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Showing 1 to 17 of 17 for “"HYCOM"”.
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Evaluation of an eddy resolving HYCOM simulation in the South Atlantic Ocean
The South Atlantic Ocean acts as a key region of ocean teleconnections and water mass transformation, directly transporting waters from the Southern, Pacific and Indian Oceans towards the North Atlantic and feeding the upper branch of the Atlantic Meridional Overturning Circulation. To date, this …
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Assessing the impacts of assimilating satellite SST in addition to along-track SLA into a HYCOM of the Agulhas System
… of the Hybrid Coordinate Ocean Model (HYCOM). In the first experiment, we assimilate along-track satellite sea level anomaly (SLA) data only, and in the second experiment we assimilate both along-track sea level anomaly (SLA) as well as satellite sea surface temperature (SST) data. The …
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A study of Mesoscale Eddies, the Agulhas current and the evolution of its meanders using satellite observations and numerical modelling experiments
… in a regional Hybrid Coordinate Ocean Model (HYCOM), where we change the wind forcing, and using an eddy tracking algorithm assess the local effect of the changed wind stress on source region eddies and their interaction with the northern Agulhas Current. There is an overall reduction in eddy …
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Study On the Basin Scale Salt Exchange In the Indian Ocean Using Satellite Observations and Model Simulations
… high resolution HYbrid Coordinate Ocean Model (HYCOM) during 2003-06 showed that Ekman drift is more important than geostrophic component in the exchange of salt in the basins. Results of depth integrated transport using HYCOM output show southward salt transport in the surface waters and …
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Investigating the relationship between volume transport and sea surface height in the Agulhas Current System
… The 34-year regional-hindcast from HYCOM provided the means to test the sensitivity of the transport proxy to vertical changes in the current and the length scale of observations used to build a constant, linear relationship between transport and SSH slope. During the investigation …
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Quantifying the SST biases in data assimilative ocean simulations of the Benguela Upwelling System
… this study, the Hybrid Coordinate Ocean Model (HYCOM) is used in conjunction with the Ensemble Optimal Interpolation (EnOI) assimilation scheme to study the impact of assimilating sea surface temperature (SST) and along-track sea level anomalies (SLA) observations on predicted upwelling dynamics …
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Sea level variability and coastal trapped waves around southern Africa
… from the Hybrid Coordinate Ocean Model (HYCOM) at a grid point closest to each tide gauge station under consideration. The observed records showed sea level variability dominated by the short time variability with a period shorter than one month. This short time variability varies from …
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Uncertainty Quantification in Earth System Models Using Polynomial Chaos Expansions
… namely the HYbrid Coordinate Ocean Model (HYCOM, an ocean general circulation model (OGCM)) for the study of ocean circulation in the Gulf of Mexico (GoM); the Unified Wave INterface - Coupled Model (UWIN-CM, a dynamically coupled atmosphere-wave-ocean system) for Hurricane Earl (2010) …
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Influência de ventos, marés e mesoescala sobre os fluxos superficiais entre o talude e a plataforma continental SSE do Brasil
… of numerical simulations in high resolution with HYCOM model. Three experiments were carried out: i) with tides, ii) without tides and iii) with winds acting directly on the advection of the particles. The surface launches were made at different sites on the continental margin. The flow of the …
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The impact of wave-modified wind stress in an ocean circulation model
… is introduced in the ocean circulation model HYCOM. The physical process driving this parametrization is the growing and dissipation of the surface wave field. Two numerical experiments are conducted for the South Atlantic: one with the new wave effect included and a control run (without any …
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A relevância da variabilidade oceânica e atmosférica para o transporte de partículas ao sudeste do Brasil
… e correntes em superfície gerados pelo modelo HYCOM - Hybrid Coordinate Ocean Model, integrado para a região oeste do Atlântico Sul pelo Laboratório de Oceanografia Física - LOF/COPPE da UFRJ no escopo do projeto REMO, vimos que existem anos em que: 1, a ocorrência de eventos de frente fria …
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Evaluating global ocean reanalysis systems for the greater Agulhas Current System
… reanalysis products, namely MyOcean (GLORYS2V1), HYCOM (U.S Naval Research Laboratory) and BlueLINK (OFAM3). These reanalysis products are validated and investigated over the greater Agulhas Current System, which is a crucial system in Southern African regional ocean. The salient oceanographic …
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The impact of assimilating along-track SLA data on simulated Eddy characteristics in the Agulhas system
… of a Hybrid Coordinate Ocean Model (HYCOM) configuration are analysed; one free run (hereafter 'Free') and one with along-track SLA data from satellite altimetry assimilated (hereafter 'Assim.') via an Ensemble Optimal Interpolation (EnOI) data assimilation scheme. The results of …
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Machine Learning for Improvement of Ocean Data Resolution for Weather Forecasting and Climatological Research
… Satellite ocean Data (e.g. HYCOM, MODIS-Aqua, G-COM) and generated high resolution data with a RMSE of 0.58◦C over the Atlantic Ocean.The second part of the work a novel GNN algorithm was implemented on the Gulf of Mexico and showed it can successfully capture the complex …
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The Role of Kelvin Waves on the Circulation and Salt Transport Variability in the Coastal Bay of Bengal
… and the HYbrid Coordinate Ocean Model (HYCOM) simulations for the 2002-2006 period. Wavelet analyses of each time series of SSH data at five select locations revealed a dominant annual period in the equatorial Indian Ocean, progressing to a semiannual period off the Sumatra coast, and …
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Mechanisms of Subantarctic Mode Water re-emergence in a hybrid-coordinate global GCM
… Coordinate Ocean general circulation Model (HYCOM) is configured to simulate the global ocean circulation for timescales of up to centuries. After development and validation of the model, a control run of 120 years is undertaken in order to reach a near-equilibrium. A tracer is then injected …
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Adaptive Stochastic Reduced-Order Modeling for Autonomous Ocean Platforms
… using the Navy’s Hybrid Coordinate Ocean Model (HYCOM) forecasts in the North Atlantic region. We then apply the adaptive ROM onboard forecasting algorithm to interdisciplinary applications, showcasing adaptive reduced-order forecasts for onboard underwater acoustics computations and forecasts, …