещества и температуре поверхности в шельфовой зоне российского сектора Черного моря. Показано, что чаще всего воды из Керченского пролива распространяются на запад в виде узкой струи, которая хорошо наблюдается в зимний период по измерениям в оптическом и инфракрасном диапазонах....

The propagation of the Danube River plume has strong interannual variability that impacts the local balance of nutrients and the thermohaline structure in the western Black Sea. In the present study, we use a particle-tracking model based on satellite altimetry measurements and wind reanalysis data, as well as satellite measurements (SeaWiFS, MODIS...

Since 2010, the P.P. Shirshov Institute of Oceanology RAS (SIO RAS) in Gelendzhik maintains the research (observational) site for year round multi-disciplinary studies and monitoring of the marine environment in the coastal zone. Analysis of the data obtained at the observational site revealed the existence of well pronounced short-term variability...

Sivash bay is the shallow-water lagoon of the Azov Sea. Restricted water exchange and high evaporation form Sivash as the basin with very high salinity. This factor leads to different from the Azov Sea thermal and ice regimes of Sivash. Maine aim of the study presented to investigate recent state and changes of the characteristics and processes in...

Satellite altimetry measurements show that the magnitude of the Black Sea sea level trends is spatially uneven. While the basin-mean sea level rise from 1993 to 2014 was about 3.15 mm yr-1, the local rates of sea level rise varied from 1.5–2.5 mm yr-1 in the central part to 3.5–3.8 mm yr-1 at the basin periphery and over the northwestern shelf and...

The phenology of the winter–spring phytoplankton bloom in the Black Sea was investigated on the basis of the satellite-derived chlorophyll concentration (Chl) for the recent 18-year period. Data for the 8-day Chl were analysed, together with changes in the nutrient concentration, sea surface temperature (SST), photosynthetically available radiation...

The inversion of the optical contrasts between the ripple and slick areas on the sea surface produced by natural processes is analyzed. It is shown that, depending on the solar zenith angle and the angle at which a spacecraft-mounted optical scanner observes the slick–ripple interface, the intensity of light reflected from the slick area may be eit...

Successive satellite images provide information about the changes in spatial structures measured in the optical range, especially by tracking the scattering suspended matter concentration. The joint use of the satellite data and passive admixtures transfer models is of interest in identifying the sources of suspended matter. The test example demons...

На основе климатического массива World Ocean Atlas-2009, массива альтиметрических данных аномалий уровня океана за 1993–2010 гг. исследована сезонная и межгодовая изменчивость переносов геострофических течений в Южном океане. Анализируется связь пространственно-временной изменчивости геострофических переносов с изменчивостью индексов атмосферной ци...

Sivash bay is the shallow-water lagoon of the Azov Sea. Restricted water exchange and high evaporation form Sivash as the basin with very high salinity. This factor leads to different from the Azov Sea thermal and ice regimes of Sivash. Maine aim of the study presented to investigate recent state and changes of the characteristics and processes in...

Since 2010, the P.P. Shirshov Institute of Oceanology RAS (SIO RAS) in Gelendzhik maintains the research (observational) site for year round multi-disciplinary studies and monitoring of the marine environment in the coastal zone. Analysis of the data obtained at the observational site revealed the existence of well pronounced short-term variability...

The present work is devoted to the development of a retrieval algorithm for the sea surface temperature from the two-channel measurements of the Landsat-8 satellite on the basis of a comparison with MODIS satellite data. The algorithm makes it possible to reconstruct the surface temperature with a 100 m resolution, which enables analysis of the spa...

The possibilities of a multiangle method of radar diagnostics to determine thickness of an oil film on a sea surface by comparing the radar data with the quantitative modeling results obtained using the model of oil spreading dynamics are analyzed. The experimental results of the remote sensing of the Caspian Sea water area near the Neftyanye Kamni...

We discuss the possibility of detecting deep convection in the Lofoten Basin of the Norwegian Sea based on the eddy structures revealed from the satellite data. Satellite altimetry, SAR imagery, and MODIS satellite spectral radiometer sea-surface temperature (SST) data are used in the analysis, along with the data of oceanographic Argo floats. It i...

Using satellite altimetry measurement data for 1993–2013, we study the spectral characteristics of Rossby waves in the Northwestern Pacific (25°–50° N, 140°–180° E). For each latitude degree, we draw integral plots of spectral power density calculated with a two-dimensional Fourier transform (2D-FFT). We compare the dispersion equations of Rossby w...

The seasonal and interannual variability of cloud fraction over the Black Sea region for the period of 1985–2009 is analyzed using the CM SAF dataset obtained from the satellite measurements of a high-resolution AVHRR instrument. The features of geographic distribution and seasonal variations in cloudiness are investigated. The causes for its spati...

Satellite altimetry measurements show that magnitude of the Black Sea level trends is spatially uneven. While the basin-averaged sea level was increasing at a rate of 3.15 mm/year from 1993 to 2014, the sea level rise varied from 0.15–2.5 mm/year in the central part to 3.5–3.8 mm/year in coastal areas and 5 mm/year in the southwestern part of the s...

Dynamical and thermohaline structure of the Black Sea eddies was investigated by means of the sattelite altimetry and profiling ARGO floats data. Estimates of cyclonic and anticyclonic movements influence to the basin's temperature and salinity fields' disturbances are given.

Two largest Siberian rivers — Ob and Yenisei inflow in the Arctic Ocean in the Kara Sea basin. Mixing of fresh river waters and saline sea waters leads to the formation of the large river plume with typical thickness about ~ 10 m, which can cover a considerable part of the basin. The paper is devoted to the study of interannual variability of the r...

On the basis of altimetry data, the dynamics of the interaction between the subtropical anticyclonic (SA) and subpolar cyclonic (SC) gyres of the North Atlantic is considered. It is shown that the westerlies in the lower troposphere represented by the North Atlantic Oscillation (NAO) index are the main factor responsible for the dynamics of the gyr...

The results of computation of wind wave fields for two versions of the WAM model (the original version of the European wind wave model WAM4 and its modified version WAM4-M) are compared with satellite measurements. The mapped data on the daily averaged wave height obtained from the data of combined measurements of several satellite altimeters are u...