Academic literature on the topic 'Thermohaline variables'

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Journal articles on the topic "Thermohaline variables"

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Döös, Kristofer, Johan Nilsson, Jonas Nycander, Laurent Brodeau, and Maxime Ballarotta. "The World Ocean Thermohaline Circulation*." Journal of Physical Oceanography 42, no. 9 (2012): 1445–60. http://dx.doi.org/10.1175/jpo-d-11-0163.1.

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Abstract A new global streamfunction is presented and denoted the thermohaline streamfunction. This is defined as the volume transport in terms of temperature and salinity (hence no spatial variables). The streamfunction is used to analyze and quantify the entire World Ocean conversion rate between cold/warm and fresh/saline waters. It captures two main cells of the global thermohaline circulation, one corresponding to the conveyor belt and one corresponding to the shallow tropical circulation. The definition of a thermohaline streamfunction also enables a new method of estimating the turnover
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Taboada, J. J., and M. N. Lorenzo. "Effects of the synoptic scale variability on the thermohaline circulation." Nonlinear Processes in Geophysics 12, no. 4 (2005): 435–39. http://dx.doi.org/10.5194/npg-12-435-2005.

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Abstract. In this paper the effect of the synoptic scale variability is analyzed using a simple atmosphere-ocean coupled model. This high frequency variability has been taken into account in the model adding white gaussian noise in variables related to zonal and meridional temperature differences. Results show that synoptic scale frequency variability on longitudinal heating contrast between land and sea can produce a collapse of thermohaline circulation when a threshold of noise is overcome. This result is significant because if synoptic scale variability in the next century increases due to
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Lucarini, Valerio, and Peter H. Stone. "Thermohaline Circulation Stability: A Box Model Study. Part I: Uncoupled Model." Journal of Climate 18, no. 4 (2005): 501–13. http://dx.doi.org/10.1175/jcli-3278.1.

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Abstract A thorough analysis of the stability of the uncoupled Rooth interhemispheric three-box model of thermohaline circulation (THC) is presented. The model consists of a northern high-latitude box, a tropical box, and a southern high-latitude box, which correspond to the northern, tropical, and southern Atlantic Ocean, respectively. Restoring boundary conditions are adopted for the temperature variables, and flux boundary conditions are adopted for the salinity variables. This paper examines how the strength of THC changes when the system undergoes forcings that are analogous to those of g
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Kaabar, Mohammed K. A., Francisco Martínez, Inmaculada Martínez, Zailan Siri, and Silvestre Paredes. "Novel Investigation of Multivariable Conformable Calculus for Modeling Scientific Phenomena." Journal of Mathematics 2021 (November 23, 2021): 1–12. http://dx.doi.org/10.1155/2021/3670176.

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New investigation on the conformable version (CoV) of multivariable calculus is proposed. The conformable derivative (CoD) of a real-valued function (RVF) of several variables (SVs) and all related properties are investigated. An extension to vector-valued functions (VVFs) of several real variables (SRVs) is studied in this work. The CoV of chain rule (CR) for functions of SVs is also introduced. At the end, the CoV of implicit function theorem (IFThm) for SVs is established. All results in this work can be potentially applied in studying various modeling scenarios in physical oceanography suc
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Obata, Atsushi. "Climate–Carbon Cycle Model Response to Freshwater Discharge into the North Atlantic." Journal of Climate 20, no. 24 (2007): 5962–76. http://dx.doi.org/10.1175/2007jcli1808.1.

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Abstract The response of a coupled climate–carbon cycle model to discharge of freshwater into the North Atlantic is investigated with regard to cold reversals caused by meltwater from northern continental ice sheets such as the Younger Dryas during the last deglaciation. The extreme case in which the North Atlantic thermohaline circulation ceases in several decades is discussed. In the preindustrial case, northern severe cooling is reproduced by the collapse of the Atlantic northward heat transport, and land carbon decreases because of a decrease in net primary production (NPP) by the cooling
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Meunier, Thomas, Paula Pérez-Brunius, and Amy Bower. "Reconstructing the Three-Dimensional Structure of Loop Current Rings from Satellite Altimetry and In Situ Data Using the Gravest Empirical Modes Method." Remote Sensing 14, no. 17 (2022): 4174. http://dx.doi.org/10.3390/rs14174174.

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The three-dimensional structure of Gulf of Mexico’s warm-core rings, detaching from the Loop Current, is investigated using satellite altimetry and a large set of ARGO float profiles. Reconstruction of the Loop Current rings (LCRs) vertical structure from sea surface height observations is made possible by the use of the gravest empirical modes method (GEM). The GEMs are transfer functions that associate a value of temperature and salinity for each variable pair {dynamic height; pressure}, and are computed by estimating an empirical relationship between dynamic height and the vertical thermoha
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Ospina-Alvarez, N., and al. et. "Oceanographical patterns during a summer upwelling-downwelling event in the Northern Galician Rias." Continental Shelf Research 30 (January 1, 2010): 1362–72. https://doi.org/10.1016/j.csr.2010.04.018.

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Ospina-Alvarez N, Prego R, Alvarez I, deCastro M, Alvarez-Ossorio MT, Pazos Y, Campos M, Bernardez P, Garcia-Soto C, Gomez- Gesteira M, Varela M (2010) Oceanographical patterns during a summer upwelling-downwelling event in the Northern Galician Rias. Comparison with the whole ria system (NW of Iberian Peninsula). Continental Shelf Research 30:1362–1372 
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de Pablo, Hilda, João Sobrinho, Mariangel Garcia, Francisco Campuzano, Manuela Juliano, and Ramiro Neves. "Validation of the 3D-MOHID Hydrodynamic Model for the Tagus Coastal Area." Water 11, no. 8 (2019): 1713. http://dx.doi.org/10.3390/w11081713.

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The hydrodynamics of the TagusROFI (Regions of Freshwater Influence) is affected by the coastal upwelling, the estuarine tidal flow, the thermohaline circulation that is modulated by the Tagus freshwater discharge, and by its complex bathymetry. The use of numerical models is the best way to explain the processes that characterize this region. These models are also crucial to answer important scientific and management questions. Nevertheless, the robustness of the products derived from models depend on their accuracy and therefore models must be validated to determine the uncertainty associate
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Glowacki, Oskar, and Grant B. Deane. "Quantifying iceberg calving fluxes with underwater noise." Cryosphere 14, no. 3 (2020): 1025–42. http://dx.doi.org/10.5194/tc-14-1025-2020.

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Abstract. Accurate estimates of calving fluxes are essential in understanding small-scale glacier dynamics and quantifying the contribution of marine-terminating glaciers to both eustatic sea-level rise (SLR) and the freshwater budget of polar regions. Here we investigate the application of acoustical oceanography to measure calving flux using the underwater sounds of iceberg–water impact. A combination of time-lapse photography and passive acoustics is used to determine the relationship between the mass and impact noise of 169 icebergs generated by subaerial calving events from Hansbreen, Sva
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Vannitsem, Stéphane, and Pierre Ekelmans. "Causal dependences between the coupled ocean–atmosphere dynamics over the tropical Pacific, the North Pacific and the North Atlantic." Earth System Dynamics 9, no. 3 (2018): 1063–83. http://dx.doi.org/10.5194/esd-9-1063-2018.

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Abstract. The causal dependences (in a dynamical sense) between the dynamics of three different coupled ocean–atmosphere basins, the North Atlantic, the North Pacific and the tropical Pacific region (Nino3.4), have been explored using data from three reanalysis datasets, namely ORA-20C, ORAS4 and ERA-20C. The approach is based on convergent cross mapping (CCM) developed by Sugihara et al. (2012) that allows for evaluating the dependences between variables beyond the classical teleconnection patterns based on correlations. The use of CCM on these data mostly reveals that (i) the tropical Pacifi
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Dissertations / Theses on the topic "Thermohaline variables"

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Walther, Marc. "Variable-Density Flow Processes in Porous Media On Small, Medium and Regional Scales." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-153365.

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Nowadays society strongly depends on its available resources and the long term stability of the surrounding ecosystem. Numerical modelling has become a general standard for evaluating past, current or future system states for a large number of applications supporting decision makers in proper management. In order to ensure the correct representation of the investigated processes and results of a simulation, verification examples (benchmarks), that are based on observation data or analytical solutions, are utilized to evaluate the numerical modelling tool. In many parts of the world, groundwa
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Walther, Marc. "Variable-Density Flow Processes in Porous Media On Small, Medium and Regional Scales." Doctoral thesis, 2013. https://tud.qucosa.de/id/qucosa%3A28302.

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Nowadays society strongly depends on its available resources and the long term stability of the surrounding ecosystem. Numerical modelling has become a general standard for evaluating past, current or future system states for a large number of applications supporting decision makers in proper management. In order to ensure the correct representation of the investigated processes and results of a simulation, verification examples (benchmarks), that are based on observation data or analytical solutions, are utilized to evaluate the numerical modelling tool. In many parts of the world, groundwa
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Book chapters on the topic "Thermohaline variables"

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Dolman, Han. "Physics and Dynamics of the Oceans." In Biogeochemical Cycles and Climate. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198779308.003.0007.

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This chapter focuses on the physics and dynamics of the ocean. It describes the variability of salinity and surface temperature, as well as the vertical temperature structure of the ocean, with the thermocline separating the variable top layer from the deeper ocean. It then describes the key forces in the ocean, as well as the geostrophic balance due to the Coriolis force and density differences. It derives the equations for the change of velocity with depth, the Ekman flow. Barotropic flow and baroclinic flow are elucidated and the general circulation of the ocean, with gyres and the effect o
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Reports on the topic "Thermohaline variables"

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Rémy, Elisabeth, Romain Escudier, and Alexandre Mignot. Access impact of observations. EuroSea, 2023. http://dx.doi.org/10.3289/eurosea_d4.8.

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The accuracy of the Copernicus Marine Environment and Monitoring Service (CMEMS) ocean analysis and forecasts highly depend on the availability and quality of observations to be assimilated. In situ observations are complementary to satellite observations that are restricted to the ocean surface. Higher resolution model forecasts are required by users of the CMEMS global and regional ocean analysis and forecasts. To support this with an efficient observational constrain of the model forecast via data assimilation, an increase observation coverage is needed, associated with an improved usage of
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