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Papers by Vladimir Platonov

Вестник Московского университета. Серия 5. География, Nov 19, 2019

COSMO-CLM Russian Arctic climate dataset

COSMO-CLM Russian Arctic climate dataset

Atmosphere, Mar 8, 2021

Introducing a New Detailed Long-Term COSMO-CLM Hindcast for the Russian Arctic and the First Resu... more Introducing a New Detailed Long-Term COSMO-CLM Hindcast for the Russian Arctic and the First Results of Its Evaluation. Atmosphere 2021, 12, 350.

Atmospheric and climate science, 2019

Atmosphere, Feb 4, 2018

Urbanization leads to distinct meteorological features of urban environments, and one the best-kn... more Urbanization leads to distinct meteorological features of urban environments, and one the best-known is the urban heat island (UHI) effect. For megacities, these features become mesoscale phenomena (scale ≥ 10 km) that are amplified by the tropospheric feedbacks, and have substantial implications on human well-being. For the first time, a three-dimensional statistical description of the megacity-induced meteorological effects extending towards the lower troposphere for summer is acquired on a quasi-climatological timescale (a decade) based on high-resolution (1 km) simulations for Moscow with the COSMO-CLM model with and without its urban canopy model TERRA_URB. Our results confirm the features from previous observational and modeling studies, including the UHI itself, the cooling effect above established by the cross-over effect, the urban dry/moist islands and the urban breeze circulation. Particularly, the UHI shows a strong diurnal variation in terms of intensity and vertical extent between daytime (≈0.5 K/≈1.5 km) and nighttime (>3 K/≈150 m). We have discovered a systematic veering in the downwind shift of the UHI spatial pattern established by the Coriolis effect, and an enhanced stable stratification of the rural surroundings established by the urban plumes further downwind. Finally, extending the analysis to multiple summers demonstrates a substantial increase in summer precipitation (up to +25%) over the city center and its leeward side. These urban-caused mesoclimatic effects need to be taken into account in weather and climate services, including the design of future megacities.

Recurrence of extreme wind waves in the Kara Sea strongly influences the Arctic climate change. T... more Recurrence of extreme wind waves in the Kara Sea strongly influences the Arctic climate change. The paper presents the analysis of wave climate and storm activity in the Kara Sea based on the results of numerical modeling. A third-generation wave model WaveWatchIII is used to reconstruct wind wave fields on an unstructured grid with a spatial resolution of 15-20 km for the period from 1979 to 2017. The mean and maximum wave heights, wavelengths and periods are calculated. The maximum significant wave height (SWH) for the whole period amounts to 9.9 m. The average long-term SWH for the ice-free period does not exceed 1.3 m. The seasonal variability of the wave parameters is analyzed. The interannual variability of storm waves recurrence with different thresholds (from 3 to 7 m) was calculated. A significant linear trend shows an increase in the storm wave frequency for the period from 1979 to 2017. A double growth in the reccurence was observed for cases with an SWH more than 3-5 m from 1979 to 2017. The local maximum of the storm waves more than 3-4 m was observed in 1995, and the minimum in 1998. The maximum value (four cases) of the number of storms with an SWH threshold 7 m is registered in 2016. The frequency of wind speeds and ice conditions contributing to the storm waves formation were analyzed. It is shown that trends in the storm activity of the Kara Sea are primarily regulated by the ice. If the ice cover decreases in the southern part of the sea that leads to the increase of the number of events only with SWH threshold more than 3-4 m. If in the entire sea the ice cover decreases that leads already to increase of the extreme storms. The frequency of strong and long-term winds has high interannual variability and a weak positive trend. The analysis of distribution functions of the storm events with an SWH more than 3 m was carried out. Six different sectors of the Kara Sea were analyzed to reveal spatial differences. A comparison of the different distribution laws showed that the Pareto distribution is in the best agreement with the data. Up to 99% of the points are described by this distribution. However, the extreme events with an SWH more than 6-7 m deviate from the distribution, and their probability is approximately twice as less as that predicted by the Pareto distribution. Presumably, this deviation is caused by the combined impact of rare wind speed frequencies and anomalies of the sea ice conditions.

Proceedings of Irkutsk State Technical University, 2016

Russian Arctic COSMO-CLM hindcast 1998

COSMO-CLM Russian Arctic climate dataset

IOP Conference Series: Earth and Environmental Science, 2020

Complex shorelines and coastal relief strongly influence wind speeds. Since the Arctic is poorly ... more Complex shorelines and coastal relief strongly influence wind speeds. Since the Arctic is poorly covered by ground observations, one of the most reasonable approaches to investigating these events is hydrodynamical high-resolution modeling. In this work we apply a model COSMO-CLM to reproduce wind fields and characteristics in different rugged shore conditions. Some model experiments are designed with this regional climate non-hydrostatic atmospheric model COSMO-CLM to investigate the best configuration to reproduce the mesoscale circulations in the Arctic coastal zones considering different relief conditions on the example of the Kara Sea. Some mid-term experiments of a three-month timespan, Aug-Oct of 2012 and Jul-Sep of 2014, are conducted over the Arctic domain and specially over the Kara Sea region using a downscaling approach with ∼12 and ∼3 km horizontal grids. These periods are characterized by some storm events. The purpose of these experiments is to reproduce the surface w...

IOP Conference Series: Earth and Environmental Science, 2017

Journal of Morphology, 2020

The present study examined the subcutaneous muscle (m. cutaneus trunci) in a relict species Laona... more The present study examined the subcutaneous muscle (m. cutaneus trunci) in a relict species Laonastes aenigmamus (Diatomyidae) and in two ctenodactylids (Ctenodactylidae: Ctenodactylus gundi and Pectinator spekei), which are closely related to Laonastes according to current phylogenetic hypotheses. The comparative morphological analysis also included four representatives of Hystricognathi: Echimys sp., Proechimys sp., Cercomys cunicularis, and Hystrix indica. Laonastes and ctenodactylids have a number of common ancestral traits in the morphology of m. cutaneus trunci. This suggests that they are probably related to the ancestral forms of Ctenohystrica. However, the structural similarity of the subcutaneous muscle in Diatomyidae and Ctenodactylidae is based not only on plesiomorphic (presence of the medial head of m. cutaneus trunci), but also on an apomorphic (the development of the thoracoabdominal portion) feature which is common to both branches of Ctenohystrica (Ctenodactiloidea...

2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2019

The ongoing energy transition away from conventional energy generation to renewable energies dema... more The ongoing energy transition away from conventional energy generation to renewable energies demands for long distance connections with transmission lines and high energy cables. To reduce the risk of failures and outages the use of modern sensor and monitoring systems forces the implementation of fiber optic sensor systems. Fiber optic sensor systems are presented for the detection of acoustic partial discharges at cable connectors, switchgear and high energy transmission systems. Similar technology is used to assess the condition of circuit breaker. An additional application for photonic detection of partial discharges is shown too by the use of a photon sensitive fiber. Signal processing is applied for automated identification of defined patterns to separate partial discharges from noise for online monitoring as well as condition monitoring of circuit breaker based on acoustical analysis. All these modern techniques are presented for the use at energy transmission and distribution equipment.

Polish Journal of Sport and Tourism, 2019

Introduction. The aim of the study is to analyse existing tests for assessing agility in combat s... more Introduction. The aim of the study is to analyse existing tests for assessing agility in combat sports and martial arts, as well as to develop new tests and to test their effectiveness. Material and methods. The study involved 16 athletes at various competitive levels specialising in hand-to-hand combat. It used the following methods: review of specialised literature along with policy and normative documents, an expert survey, testing, instrumental methods of assessing psychophysical capabilities, a pedagogical experiment, and methods of mathematical statistics. Results. The article clearly delineates the concepts of “agility” and “coordination”. It was found that most of the exercise tests recommended for assessing agility actually only evaluate coordination, without taking into account unexpected and unpredictable situations, which are the key components of agility. While some tests allow for the assessment of agility, they are based on motor actions which are non-specific for com...

Science in Olympic Sport, 2018

Objective. To reveal and summarize the peculiarities of athlete preparation system functioning in... more Objective. To reveal and summarize the peculiarities of athlete preparation system functioning in the Netherlands. Methods. Analysis and generalization of data from scientific and documentary sources. Results. The main goal of sport development is to make the Netherlands among the top ten world’s leading sports countries. The development of sport is the responsibility of the National Olympic Committee with sports federations, in collaboration with the Ministry of Health, Social Welfare and Sport. Since 2004, the country has implemented four-year sports development programs. The main efforts are aimed at creating an effective and flexible organization of the sports sector with the introduction and application of modern principles of management and integrity; the achievement of stable and higher sport financing to make it financially secure, diversified and actively developing; the formation of an appropriate infrastructure; the development and implementation of training programs that...

Вестник Московского университета. Серия 5. География, Nov 19, 2019

COSMO-CLM Russian Arctic climate dataset

COSMO-CLM Russian Arctic climate dataset

Atmosphere, Mar 8, 2021

Introducing a New Detailed Long-Term COSMO-CLM Hindcast for the Russian Arctic and the First Resu... more Introducing a New Detailed Long-Term COSMO-CLM Hindcast for the Russian Arctic and the First Results of Its Evaluation. Atmosphere 2021, 12, 350.

Atmospheric and climate science, 2019

Atmosphere, Feb 4, 2018

Urbanization leads to distinct meteorological features of urban environments, and one the best-kn... more Urbanization leads to distinct meteorological features of urban environments, and one the best-known is the urban heat island (UHI) effect. For megacities, these features become mesoscale phenomena (scale ≥ 10 km) that are amplified by the tropospheric feedbacks, and have substantial implications on human well-being. For the first time, a three-dimensional statistical description of the megacity-induced meteorological effects extending towards the lower troposphere for summer is acquired on a quasi-climatological timescale (a decade) based on high-resolution (1 km) simulations for Moscow with the COSMO-CLM model with and without its urban canopy model TERRA_URB. Our results confirm the features from previous observational and modeling studies, including the UHI itself, the cooling effect above established by the cross-over effect, the urban dry/moist islands and the urban breeze circulation. Particularly, the UHI shows a strong diurnal variation in terms of intensity and vertical extent between daytime (≈0.5 K/≈1.5 km) and nighttime (>3 K/≈150 m). We have discovered a systematic veering in the downwind shift of the UHI spatial pattern established by the Coriolis effect, and an enhanced stable stratification of the rural surroundings established by the urban plumes further downwind. Finally, extending the analysis to multiple summers demonstrates a substantial increase in summer precipitation (up to +25%) over the city center and its leeward side. These urban-caused mesoclimatic effects need to be taken into account in weather and climate services, including the design of future megacities.

Recurrence of extreme wind waves in the Kara Sea strongly influences the Arctic climate change. T... more Recurrence of extreme wind waves in the Kara Sea strongly influences the Arctic climate change. The paper presents the analysis of wave climate and storm activity in the Kara Sea based on the results of numerical modeling. A third-generation wave model WaveWatchIII is used to reconstruct wind wave fields on an unstructured grid with a spatial resolution of 15-20 km for the period from 1979 to 2017. The mean and maximum wave heights, wavelengths and periods are calculated. The maximum significant wave height (SWH) for the whole period amounts to 9.9 m. The average long-term SWH for the ice-free period does not exceed 1.3 m. The seasonal variability of the wave parameters is analyzed. The interannual variability of storm waves recurrence with different thresholds (from 3 to 7 m) was calculated. A significant linear trend shows an increase in the storm wave frequency for the period from 1979 to 2017. A double growth in the reccurence was observed for cases with an SWH more than 3-5 m from 1979 to 2017. The local maximum of the storm waves more than 3-4 m was observed in 1995, and the minimum in 1998. The maximum value (four cases) of the number of storms with an SWH threshold 7 m is registered in 2016. The frequency of wind speeds and ice conditions contributing to the storm waves formation were analyzed. It is shown that trends in the storm activity of the Kara Sea are primarily regulated by the ice. If the ice cover decreases in the southern part of the sea that leads to the increase of the number of events only with SWH threshold more than 3-4 m. If in the entire sea the ice cover decreases that leads already to increase of the extreme storms. The frequency of strong and long-term winds has high interannual variability and a weak positive trend. The analysis of distribution functions of the storm events with an SWH more than 3 m was carried out. Six different sectors of the Kara Sea were analyzed to reveal spatial differences. A comparison of the different distribution laws showed that the Pareto distribution is in the best agreement with the data. Up to 99% of the points are described by this distribution. However, the extreme events with an SWH more than 6-7 m deviate from the distribution, and their probability is approximately twice as less as that predicted by the Pareto distribution. Presumably, this deviation is caused by the combined impact of rare wind speed frequencies and anomalies of the sea ice conditions.

Proceedings of Irkutsk State Technical University, 2016

Russian Arctic COSMO-CLM hindcast 1998

COSMO-CLM Russian Arctic climate dataset

IOP Conference Series: Earth and Environmental Science, 2020

Complex shorelines and coastal relief strongly influence wind speeds. Since the Arctic is poorly ... more Complex shorelines and coastal relief strongly influence wind speeds. Since the Arctic is poorly covered by ground observations, one of the most reasonable approaches to investigating these events is hydrodynamical high-resolution modeling. In this work we apply a model COSMO-CLM to reproduce wind fields and characteristics in different rugged shore conditions. Some model experiments are designed with this regional climate non-hydrostatic atmospheric model COSMO-CLM to investigate the best configuration to reproduce the mesoscale circulations in the Arctic coastal zones considering different relief conditions on the example of the Kara Sea. Some mid-term experiments of a three-month timespan, Aug-Oct of 2012 and Jul-Sep of 2014, are conducted over the Arctic domain and specially over the Kara Sea region using a downscaling approach with ∼12 and ∼3 km horizontal grids. These periods are characterized by some storm events. The purpose of these experiments is to reproduce the surface w...

IOP Conference Series: Earth and Environmental Science, 2017

Journal of Morphology, 2020

The present study examined the subcutaneous muscle (m. cutaneus trunci) in a relict species Laona... more The present study examined the subcutaneous muscle (m. cutaneus trunci) in a relict species Laonastes aenigmamus (Diatomyidae) and in two ctenodactylids (Ctenodactylidae: Ctenodactylus gundi and Pectinator spekei), which are closely related to Laonastes according to current phylogenetic hypotheses. The comparative morphological analysis also included four representatives of Hystricognathi: Echimys sp., Proechimys sp., Cercomys cunicularis, and Hystrix indica. Laonastes and ctenodactylids have a number of common ancestral traits in the morphology of m. cutaneus trunci. This suggests that they are probably related to the ancestral forms of Ctenohystrica. However, the structural similarity of the subcutaneous muscle in Diatomyidae and Ctenodactylidae is based not only on plesiomorphic (presence of the medial head of m. cutaneus trunci), but also on an apomorphic (the development of the thoracoabdominal portion) feature which is common to both branches of Ctenohystrica (Ctenodactiloidea...

2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2019

The ongoing energy transition away from conventional energy generation to renewable energies dema... more The ongoing energy transition away from conventional energy generation to renewable energies demands for long distance connections with transmission lines and high energy cables. To reduce the risk of failures and outages the use of modern sensor and monitoring systems forces the implementation of fiber optic sensor systems. Fiber optic sensor systems are presented for the detection of acoustic partial discharges at cable connectors, switchgear and high energy transmission systems. Similar technology is used to assess the condition of circuit breaker. An additional application for photonic detection of partial discharges is shown too by the use of a photon sensitive fiber. Signal processing is applied for automated identification of defined patterns to separate partial discharges from noise for online monitoring as well as condition monitoring of circuit breaker based on acoustical analysis. All these modern techniques are presented for the use at energy transmission and distribution equipment.

Polish Journal of Sport and Tourism, 2019

Introduction. The aim of the study is to analyse existing tests for assessing agility in combat s... more Introduction. The aim of the study is to analyse existing tests for assessing agility in combat sports and martial arts, as well as to develop new tests and to test their effectiveness. Material and methods. The study involved 16 athletes at various competitive levels specialising in hand-to-hand combat. It used the following methods: review of specialised literature along with policy and normative documents, an expert survey, testing, instrumental methods of assessing psychophysical capabilities, a pedagogical experiment, and methods of mathematical statistics. Results. The article clearly delineates the concepts of “agility” and “coordination”. It was found that most of the exercise tests recommended for assessing agility actually only evaluate coordination, without taking into account unexpected and unpredictable situations, which are the key components of agility. While some tests allow for the assessment of agility, they are based on motor actions which are non-specific for com...

Science in Olympic Sport, 2018

Objective. To reveal and summarize the peculiarities of athlete preparation system functioning in... more Objective. To reveal and summarize the peculiarities of athlete preparation system functioning in the Netherlands. Methods. Analysis and generalization of data from scientific and documentary sources. Results. The main goal of sport development is to make the Netherlands among the top ten world’s leading sports countries. The development of sport is the responsibility of the National Olympic Committee with sports federations, in collaboration with the Ministry of Health, Social Welfare and Sport. Since 2004, the country has implemented four-year sports development programs. The main efforts are aimed at creating an effective and flexible organization of the sports sector with the introduction and application of modern principles of management and integrity; the achievement of stable and higher sport financing to make it financially secure, diversified and actively developing; the formation of an appropriate infrastructure; the development and implementation of training programs that...