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Artykuły w czasopismach na temat „Ocean-atmosphere interaction Mathematical models”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 stycznia 2023

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1

Qiao, Fangli, Yeli Yuan, Jia Deng, Dejun Dai, and Zhenya Song. "Wave–turbulence interaction-induced vertical mixing and its effects in ocean and climate models." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2065 (April 13, 2016): 20150201. http://dx.doi.org/10.1098/rsta.2015.0201.

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Heated from above, the oceans are stably stratified. Therefore, the performance of general ocean circulation models and climate studies through coupled atmosphere–ocean models depends critically on vertical mixing of energy and momentum in the water column. Many of the traditional general circulation models are based on total kinetic energy (TKE), in which the roles of waves are averaged out. Although theoretical calculations suggest that waves could greatly enhance coexisting turbulence, no field measurements on turbulence have ever validated this mechanism directly. To address this problem,

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Ostroukh, Andrey, Andrey Mavrin, and Nataliya Surkova. "Technological Processes Automation of Chemical Heat Treatment at Industrial Enterprises." Advanced Materials Research 1098 (April 2015): 120–25. http://dx.doi.org/10.4028/www.scientific.net/amr.1098.120.

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This paper presents analysis of chemical and thermal processing (CTP) methods to support multi-component gas atmosphere processes and their mathematical models as objects in the automated process control system (APCS). CTP mathematical models, algorithms, interaction structures and concepts of APCS components based on a specialized electronic controller have been proposed and implemented. The system provides a time control of all the necessary gas atmosphere parameters – its composition, temperature, pressure, with the possibility of using saturating medium of up to four components. Implementa

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Mehra, Vinayak, Varun Gupta, and Pradeep Khanna. "MATHEMATICAL MODELLING TO PREDICT ANGULAR DISTORTION IN MIG WELDING OF STAINLESS STEEL 202 PLATES." Journal of Production Engineering 23, no. 2 (December 30, 2020): 16–20. http://dx.doi.org/10.24867/jpe-2020-02-016.

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In present research, mathematical models have been established to predict the angular distortion in Metal Inert Gas(MIG) welding for 6mm plates of SS 202 grade for butt welded joints. The filler metal used was a continuously fed solid metal wire of stainless steel (304L).100% Argon gas was used to serve the purpose of shielding the weld pool from the atmosphere as it does not dissociate at high temperatures. This prevented any turbulence in the welding arc and deterioration in weld quality. To obtain experimental samples, the design matrix was developed using the statistical technique of centr

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Li, Ke Hua, Jin Yong Yu, and Jun Wei Lei. "Research on Modeling and Simulation of Sonar Performance Using Simulink." Applied Mechanics and Materials 138-139 (November 2011): 804–9. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.804.

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With respect to different weather and sea conditions, the acoustic model under ocean environment was proposed by analyzing the interaction characteristics between sonar and environment. Based on the sonar equation, the performance mathematical models of active and passive sonar were produced with considering acoustic characteristics of the target and parameters of the marine environment. Simulation results of target detection performance for different target types, sonar parameters and sea conditions show the validity of the proposed model.

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TURCANU, Alexandru, and Leonard-Călin-Valentin DOBRE. "DIMENSIONAREA SISTEMULUI DE PROPULSIE AL UNUI VEHICUL ELECTRIC. STUDIU DE CAZ." "ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)" 2020, no. 1 (February 10, 2021): 1–14. http://dx.doi.org/10.36801/apme.2020.1.4.

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This paper aims to present to readers concrete mathematical models, transposed into simulation schemes, to calculate the forces acting on a car at its interaction with the road and the atmosphere, to properly size the electric motor and batteries of an electric car. For the calculation of these forces, a table with predefined values such as vehicle mass, rolling resistance coefficient, gear ratio, wheel radius, was used throughout the work. In the second section of the paper, the values of the resistance forces that oppose the movement of the vehicle and the traction force necessary to ove

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Heywood, Karen J., Sunke Schmidtko, Céline Heuzé, Jan Kaiser, Timothy D. Jickells, Bastien Y. Queste, David P. Stevens, et al. "Ocean processes at the Antarctic continental slope." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, no. 2019 (July 13, 2014): 20130047. http://dx.doi.org/10.1098/rsta.2013.0047.

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The Antarctic continental shelves and slopes occupy relatively small areas, but, nevertheless, are important for global climate, biogeochemical cycling and ecosystem functioning. Processes of water mass transformation through sea ice formation/melting and ocean–atmosphere interaction are key to the formation of deep and bottom waters as well as determining the heat flux beneath ice shelves. Climate models, however, struggle to capture these physical processes and are unable to reproduce water mass properties of the region. Dynamics at the continental slope are key for correctly modelling clima

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7

Mukhartova, Iuliia, Alexander Krupenko, Polina Mangura, and Alexander Olchev. "Mathematical Modeling of Vegetation Heterogeneity and Complex Topography Effects on Turbulent Exchange of GHG within the Atmospheric Surface Layer." Proceedings 2, no. 20 (October 17, 2018): 1310. http://dx.doi.org/10.3390/proceedings2201310.

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The local-scale 2D and 3D models of greenhouse gases (GHG) exchange between a non-uniform land surface and the atmosphere were developed. They are based on solution of the system of averaged Navier-Stokes, continuity and diffusion-advection equations. For numerical solution of the differential equations the stable finite-difference schemes were suggested. The models were applied to derive effects of complex topography and vegetation heterogeneity on 2D-3D air flow patterns, as well as on CO2 exchange within the atmospheric surface layer. Several numerical experiments were also provided to desc

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8

Kovalnogov, Vladislav N., Yuriy A. Khakhalev, Ekaterina V. Tsvetova, and Larisa V. Khakhaleva. "MATHEMATICAL MODELING AND NUMERICAL STUDY OF ATMOSPHERIC BOUNDARY LAYER NEAR WINDFARMS." Автоматизация процессов управления 3, no. 65 (2021): 33–40. http://dx.doi.org/10.35752/1991-2927-2021-3-65-33-40.

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The article analyzes Russian and foreign sources relating to the interaction of wind turbines with the surface layers of the atmosphere. It specifies the main problems of mathematical modeling of the atmospheric boundary layer near the wind farms due to adverse meteorological conditions, in particular, constant zero crossings in the autumn-winter period, various precipitation, a wide time range, air parameters, terrain and other features. The authors analyze the evolution of mathematical models of turbulence to describe the boundary layer near wind turbines from earlier to rapidly developing a

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9

Sangale, Bhagwan, U. M. Khodke H. W. Awari, and Vishal Ingle. "Crop Growth Simulation Modelling - A Review." International Journal of Current Microbiology and Applied Sciences 11, no. 1 (January 10, 2022): 78–84. http://dx.doi.org/10.20546/ijcmas.2022.1101.010.

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Agriculture plays a key role in overall economic and social wellbeing of the specially developing countries. Now it is the right option to increase the quality and quantity of food production through the technological and managerial interventions like crop growth and yield prediction models. Agricultural models are mathematical equations that represent the reactions that occur within the plant and the interactions between the plant and its environment. The model simulates or imitates the behaviour of real crop by predicting the growth of its components, such as leaves, roots, stems and grains.

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Gusev, E. M., and O. N. Nasonova. "Simulating of snow cover formation by the model of interaction between the land surface and the atmosphere (SWAP)." Ice and Snow 59, no. 2 (June 11, 2019): 167–81. http://dx.doi.org/10.15356/2076-6734-2019-2-401.

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In framework of the project «The Earth system Models – Snow Models Intercomparison Project» (ESMSnowMIP), calculations of snow storages were carried out on ten experimental sites organized for longterm monitoring of the snow cover variability in various regions of the globe. The calculation method is based on the physical and mathematical description of heat and moisture exchange processes occurring within the system «ground water – soil – vegetation cover/snow cover – surface layer of the atmosphere», and it is implemented in the form of the model of interaction between the land surface and t

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11

Popov, O., A. Iatsyshyn, V. Kovach, V. Artemchuk, D. Taraduda, V. Sobyna, D. Sokolov, et al. "Physical Features of Pollutants Spread in the Air During the Emergency at NPPs." Nuclear and Radiation Safety, no. 4(84) (December 19, 2019): 88–98. http://dx.doi.org/10.32918/nrs.2019.4(84).11.

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The authors carried out a thorough study of the features of the spread of hazardous chemicals in the surface layer of the atmosphere in the event of an emergency at the site of a nuclear power plant. In order to ensure the continuous operation of the stations in their territories, various ancillary technogenic facilities are located and operate, which release emissions of non-radiation pollutants into the atmosphere. Under various negative circumstances of a technical and natural nature, emergencies may occur due to significant chemical pollution of the atmospheric air in and outside the sanit

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12

LINTON, C. M. "Towards a three-dimensional model of wave–ice interaction in the marginal ice zone." Journal of Fluid Mechanics 662 (October 15, 2010): 1–4. http://dx.doi.org/10.1017/s0022112010004258.

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Over the past forty or so years, considerable advances have been made in our understanding of the effects of ocean waves on sea ice, and vice versa, with observations, experiments and theory all playing their part. Recent years have seen the development of ever more sophisticated mathematical models designed to represent the physics more accurately and incorporate new features. What is lacking is an approach to three-dimensional scattering for ice floes that is both accurate and efficient enough to be used as a component in a theory designed to model the passage of directional wave spectra thr

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13

Qi, Di, and Andrew J. Majda. "Low-Dimensional Reduced-Order Models for Statistical Response and Uncertainty Quantification: Two-Layer Baroclinic Turbulence." Journal of the Atmospheric Sciences 73, no. 12 (November 9, 2016): 4609–39. http://dx.doi.org/10.1175/jas-d-16-0192.1.

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Abstract Accurate uncertainty quantification for the mean and variance about forced responses to general external perturbations in the climate system is an important subject in understanding Earth’s atmosphere and ocean in climate change science. A low-dimensional reduced-order method is developed for uncertainty quantification and capturing the statistical sensitivity in the principal model directions with largest variability and in various regimes in two-layer quasigeostrophic turbulence. Typical dynamical regimes tested here include the homogeneous flow in the high latitudes and the anisotr

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14

Rombouts, J., and M. Ghil. "Oscillations in a simple climate–vegetation model." Nonlinear Processes in Geophysics 22, no. 3 (May 7, 2015): 275–88. http://dx.doi.org/10.5194/npg-22-275-2015.

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Abstract. We formulate and analyze a simple dynamical systems model for climate–vegetation interaction. The planet we consider consists of a large ocean and a land surface on which vegetation can grow. The temperature affects vegetation growth on land and the amount of sea ice on the ocean. Conversely, vegetation and sea ice change the albedo of the planet, which in turn changes its energy balance and hence the temperature evolution. Our highly idealized, conceptual model is governed by two nonlinear, coupled ordinary differential equations, one for global temperature, the other for vegetation

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Rombouts, J., and M. Ghil. "Oscillations in a simple climate–vegetation model." Nonlinear Processes in Geophysics Discussions 2, no. 1 (February 2, 2015): 145–78. http://dx.doi.org/10.5194/npgd-2-145-2015.

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Abstract. We formulate and analyze a simple dynamical systems model for climate–vegetation interaction. The planet we consider consists of a large ocean and a land surface on which vegetation can grow. The temperature affects vegetation growth on land and the amount of sea ice on the ocean. Conversely, vegetation and sea ice change the albedo of the planet, which in turn changes its energy balance and hence the temperature evolution. Our highly idealized, conceptual model is governed by two nonlinear, coupled ordinary differential equations, one for global temperature, the other for vegetation

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16

Rozhdestvensky, Kirill. "Study of Underwater and Wave Gliders on the Basis of Simplified Mathematical Models." Applied Sciences 12, no. 7 (March 29, 2022): 3465. http://dx.doi.org/10.3390/app12073465.

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Both underwater and wave gliders are known as autonomous unmanned energy-saving vehicles which have recently found applications for monitoring the world ocean. The paper under consideration discusses simplified mathematical models of these platforms enabling the straightforward parametric investigation into relationships between their parameters and performance. In its first part the paper discusses equations describing the motion of an underwater glider (UG) in a vertical plane as a basis for derivations relating geometric, kinematic and hydrodynamic characteristics of UG and its lifting syst

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17

Yao, Tandong, Fuyuan Wu, Lin Ding, Jimin Sun, Liping Zhu, Shilong Piao, Tao Deng, Xijun Ni, Hongbo Zheng, and Hua Ouyang. "Multispherical interactions and their effects on the Tibetan Plateau's earth system: a review of the recent researches." National Science Review 2, no. 4 (December 1, 2015): 468–88. http://dx.doi.org/10.1093/nsr/nwv070.

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Abstract The Tibetan Plateau (TP) is a regional Earth system showing very strong interactions among its lithosphere, hydrosphere, cryosphere, biosphere, atmosphere, and anthrosphere. These interactions manifest TP's impact on surrounding regions and reflect TP's response to the global change. Quantifying the multispherical interactions is critically important to understand the TP environment. Our recent years researches including the ongoing program entitled ‘Tibetan Multi-Spheres Interactions and Their Resource-Environment Significance (TIMI)’, the completed program entitled. ‘Paleo-Altitudes

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18

Kumar, Sachin, and Brij Mohan. "A study of multi-soliton solutions, breather, lumps, and their interactions for kadomtsev-petviashvili equation with variable time coeffcient using hirota method." Physica Scripta 96, no. 12 (November 24, 2021): 125255. http://dx.doi.org/10.1088/1402-4896/ac3879.

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Abstract This paper investigates the new KP equation with variable coefficients of time ‘t’, broadly used to elucidate shallow water waves that arise in plasma physics, marine engineering, ocean physics, nonlinear sciences, and fluid dynamics. In 2020, Wazwaz [1] proposed two extensive KP equations with time-variable coefficients to obtain several soliton solutions and used Painlevé test to verify their integrability. In light of the research described above, we chose one of the integrated KP equations with time-variable coefficients to obtain multiple solitons, rogue waves, breather waves, lu

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Mohsin, Muhammad, Qiang Zhu, Sobia Naseem, Muddassar Sarfraz, and Larisa Ivascu. "Mining Industry Impact on Environmental Sustainability, Economic Growth, Social Interaction, and Public Health: An Application of Semi-Quantitative Mathematical Approach." Processes 9, no. 6 (May 30, 2021): 972. http://dx.doi.org/10.3390/pr9060972.

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The mining industry plays a significant role in economic growth and development. Coal is a viable renewable energy source with 185.175 billion deposits in Thar, which has not been deeply explored. Although coal is an energy source and contributes to economic development, it puts pressure on environmental sustainability. The current study investigates Sindh Engro coal mining’s impact on environmental sustainability and human needs and interest. The Folchi and Phillips Environmental Sustainability Mathematics models are employed to measure environmental sustainability. The research findings demo

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Bulhakov, Ruslan, Vyacheslav Holovan, Artur Holovan, and Stanislav Nikul. "MODEL OF WEAPONS AND MILITARY EQUIPMENT DEVELOPMENT." Collection of scientific works of Odesa Military Academy, no. 15 (September 30, 2021): 58–64. http://dx.doi.org/10.37129/2313-7509.2021.15.58-64.

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At present, in the field of view of domestic researchers are left without consideration of the complex indicators of the weapons system and military equipment, as well as the possibility of managerial influence on them. A complex system of armaments and military equipment has a significant number of interrelated properties and qualities, among which it is necessary to distinguish between simple and integral qualities. To describe the processes of development of the armament system and military equipment, which include not only quantitative changes in it, but also qualitatively new behavior, no

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Landsburg, Alexander C., Roderick A. Barr, Larry Daggett, Wei-Yuan Hwang, Bent Jakobsen, Mike Morris, and Lou Vest. "Critical Needs for Ship Maneuverability: Lessons From the Houston Ship Channel Full-Scale Maneuvering Trials." Marine Technology and SNAME News 42, no. 01 (January 1, 2005): 11–20. http://dx.doi.org/10.5957/mt1.2005.42.1.11.

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"I think the architects and engineers that design ships for the sea, where they spend 99% of their time, forget that at some point they still have to get up the ditches to load or discharge their cargo. Someday when a high-profile accident does occur, ship builders might even be brought into the civil arena and found criminally negligent and liable for building underpowered and poor handling ships."A pilot's view The Standards for Ship Maneuverability approved by the International Maritime Organization (IMO) in 2002 represent a significant step forward in ensuring adequate maneuverability of s

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Mohapatra, Sarat Chandra, Hafizul Islam, Thiago S. Hallak, and C. Guedes Soares. "Solitary Wave Interaction with a Floating Pontoon Based on Boussinesq Model and CFD-Based Simulations." Journal of Marine Science and Engineering 10, no. 9 (September 5, 2022): 1251. http://dx.doi.org/10.3390/jmse10091251.

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A mathematical model of solitary wave interaction with a pontoon-type rigid floating structure over a flat bottom is formulated based on Boussinesq-type equations under weakly nonlinear dispersive waves. Based on the higher-order Boussinesq equations, the solitary wave equation is derived, and a semi-analytical solution is obtained using the perturbation technique. On the other hand, brief descriptions of the application of wave2Foam and OceanWave3D on the aforementioned problem are presented. The analytical solitary wave profiles in the outer region are compared with Computational Fluid Dynam

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Starchenko, A. V., A. A. Bart, L. I. Kizhner, and E. A. Danilkin. "MESOSCALE METEOROLOGICAL MODEL TSUNM3 FOR THE STUDY AND FORECAST OF METEOROLOGICAL PARAMETERS OF THE ATMOSPHERIC SURFACE LAYER OVER A MAJOR POPULATION CENTER." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 66 (2020): 35–55. http://dx.doi.org/10.17223/19988621/66/3.

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The paper describes the mathematical formulation and numerical method of the TSUNM3 high-resolution mesoscale meteorological model being developed at Tomsk State University. The model is nonhydrostatic and includes three-dimensional nonstationary equations of hydrothermodynamics of the atmospheric boundary layer with parameterization of turbulence, moisture microphysics, long-wave and short-wave (solar) radiation, and advective and latent heat flows in the atmosphere and at the boundary of its interaction with the underlying surface. The numerical algorithm is constructed using structured grid

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Fong, Peter. "Influence Of Ice Sheets On Climate and Ice-Sheet Dynamics." Annals of Glaciology 14 (1990): 335. http://dx.doi.org/10.3189/s026030550000896x.

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The important role played by ice on climate is recognized in the ice–albedo feedback effect which is incorporated in most climate models. But the ice under consideration is two-dimensional and only its surface area enters into the interaction. Whereas this applies well to the seasonal ice and sea ice, it does not to the permanent ice sheets on earth because they are three-dimensional. A new feature is the ice flow down the ice-sheet slope. This increases the amount of ice on the ice-sheet periphery above that produced by local precipitation that is considered in most climate models. As a resul

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Fong, Peter. "Influence Of Ice Sheets On Climate and Ice-Sheet Dynamics." Annals of Glaciology 14 (1990): 335. http://dx.doi.org/10.1017/s026030550000896x.

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The important role played by ice on climate is recognized in the ice–albedo feedback effect which is incorporated in most climate models. But the ice under consideration is two-dimensional and only its surface area enters into the interaction. Whereas this applies well to the seasonal ice and sea ice, it does not to the permanent ice sheets on earth because they are three-dimensional. A new feature is the ice flow down the ice-sheet slope. This increases the amount of ice on the ice-sheet periphery above that produced by local precipitation that is considered in most climate models. As a resul

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He, Wei, Jinyu Lei, Xiumin Chu, Shuo Xie, Cheng Zhong, and Zhixiong Li. "A Visual Analysis Approach to Understand and Explore Quality Problems of AIS Data." Journal of Marine Science and Engineering 9, no. 2 (February 13, 2021): 198. http://dx.doi.org/10.3390/jmse9020198.

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Low quality automatic identification system (AIS) data often mislead analysts to a misunderstanding of ship behavior analysis and to making incorrect navigation risk assessments. It is therefore necessary to accurately understand and judge the quality problems in AIS data before a further analysis of ship behavior. Outliers were filtered in the existing methods of AIS quality analysis based only on mathematical models where AIS data related quality problems are not utilized and there is a lack of visual exploration. Thus, the human brain’s ability cannot be fully utilized to think visually and

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Waghmare, Roji B., Pramod V. Mahajan, and Uday S. Annapure. "Modelling the Influence of Time and Temperature on Respiration Rate of Fresh Fig and Diced Papaya." International Journal of Food Engineering 10, no. 1 (January 10, 2014): 89–96. http://dx.doi.org/10.1515/ijfe-2013-0047.

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Abstract For the design of modified atmosphere packaging, it is necessary to know the influence of time and temperature on the respiration rate (RR) of fresh produce. RR of fresh fig and diced papaya was measured at three temperatures (10, 20 and 30°C) for storage time of 1–5 days under aerobic condition using closed system method. The aim was to determine the influences of storage temperature and time on RR of fresh fig and diced papaya. It develops and validates a combined predictive mathematical model based on the Arrhenius equation and Weibull distribution model. Temperature and time had a

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Rastigejev, Yevgenii, and Sergey A. Suslov. "Investigation of Sea Spray Effect on the Vertical Momentum Transport Using an Eulerian Multifluid-Type Model." Journal of Physical Oceanography 52, no. 1 (January 2022): 99–117. http://dx.doi.org/10.1175/jpo-d-21-0127.1.

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Abstract The Eulerian multifluid mathematical model is developed to describe the marine atmospheric boundary layer laden with sea spray under the high-wind condition of a hurricane. The model considers spray and air as separate continuous interacting turbulent media and employs the multifluid E–ϵ closure. Each phase is described by its own set of coupled conservation equations and characterized by its own velocity. Such an approach enables us to accurately quantify the interaction between spray and air and pinpoint the effect of spray on the vertical momentum transport much more precisely than

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Pasricha, M. S. "Effect of Damping on Parametrically Excited Torsional Vibrations of Reciprocating Engines Including Gas Forces." Journal of Ship Research 50, no. 02 (June 1, 2006): 147–57. http://dx.doi.org/10.5957/jsr.2006.50.2.147.

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In recent years, several cases of secondary resonance have been found in torsional vibrations of crankshaft systems. In some reciprocating large marine diesel engine systems, these effects have been a contributing factor of catastrophic failures. In these instances, design based on invariable inertia characteristics of the systems and using constant damping could not project the existence of adverse situations that led to excessively large motions. Most of the mathematical models considered thus far either give limited information on the effects of damping or restrict the analysis to an undamp

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Buendía, C., A. Kleidon, and A. Porporato. "The role of tectonic uplift, climate and vegetation in the long-term terrestrial phosphorous cycle." Biogeosciences Discussions 7, no. 1 (January 14, 2010): 301–33. http://dx.doi.org/10.5194/bgd-7-301-2010.

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Abstract. Phosphorus (P) is a crucial element for life and therefore for maintaining ecosystem productivity. Its local availability to the terrestrial biosphere results from the interaction between climate, tectonic uplift, atmospheric transport and biotic cycling. Here we present a mathematical model that describes the terrestrial P-cycle in a simple but comprehensive way. The resulting dynamical system can be solved analytically for steady-state conditions, allowing us to test the sensitivity of the P-availability to the key parameters and processes. Given constant inputs, we find that humid

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Kaimov, Abylay, Yerzhan Syrgaliyev, Amandyk Tuleshov, Suleimen Kaimov, Talgat Kaiym, Aidarkhan Kaimov, and Altynay Primbetova. "Creation of an innovative robot with a gripper for moving plant microshoots from the in vitro transport tank to the working tank with soil ground at the stage of their adaptation in soil ground during microclonal reproduction." Eastern-European Journal of Enterprise Technologies 1, no. 7(115) (February 28, 2022): 48–58. http://dx.doi.org/10.15587/1729-4061.2022.253135.

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The industrial development of cities is the main cause of the destruction and degradation of natural resources around the world. Urbanization negatively affects the species composition of plants, the atmosphere and soil cover of areas of populated areas of large cities of the World. Tree plantations are the main mechanism for stabilizing the ecological situation in large cities and arid territories of the countries of the World. In this regard, in order to obtain a large number of genetically identical plants using their micropropagation, it is necessary to automate the main stages of this tec

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Moulin, A., and A. Wirth. "A Drag-Induced Barotropic Instability in Air–Sea Interaction." Journal of Physical Oceanography 44, no. 2 (February 1, 2014): 733–41. http://dx.doi.org/10.1175/jpo-d-13-097.1.

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Abstract A new mechanism that induces barotropic instability in the ocean is discussed. It is due to the air–sea interaction with a quadratic drag law and horizontal viscous dissipation in the atmosphere. The authors show that the instability spreads to the atmosphere. The preferred spatial scale of the instability is that of the oceanic baroclinic Rossby radius of deformation. It can only be represented in numerical models, when the dynamics at this scale is resolved in the atmosphere and ocean. The dynamics are studied using two superposed shallow water layers: one for the ocean and one for

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Moreira, Virnei Silva, Luiz Antonio Candido, Debora Regina Roberti, Geovane Webler, Marcelo Bortoluzzi Diaz, Luis Gustavo Gonçalves de Gonçalves, Raphael Pousa, and Gervásio Annes Degrazia. "Influence of Soil Properties in Different Management Systems: Estimating Soybean Water Changes in the Agro-IBIS Model." Earth Interactions 22, no. 4 (March 1, 2018): 1–19. http://dx.doi.org/10.1175/ei-d-16-0033.1.

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Abstract The water balance in agricultural cropping systems is dependent on the physical and hydraulic characteristics of the soil and the type of farming, both of which are sensitive to the soil management. Most models that describe the interaction between the surface and the atmosphere do not efficiently represent the physical differences across different soil management areas. In this study, the authors analyzed the dynamics of the water exchange in the agricultural version of the Integrated Biosphere Simulator (IBIS) model (Agro-IBIS) in the presence of different physical soil properties b

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Sinaga, Luhut Tumpal Parulian. "MODEL ANALITIK SLOSHING TANGKI- MUAT PADA OLAH GERAK KAPAL FLOATING LIQUEFIED NATURAL GAS (FLNG) = ANALITICAL MODEL OF SLOSHING IN STORAGE TANK ON FLOATING LIQUEFIED NATURAL GAS (FLNG) SHIP MOTION." Majalah Ilmiah Pengkajian Industri 9, no. 1 (June 16, 2015): 1–12. http://dx.doi.org/10.29122/mipi.v9i1.90.

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Studies on the effect of sloshing motion and heave coupling picth after receiving an external force wage varying wave energy and angular variation headings. This study will conduct a study of physical model testing with mooring configuration and MAT-LAB program of mathematical models free floating barge matika mechanism through numerical simulations and computational fluid dynamic (CFD). This riset aims to observe and explain the effect of sloshing on ship motions and the interaction with the research methodology systematically carried through the calculation/numerical simulations (Mathematics

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MOSQUERA CUESTA, HERMAN J. "AN ORIGIN FOR THE MAIN PULSATION AND OVERTONES OF SGR1900+14 DURING THE AUGUST 27 (1998) SUPEROUTBURST." International Journal of Modern Physics D 14, no. 09 (September 2005): 1485–94. http://dx.doi.org/10.1142/s0218271805007012.

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The crucial observation on the occurrence of subpulses (overtones) in the Power Spectral Density of the August 27 (1998) event from SGR1900+14, as discovered by BeppoSAX,7 has received no consistent explanation in the context of the competing theories to explain the SGRs phenomenology: the magnetar and accretion-driven models. Based on the ultra-relativistic, ultracompact X-ray binary model introduced in the accompanying paper,20 I present here a self-consistent explanation for such an striking feature. I suggest that both the fundamental mode and the overtones observed in SGR1900+14 stem from

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Krakauer, Nir Y., Michael J. Puma, Benjamin I. Cook, Pierre Gentine, and Larissa Nazarenko. "Ocean–atmosphere interactions modulate irrigation's climate impacts." Earth System Dynamics 7, no. 4 (November 10, 2016): 863–76. http://dx.doi.org/10.5194/esd-7-863-2016.

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Abstract. Numerous studies have focused on the local and regional climate effects of irrigated agriculture and other land cover and land use change (LCLUC) phenomena, but there are few studies on the role of ocean–atmosphere interaction in modulating irrigation climate impacts. Here, we compare simulations with and without interactive sea surface temperatures of the equilibrium effect on climate of contemporary (year 2000) irrigation geographic extent and intensity. We find that ocean–atmosphere interaction does impact the magnitude of global-mean and spatially varying climate impacts, greatly

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Wirth, Achim. "On fluctuating momentum exchange in idealised models of air–sea interaction." Nonlinear Processes in Geophysics 26, no. 4 (December 16, 2019): 457–77. http://dx.doi.org/10.5194/npg-26-457-2019.

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Abstract. The dynamics of three local models, for momentum transfer at the air–sea interface, is compared. The models differ by whether or not the ocean velocity is included in the shear calculation applied to the ocean and the atmosphere. All three cases are employed in climate or ocean simulations. Analytic calculations for the models with deterministic and random forcing (white and coloured) are presented. The short-term behaviour is similar in all models, with only small quantitative differences, while the long-term behaviour differs qualitatively between the models. The fluctuation–dissip

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Karnauskas, Kristopher B., Raghu Murtugudde, and Antonio J. Busalacchi. "Observing the Galápagos–EUC Interaction: Insights and Challenges." Journal of Physical Oceanography 40, no. 12 (December 1, 2010): 2768–77. http://dx.doi.org/10.1175/2010jpo4461.1.

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Abstract Although sustained observations yield a description of the mean equatorial current system from the western Pacific to the eastern terminus of the Tropical Atmosphere Ocean (TAO) array, a comprehensive observational dataset suitable for describing the structure and pathways of the Equatorial Undercurrent (EUC) east of 95°W does not exist and therefore climate models are unconstrained in a region that plays a critical role in ocean–atmosphere coupling. Furthermore, ocean models suggest that the interaction between the EUC and the Galápagos Islands (∼92°W) has a striking effect on the ba

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Hanna, Edward. "The role of Antarctic sea ice in global climate change." Progress in Physical Geography: Earth and Environment 20, no. 4 (December 1996): 371–401. http://dx.doi.org/10.1177/030913339602000401.

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Taking a distinct interdisciplinary focus, a critical view is presented of the current state of research concerning Antarctic sea-ice / atmosphere / ocean interaction and its effect on climate on the interannual timescale, with particular regard to anthropogenic global warming. Sea-ice formation, morphology, thickness, extent, seasonality and distribution are introduced as vital factors in climatic feedbacks. Sea-ice / atmosphere interaction is next discussed, emphas izing its meteorological and topographical influences and the effects of and on polar cyclonic activity. This leads on to the ce

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Kravtsov, S. K., W. K. Dewar, M. Ghil, P. S. Berloff, and J. C. McWilliams. "North Atlantic climate variability in coupled models and data." Nonlinear Processes in Geophysics 15, no. 1 (January 18, 2008): 13–24. http://dx.doi.org/10.5194/npg-15-13-2008.

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Abstract. We show that the observed zonally averaged jet in the Northern Hemisphere atmosphere exhibits two spatial patterns with broadband variability in the decadal and inter-decadal range; these patterns are consistent with an important role of local, mid-latitude ocean–atmosphere coupling. A key aspect of this behaviour is the fundamentally nonlinear bi-stability of the atmospheric jet's latitudinal position, which enables relatively small sea-surface temperature anomalies associated with ocean processes to affect the large-scale atmospheric winds. The wind anomalies induce, in turn, compl

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Renault, Lionel, M. Jeroen Molemaker, Jonathan Gula, Sebastien Masson, and James C. McWilliams. "Control and Stabilization of the Gulf Stream by Oceanic Current Interaction with the Atmosphere." Journal of Physical Oceanography 46, no. 11 (November 2016): 3439–53. http://dx.doi.org/10.1175/jpo-d-16-0115.1.

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AbstractThe Gulf Stream (GS) is known to have a strong influence on climate, for example, by transporting heat from the tropics to higher latitudes. Although the GS transport intensity presents a clear interannual variability, satellite observations reveal its mean path is stable. Numerical models can simulate some characteristics of the mean GS path, but persistent biases keep the GS separation and postseparation unstable and therefore unrealistic. This study investigates how the integration of ocean surface currents into the ocean–atmosphere coupling interface of numerical models impacts the

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Bishop, Stuart P., R. Justin Small, Frank O. Bryan, and Robert A. Tomas. "Scale Dependence of Midlatitude Air–Sea Interaction." Journal of Climate 30, no. 20 (September 13, 2017): 8207–21. http://dx.doi.org/10.1175/jcli-d-17-0159.1.

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Abstract It has traditionally been thought that midlatitude sea surface temperature (SST) variability is predominantly driven by variations in air–sea surface heat fluxes (SHFs) associated with synoptic weather variability. Here it is shown that in regions marked by the highest climatological SST gradients and SHF loss to the atmosphere, the variability in SST and SHF at monthly and longer time scales is driven by internal ocean processes, termed here “oceanic weather.” This is shown within the context of an energy balance model of coupled air–sea interaction that includes both stochastic forc

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Lloyd, Ian D., and Gabriel A. Vecchi. "Submonthly Indian Ocean Cooling Events and Their Interaction with Large-Scale Conditions." Journal of Climate 23, no. 3 (February 1, 2010): 700–716. http://dx.doi.org/10.1175/2009jcli3067.1.

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Abstract The Indian Ocean exhibits strong variability on a number of time scales, including prominent intraseasonal variations in both the atmosphere and ocean. Of particular interest is the south tropical Indian Ocean thermocline ridge, a region located between 12° and 5°S, which exhibits prominent variability in sea surface temperature (SST) due to dominant winds that raise the thermocline and shoal the mixed layer. In this paper, submonthly (less than 30 day) cooling events in the thermocline ridge region are diagnosed with observations and models, and are related to large-scale conditions

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Robertson, Andrew W. "Influence of Ocean–Atmosphere Interaction on the Arctic Oscillation in Two General Circulation Models." Journal of Climate 14, no. 15 (August 2001): 3240–54. http://dx.doi.org/10.1175/1520-0442(2001)014<3240:iooaio>2.0.co;2.

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Jansen, Malte F., Dietmar Dommenget, and Noel Keenlyside. "Tropical Atmosphere–Ocean Interactions in a Conceptual Framework." Journal of Climate 22, no. 3 (February 1, 2009): 550–67. http://dx.doi.org/10.1175/2008jcli2243.1.

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Abstract Statistical analysis of observations (including atmospheric reanalysis and forced ocean model simulations) is used to address two questions: First, does an analogous mechanism to that of El Niño–Southern Oscillation (ENSO) exist in the equatorial Atlantic or Indian Ocean? Second, does the intrinsic variability in these basins matter for ENSO predictability? These questions are addressed by assessing the existence and strength of the Bjerknes and delayed negative feedbacks in each tropical basin, and by fitting conceptual recharge oscillator models, both with and without interactions a

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Liu, Bin, Huiqing Liu, Lian Xie, Changlong Guan, and Dongliang Zhao. "A Coupled Atmosphere–Wave–Ocean Modeling System: Simulation of the Intensity of an Idealized Tropical Cyclone." Monthly Weather Review 139, no. 1 (January 1, 2011): 132–52. http://dx.doi.org/10.1175/2010mwr3396.1.

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Abstract A coupled atmosphere–wave–ocean modeling system (CAWOMS) based on the integration of atmosphere–wave, atmosphere–ocean, and wave–current interaction processes is developed. The component models consist of the Weather Research and Forecasting (WRF) model, the Simulating Waves Nearshore (SWAN) model, and the Princeton Ocean Model (POM). The coupling between the model components is implemented by using the Model Coupling Toolkit. The CAWOMS takes into account various wave-related effects, including wave state and sea-spray-affected sea surface roughness, sea spray heat fluxes, and dissip

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Sen Gupta, Alexander, and Matthew H. England. "Coupled Ocean–Atmosphere Feedback in the Southern Annular Mode." Journal of Climate 20, no. 14 (July 15, 2007): 3677–92. http://dx.doi.org/10.1175/jcli4200.1.

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Abstract Previous studies have demonstrated that while the Southern Annular Mode (SAM) is an intrinsic feature of the atmosphere, it projects strongly onto the ocean and sea ice properties and circulation. This study investigates the extent of “back interaction” whereby these oceanic SAM anomalies feed back to the atmosphere. A comparison between atmosphere-only and full coupled climate models demonstrates that air–sea interactions in the coupled system act to increase the persistence of the SAM in the atmosphere. To identify the nature of feedback from the ocean to the atmosphere, ensemble ex

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Grist, Jeremy P., Simon A. Josey, Adrian L. New, Malcolm Roberts, Torben Koenigk, and Doroteaciro Iovino. "Increasing Atlantic Ocean Heat Transport in the Latest Generation Coupled Ocean-Atmosphere Models: The Role of Air-Sea Interaction." Journal of Geophysical Research: Oceans 123, no. 11 (November 2018): 8624–37. http://dx.doi.org/10.1029/2018jc014387.

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Dourado-Neto, D., D. A. Teruel, K. Reichardt, D. R. Nielsen, J. A. Frizzone, and O. O. S. Bacchi. "Principles of crop modeling and simulation: I. uses of mathematical models in agricultural science." Scientia Agricola 55, spe (1998): 46–50. http://dx.doi.org/10.1590/s0103-90161998000500008.

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Modeling techniques applied to agriculture can be useful to define research priorities and understanding the basic interactions of the soil-plant-atmosphere system. Using a model to estimate the importance and the effect of certain parameters, a researcher can notice which factors can be most useful. The modeler should define his objectives before beginning his work and construct a model that fulfills the proposed objectives.

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Wirth, Achim. "A Fluctuation–Dissipation Relation for the Ocean Subject to Turbulent Atmospheric Forcing." Journal of Physical Oceanography 48, no. 4 (April 2018): 831–43. http://dx.doi.org/10.1175/jpo-d-17-0097.1.

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AbstractThe fluctuation–dissipation relation for a turbulent fluid layer (ocean) subject to frictional forcing by a superposed lighter fluid layer (atmosphere) in local models of air–sea dynamics is established. The fluctuation–dissipation relation reflects the fact that air–sea interaction not only injects energy in the ocean but also dissipates it. Energy injection and dissipation must therefore be related. The competition between the two processes determines the oceanic energy budget in the idealized dynamics considered here. When applying the fluctuation–dissipation relation to a two-dimen

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