14 Works

THREE-DIMENSIONAL HINDCAST OF NITROGEN AND PHOSPHORUS BIOGEOCHEMICAL DYNAMICS IN LAKE ONEGO ECOSYSTEM, 1985-2015 PART I. LONG-TERM DYNAMICS AND SPATIAL DISTRIBUTION

A.V. Isaev, O.P. Savchuk & N.N. Filatov
Despite a wide-ranging research, there is almost no information regarding the major biogeochemical fluxes that could characterize the past and present state of the European Lake Onego ecosystem and be used for reliable prognostic estimates of its future. To enable such capacity, we adapted and implemented a three-dimensional coupled hydrodynamical biogeochemical model of the nutrient cycles in Lake Onego. The model was used to reconstruct three decades of Lake Onego ecosystem dynamics with daily resolution...

THREE-DIMENSIONAL HINDCAST OF NITROGEN AND PHOSPHORUS BIOGEOCHEMICAL DYNAMICS IN LAKE ONEGO ECOSYSTEM, 1985-2015 PART II. SEASONAL DYNAMICS AND SPATIAL FEATURES; INTEGRAL FLUXES

O. P. Savchuk, A.V. Isaev & N.N. Filatov
A three-dimensional coupled hydrodynamical biogeochemical model of the nitrogen and phosphorus cycles has been used for a long-term reanalysis of the Lake Onego ecosystem. The comparison between simulation and sparse irregular observations, presented in the first part of this paper, demonstrated plausibility of the reconstructed temporal and spatial features of biogeochemical dynamics at a long-term scale, while seasonal dynamics of variables and fluxes are presented here. As new regional phenological knowledge, the reanalysis quantifies that...

On the Transition of Temperature Regime of the White Sea Region to a New Phase State

I. V. Serykh, A. G. Kostianoy, S. A. Lebedev & E. A. Kostianaia
Changes in near surface air temperature (SAT) and vorticity of the wind speed field of the White Sea and the territory of the Murmansk and Arkhangelsk regions and the Republic of Karelia are investigated. We analyzed the monthly average NCEP/NCAR reanalysis data for the period 1950—2020. The average surface air temperature growth estimated using a linear trend was +0.24 °С/10 years. Against the background of this linear growth, significant interdecadal changes in surface air temperature...

Ocean and ice spin-up data for role of surface gravity waves in aquaplanet ocean climates

Joshua Studholme, Margarita Markina & Sergey Gulev
This data corresponds to the runs analysed in the manscript: Role of Surface Gravity Waves in Aquaplanet Ocean Climates (JAMES, 2021). In this work, we present a set of idealised numerical experiments that demonstrate the thermodynamic and dynamic implications of surface gravity waves for the oceanic climate of an aquaplanet. We study the impact of accounting for modulations by such waves upon air-sea momentum fluxes, Langmuir circulation and the Stokes-Coriolis force. This dataset is made...

Ocean and ice without waves data for role of surface gravity waves in aquaplanet ocean climates

Joshua Studholme, Margarita Markina & Sergey Gulev
This data corresponds to the runs analysed in the manscript: Role of Surface Gravity Waves in Aquaplanet Ocean Climates (JAMES, 2021). In this work, we present a set of idealised numerical experiments that demonstrate the thermodynamic and dynamic implications of surface gravity waves for the oceanic climate of an aquaplanet. We study the impact of accounting for modulations by such waves upon air-sea momentum fluxes, Langmuir circulation and the Stokes-Coriolis force. This dataset is made...

Different Approaches to Numerical Modeling of Sea Waves

D. V. Chalikov
The main approaches in direct modeling of surface waves based on complete equations of dynamics of the inviscid liquid with a free surface are briefly considered. Most of the models are intended for study of the applied and engineering problems. It is assumed that the main model is written in the curvilinear coordinate system where the height is counted off from wave surface. In the two-dimensional periodic formulation, when using a conformal system, the problem...

The Model of Radar Observation of the Surface Vibration Waves Generated by Earthquake Source (Ground Vibrator)

I. O. Karpov & S. V. Pereslegin
This research article is continuation case study based on a model of radar monitoring of vibration waves occurring on the sea surface near the source of a bottom earthquake. The vibration wave is generated parametrically, has near (hydrodynamic) and far (sound) components. The amplitude of the near (generating) wave depends on the bottom vibrator parameters and the depth of the bottom, the far wave propagates in the waveguide formed by the surface and the flat...

ANALYTICAL SOLUTION OF THE RAY EQUATIONS OF HAMILTON FOR ROSSBY WAVES ON STATIONARY SHEAR FLOWS

Vladimir G. Gnevyshev & Tatyana V. Belonenko
The asymptotic behavior of Rossby waves in the ocean interacting with a shear stationary flow is considered. It is shown that there is a qualitative difference between the problems for the zonal and non-zonal background flow. Whereas only one critical layer arises for a zonal flow, then several critical layers can exist for a non-zonal flow. It is established that the integrated ray equations of Hamilton are equivalent to the asymptotic behavior of the Cauchy...

Innate anti-predator behavior can promote infection in fish even in the absence of predators

Victor Mikheev, Anna Pasternak, Andrey Morozov & Jouni Taskinen
Natural enemies - predators and parasites - largely shape the dynamics of ecosystems. It is known that anti-predator and anti-parasite defense can be mutually conflicting, however consequences of this trade-off for the regulation of infection burden in animals are still poorly understood. We hypothesize that even in the absence of cues from predators, innate anti-predator behavior (“ghost of predation past”) interferes with defense against parasites and can enhance the infection risk. As a case study,...

Atmospheric and surface gravity wave data for role of surface gravity waves in aquaplanet ocean climates

Joshua Studholme, Margarita Markina & Sergey Gulev
This data corresponds to the runs analysed in the manscript: Role of Surface Gravity Waves in Aquaplanet Ocean Climates (JAMES, 2021). In this work, we present a set of idealised numerical experiments that demonstrate the thermodynamic and dynamic implications of surface gravity waves for the oceanic climate of an aquaplanet. We study the impact of accounting for modulations by such waves upon air-sea momentum fluxes, Langmuir circulation and the Stokes-Coriolis force. This dataset is made...

“The floods of the Neva, XVIII century”. Database

T. I. Malova
The problem of systematizing information about the historical floods of the Neva seems to be extremely urgent today. The construction of predictive models, the feasibility of building new hydraulic structures, planning of engineering, economic, environmental, social and cultural activities are impossible without a comprehensive analysis of information about floods. The official catalogs available to researchers, unfortunately, are not informative enough and are full of distortions. Working with a large array of numerical values characterizing the...

Coupled Modelling of Wind Waves and Wave Boundary Layer

K. V. Fokina & K. Yu. Bulgakov
The coupled wind-wave model is considered. The model includes two components: the 1-D wave boundary layer model and the 2-D wave model. The coupled model is used in two versions: in the presence and the absence of the wave produced momentum flux. A series of experiments was performed for different external parameters: wind speed at the upper boundary of the wave boundary layer and the inverse wave age. The vertical profiles of wind velocity, turbulent...

Ocean and ice with waves data for role of surface gravity waves in aquaplanet ocean climates

Joshua Studholme, Margarita Markina & Sergey Gulev
This data corresponds to the runs analysed in the manscript: Role of Surface Gravity Waves in Aquaplanet Ocean Climates (JAMES, 2021). In this work, we present a set of idealised numerical experiments that demonstrate the thermodynamic and dynamic implications of surface gravity waves for the oceanic climate of an aquaplanet. We study the impact of accounting for modulations by such waves upon air-sea momentum fluxes, Langmuir circulation and the Stokes-Coriolis force. This dataset is made...

Pontocaspian habitat polygon shapefiles from: Decline of unique Pontocaspian biodiversity in the Black Sea Basin: a review

Aleksandre Gogaladze, Mikhail Son, Matteo Lattuada, Vitaliy Anistratenko, Vitaly Syomin, Ana Bianca Pavel, Oana Popa, Luis Popa, Jan-Johan Ter Poorten, Jacobus Biesmeijer, Niels Raes, Thomas Wilke, Arthur Francis Sands, Teodora Trichkova, Zdravko Hubenov, Maxim Vinarski, Olga Anistratenko, Tatiana Alexenko & Frank Wesselingh
The unique aquatic Pontocaspian (PC) biota of the Black Sea Basin (BSB) is in decline. The lack of detailed knowledge on the status and trends of species, populations and communities hampers a thorough risk assessment and precludes effective conservation. This paper reviews PC biodiversity trends in the BSB ( Bulgaria, Romania, Moldova, Ukraine and Russia) using endemic molluscs as a model group. We aim to assess changes in PC habitats, community structure and species distribution...

Registration Year

  • 2022
    8
  • 2021
    5
  • 2019
    1

Resource Types

  • Journal Article
    8
  • Dataset
    6

Affiliations

  • Institute of Oceanology. PP Shirshov Russian Academy of Sciences
    14
  • Yale University
    4
  • University of Oxford
    4
  • Institute of Water Problems of the North Karelian Research Centre
    2
  • Stockholm University
    2
  • National Academy of Sciences of Ukraine
    1
  • Field Museum of Natural History
    1
  • Maikop State Technological University
    1
  • Moscow Witte University
    1
  • Bulgarian Academy of Sciences
    1