A5037402098- Marine and environmental studies
- Marine and coastal ecosystems
- Aquatic and Environmental Studies
- Isotope Analysis in Ecology
- Food Industry and Aquatic Biology
- Oceanographic and Atmospheric Processes
- Atmospheric and Environmental Gas Dynamics
- Marine Biology and Ecology Research
- Arctic and Antarctic ice dynamics
- Oil Spill Detection and Mitigation
- Atmospheric aerosols and clouds
- Microbial Community Ecology and Physiology
- Water Quality Monitoring and Analysis
- Water Resources and Management
- Calibration and Measurement Techniques
- Atmospheric chemistry and aerosols
- Soil and Environmental Studies
- Environmental Monitoring and Data Management
- Marine Bivalve and Aquaculture Studies
- Advanced Image Fusion Techniques
- Ocean Acidification Effects and Responses
- Environmental Sustainability and Technology
- Infrared Target Detection Methodologies
- Satellite Image Processing and Photogrammetry
- Methane Hydrates and Related Phenomena
Marine Hydrophysical Institute
2015-2024
Russian Academy of Sciences
2018-2024
National Academy of Sciences of Ukraine
2011-2016
Marine Hydrophysical Institute
2003-2016
Sevastopol National Technical University
2011
The European Union's Marine Strategy Framework Directive (MSFD) seeks to achieve, for all seas, “Good Environmental Status” (GEnS), by 2020. Ecological models are currently one of the strongest approaches used predicting and understanding consequences anthropogenic climate-driven changes in natural environment. We assess most commonly capabilities modelling community provide information about indicators outlined MSFD, particularly on biodiversity, food webs, non-indigenous species seafloor...
The aim of this study is to modify the regional algorithm for Moderate Resolution Imaging Spectroradiometer (MODIS) and Medium-spectral Spectrometer (MERIS) bands using newly available data seasonal spatial variability light absorption by all optically active components in Black Sea, obtain a merged product based on retrieved from colour scanners that have operated since September 1997. Comparison chlorophyll-a concentration (chl-a) simulated standard National Aeronautics Space...
Standard NASA ocean color algorithm OC4 was developed on the basis of optical data and while appropriate for Case 1 oceanic waters could not be adequately applied Black Sea due to its different bio-optical properties. is shown overestimate chlorophyll concentration (Chl-a) in summer underestimate Chl-a during early spring phytoplankton blooms Sea. For correct conversion satellite Chl-a, primary production other indicators regional algorithms should taking into account properties waters....
According to observations over the past 20 years, oligotrophic Lake Teletskoye (Altai Republic) is undergoing gradual eutrophication, showing necessity of regular monitoring its ecological state. In August 2023, multiparametric hydrooptical studies were carried out on Teletskoye, including measurements spectral water upwelling radiance reflectance and underwater irradiance, as well sampling for laboratory determination chlorophyll a concentration. main part lake, maxima coefficient observed...
To solve inverse problems, in particular, the recovery of optically active substances from hydro-optical measurements, it is necessary to clearly understand nature these dependencies. The work analyzes such relationships between fluorescence dissolved organic matter, chlorophyll -a and beam attenuation coefficient at a wavelength 660 nm based on direct measurements performed Lake Teletskoye August 2023. It shown that waters belong so-called second type (CASE2) according Morel classification,...
The work analyzed measurements of the profile photosynthetically active radiation (PAR) in Lake Teletskoye, obtained August 2023. It was found that areas where rivers flow into lake, rate vertical attenuation is less than rest lake aquatorium. maximum values 0.577 m-1 were northern part minimum - 0.247 central exposed to river Chelyush runoff. All this indicates main source dissolved organic matter degradation processes itself, which are not associated with its supply due An estimate average...
Bio-optical studies were carried out in coastal waters around the Crimea peninsula different seasons 2016. It was shown that variability of chlorophyll a concentration (Chl-a), light absorption by suspended particles (a<sub>p</sub>(λ)), phytoplankton pigments (a<sub>ph</sub>(λ)), non-algal (a<sub>NAP</sub>(λ)) and colored dissolved organic matter (a<sub>CDOM</sub>(λ)) water high (~order magnitudes) all Relationships between a<sub>p</sub>(440), a<sub>ph</sub>(440)...
Bio-optical data, obtained during six cruises in the Black Sea carried out periods of seasonal stratification years between 1996 and 2016, have been used to parametrize phytoplankton light absorption (aphλ) deep chlorophyll maximum (DCM) layer located near bottom euphotic zone. Relationships aphλ sum chlorophyll-a phaeopigment concentrations (Chl-a) differed from those for summertime upper mixed (UML). Notably, a specific coefficients (aph∗λ) were lower DCM more comparable with aph∗λ values...
Long term (1996 – 2014) averaged annual dynamics of daily photosynthetically available radiation (PAR) incident on the surface Black Sea have been estimated for different degree sky coverage by cloudiness. To this aim PAR standard product color scanners (<i>OCTS, SeaWiFS, MODIS-Aqua/Terra</i>) has processed. The processing method was based assumption that temporal over one day corresponded to spatial variability in area scanned satellite instruments during overpass. data could be applied...
Abstract Chlorophyll a (Chl ) observations from satellites exhibit unimodal seasonal variation in the open Black Sea that peaks during winter, which has led to hypothesis phytoplankton production is sustained by convective mixing of nitrate deeper layers. We compiled situ carbon‐to‐Chl ratios for entire year, displaying an expected pattern ranging 46 February 195 mg C Chl −1 September. combined monthly with satellite obtain comprehensive proxy data set carbon biomass, and used this examine...
In this paper, we propose to analyze the values of “blue” color index for further use in additional atmospheric correction Level 2 remote sensing reflectance data waters Black Sea. Regardless seasonal phenomena, conditions, and type water, average short-wave region, according situ measurements CI(412/443), varies from 0.77 0.83. The most frequently observed value is 0.8. turn, CI(412/443) satellite MODIS Aqua/Terra, VIIRS SNPP, OLCI Sentinel 3A scanners showed a large scatter based on...
We develop a semiempirical spectral model of penetrating irradiance taking into account the biooptical characteristics Black Sea. The evaluation contributions principal optically active components to total absorption light in sea shows that, short-wave range (400–500 nm), is mainly absorbed by dissolved organic matter (41–77%). contribution phytoplankton attains its maximum values (26–37%) abyssal part period spring blooming diatoms. In coastal waters, suspended nonalgae particles summer...
In this study, a regional algorithm for retrieving Inherent Optical Properties (<i>IOPs</i>) has been developed the Black Sea using remote sensing reflectance at five wavelengths in visible spectral range corresponding to Sea-viewing Wide Field of View Sensor (<i>SeaWiFS</i>). The model retrieves signature particle backscattering coefficient 555 nm, <i>b</i><sub>bp</sub>(λ), and its slope, n<sub>p</sub>, total absorption colored detrital matter (sum dissolved non-algal particles,...
In August 2020, during the 80th cruise of R/V “Akademik Mstislav Keldysh”, chlorophyll a concentration (Chl-a) and spectral coefficients light absorption by phytoplankton pigments, non-algal particles (NAP) colored dissolved organic matter (CDOM) were measured in Norwegian Sea, Barents Sea adjacent area Arctic Ocean. It was shown that spatial distribution three light-absorbing components explored region non-homogenous. revealed CDOM contributed largely to total non-water (atot(λ) = aph(λ) +...
Для Черного моря проведено сравнение трех алгоритмов, стандартного NASA, Института океанологии им. П. Ширшова РАН и Морского гидрофизического института РАН, восстановления концентрации хлорофилла-а (С) по данным спутниковых измерений в видимом диапазоне спектра на основе доступных in situ за период с 1997 2015 гг. Результаты сравнения для сканеров SeaWiFS, MODIS- Aqua MODIS-Terra показали: 1) стандартный продукт NASA завышает С во всем его изменчивости Чёрном море, причём величина...
According to biophysical monitoring and satellite observations in the Sevastopol coastal zone since January 2009 till September 2012 seasonal interannual dynamics of phytoplankton development bioluminescence field produced by it, temperature salinity fields variability surface upper 60-m layers were analyzed. It was shown that anomalies (deviation from average level) sea led modifications taxonomical structure vertical field.
We study examples of surveys the Black Sea performed with help a SeaWiFS satellite instrument. It is shown that results measurements carried out in spectral channels 510 and 555 nm give information on basic specific features space time variability characteristics absorption scattering light seawater. The use channel 412 inefficient due to low reliability procedure atmospheric correction according standard algorithms. model calculations demonstrate predominant contribution summer made by...