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Biological oceanography

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Antarctic Mode Water, K. Speer, J.-B. Sallee, V. Pellichero Jan 2018

Antarctic Mode Water, K. Speer, J.-B. Sallee, V. Pellichero

Journal of Marine Research

An estimate of Southern Ocean volume in temperature-salinity (T-S) classes is made with a focus on cold water masses south of the Polar Front, at depths shallower than 2,000 m. The volumetric diagram for waters below 5° C shows a deficit at temperatures near 0° C and 34.2 psu, surrounded by a ring of larger volumes, related to water mass formation near the Polar Front and near the continental margins as well as mixing effects. The cold, fresh extreme of the Antarctic Intermediate Water T-S relation shows a volumetric maximum, apparently distinct from the interior T-S relationship. We …


Multi-Decadal Trends And Variability In Temperature And Salinity In The Mid-Atlantic Bight, Georges Bank, And Gulf Of Maine, Elizabeth J. Wallace, Lev B. Looney, Donglai Gong Jan 2018

Multi-Decadal Trends And Variability In Temperature And Salinity In The Mid-Atlantic Bight, Georges Bank, And Gulf Of Maine, Elizabeth J. Wallace, Lev B. Looney, Donglai Gong

Journal of Marine Research

Increasing attention is being placed on the regional impact of climate change. This study focuses on the decadal scale variabilities of temperature and salinity in the Mid-Atlantic Bight (MAB), Georges Bank (GB), and Gulf of Maine (GOM) from 1977 to 2016 using hydrographic survey data from the National Oceanic and Atmospheric Administration (NOAA) Northeast Fisheries Science Center. The MAB (as defined by the shelf regions from Cape Hatteras to Cape Cod) experienced warming rates of 0.57 °C per decade during the Winter/Spring season (Jan–Apr) and 0.47 °C per decade during the Fall/Winter season (Sep–Dec). The GOM and GB, on the …


Chemical And Phycological Structure Of Surface Microlayer And Subsurface Water In A Southern Baltic Sea Estuary, Józef Piotr Antonowicz, Anna Kozak Jan 2018

Chemical And Phycological Structure Of Surface Microlayer And Subsurface Water In A Southern Baltic Sea Estuary, Józef Piotr Antonowicz, Anna Kozak

Journal of Marine Research

The surface microlayer of water (SML) is a unique ecotone found on all water bodies. It is an interphase for the exchange of matter between the hydrosphere and the atmosphere. This ecotone is capable of accumulating chemicals and microorganisms in amounts as high as 100-fold greater than those observed in the pelagic zone. Here we report on the accumulation of chemicals and phytoneuston in the SML of the estuarial Łebsko Lake located at the southern coast of the Baltic Sea in the unpolluted region of the World Biosphere Reserve: the Słowínski National Park in Poland. The physicochemical parameters and phytoplankton …


Lagrangian Dispersion Characteristics In The Western Mediterranean, Maher Bouzaiene, Milena Menna, Pierre-Marie Poulain, Dalila Elhmaidi Jan 2018

Lagrangian Dispersion Characteristics In The Western Mediterranean, Maher Bouzaiene, Milena Menna, Pierre-Marie Poulain, Dalila Elhmaidi

Journal of Marine Research

Dispersion characteristics in the Western Mediterranean are analyzed using data from Coastal Ocean Dynamics Experiment (CODE) and Surface Velocity Program (SVP) surface drifters deployed in the period 1986–2017. Results are presented in terms of absolute dispersion A2 (mean-squared displacement of drifter individuals) and of relative dispersion (D2; mean square separation distance of drifter pairs). Moreover, the dispersion characteristics are estimated for different initial separation distances (D0) between particles: smaller, larger, or comparable with the internal Rossby radius of deformation. Results show the presence of a quasiballistic regime for absolute dispersion at small time scales and …


Why Is The Ocean Surface Slightly Warmer Than The Atmosphere?, Lakshika Girihagama, Doron Nof Jan 2018

Why Is The Ocean Surface Slightly Warmer Than The Atmosphere?, Lakshika Girihagama, Doron Nof

Journal of Marine Research

How much warmer is the ocean surface than the atmosphere directly above it? The present study offers a means to quantify this temperature difference using a conceptual nonlinear one-dimensional global energy balance coupled ocean–atmosphere model ("Aqua Planet"). The significance of our idealized model, which is of intermediate complexity, is its ability to obtain an analytical solution for the global average temperatures. Our analytical model results show that, for the present climate, predicted global mean ocean temperature is 291.1 K whereas surface atmospheric temperature above the ocean surface is 287.4 K. Thus, the modeled surface ocean is 3.7 K …


High-Frequency Variability In The North Icelandic Jet, B. E. Harden, R. S. Pickart Jan 2018

High-Frequency Variability In The North Icelandic Jet, B. E. Harden, R. S. Pickart

Journal of Marine Research

We describe the high-frequency variability in the North Icelandic Jet (NIJ) on the Iceland Slope using data from the densely instrumented Kögur mooring array deployed upstream of the Denmark Strait sill from September 2011 to July 2012. Significant sub-8-day variability is ubiquitous in all moorings from the Iceland slope with a dominant period of 3.6 days. We attribute this variability to topographic Rossby waves on the Iceland slope with a wavelength of 62 ± 3 km and a phase velocity of 17.3 ± 0.8 km/day–1 directed downslope (–9° relative to true-north). We test the theoretical dispersion relation for these …


Assessing The Primary Drivers Of The Abundance And Diversity Of Elasmobranchs On Caribbean Coral Reefs, Gina Marie Clementi Aug 2017

Assessing The Primary Drivers Of The Abundance And Diversity Of Elasmobranchs On Caribbean Coral Reefs, Gina Marie Clementi

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In response to the decline of reef-associated sharks in the greater-Caribbean due to overexploitation, several nations have enacted fisheries legislation to minimize and/or prohibit shark fishing. Despite the establishment of shark sanctuaries (e.g. The Bahamas), most nations have minimal shark fishery management outside of well-established marine reserves (e.g. Belize). I hypothesized that the diversity and abundance of exploited elasmobranchs (Caribbean reef shark Carcharhinus perezi, blacknose shark Carcharhinus acronotus, Atlantic sharpnose shark Rhizoprionodon terraenovae, Caribbean sharpnose shark Rhizoprionodon porosus, tiger shark Galeocerdo cuvier, great hammerhead shark Sphyrna mokarran, lemon shark Negaprion brevirostris) would be primarily driven by direct fishing pressure while …


Migration Diversity, Spawning Behavior, And Temperature Selection Of Winter Flounder, Catherine Ziegler Aug 2017

Migration Diversity, Spawning Behavior, And Temperature Selection Of Winter Flounder, Catherine Ziegler

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Winter Flounder have declined to less than 11% of their historical abundance in offshore areas and have experienced severe declines and inbreeding in coastal subpopulations. Overfishing, unfavorable environmental conditions and predation have been suggested as drivers of this species’ decline. Stocks that migrate inshore to spawn exhibit metapopulation structure, migration diversity and localized responses to large-scale environmental drivers. Understanding metapopulation structure and disparate migratory behavior is vital to understanding the species’ dynamics in the region. We used acoustic telemetry to evaluate migratory types and natal homing in adult Winter Flounder (n = 76) in Mattituck Creek, NY. Telemetry results showed …


Macrobenthos Community Succession In The Northern Gulf Of Mexico Hypoxic Regions: Testing The Pearson-Rosenberg Model, Shivakumar K. Shivarudrappa, Kevin B. Briggs Jan 2017

Macrobenthos Community Succession In The Northern Gulf Of Mexico Hypoxic Regions: Testing The Pearson-Rosenberg Model, Shivakumar K. Shivarudrappa, Kevin B. Briggs

Journal of Marine Research

The Pearson and Rosenberg (P-R) conceptual model of macrobenthic succession was used to assess the impact of hypoxia (dissolved oxygen concentration ≤2 mg L–1) on the macrobenthic community on the continental shelf of the northern Gulf of Mexico. The stress-response relationship between bottom-water oxygen concentration and the macrobenthic community was used to determine the ecological condition of the benthic habitat. In lieu of testing the effect of decreasing influence of organic enrichment on the macrobenthic community as a function of distance from the source of organic pollution, we tested the effect of bottom-water dissolved oxygen concentration as a …


The Sea: The Science Of Ocean Prediction, Nadia Pinardi, Pierre F. J. Lermusiaux, Kenneth H. Brink, Ruth H. Preller Jan 2017

The Sea: The Science Of Ocean Prediction, Nadia Pinardi, Pierre F. J. Lermusiaux, Kenneth H. Brink, Ruth H. Preller

Journal of Marine Research

At the beginning of the 20th century Vilhelm Bjerknes defined the “ultimate problem ofmeteorology and hydrography” as the discovery of “the laws according to which an atmospheric or hydrospheric state develops out of the preceding one” and the “precalculation of future states” from gridded analyzed observations—that is, forecasting. The development of the electronic computer and the vision of several meteorologists allowed the transformation of meteorology into a sophisticated scientific discipline based on physics and mathematics. The first successful meteorological forecast was carried out in the 1950s. Meteorological forecasting became an operational activity at the end of the 1960s. The contributions …


Some Considerations About Coastal Ocean Observing Systems, K. H. Brink, Anthony R. Kirincich Jan 2017

Some Considerations About Coastal Ocean Observing Systems, K. H. Brink, Anthony R. Kirincich

Journal of Marine Research

Coastal ocean observing capabilities are evolving rapidly, both in terms of sensors and in terms of the volume of information available. We discuss the aspects of the coastal ocean that make it a unique environment, both in terms of physical processes and measurement techniques. Although many global-level systems are relevant to the coastal ocean, we concentrate on treating systems that are unique to the continental shelf environment. Further, we briefly discuss examples of measurement systems that would be useful for developing and driving ocean prediction systems.


Langmuir Supercells On The Middle Shelf Of The South Atlantic Bight: 1. Cell Structure, D. K. Savidge, A. E. Gargett Jan 2017

Langmuir Supercells On The Middle Shelf Of The South Atlantic Bight: 1. Cell Structure, D. K. Savidge, A. E. Gargett

Journal of Marine Research

Langmuir circulation cells extending through entire water columns exert a profound influence on sediment transport on shallow shelves, hence their designation as "Langmuir Supercells" (LSs) upon discovery in 2004 in water of 15 m depth at the Long-Term Ecosystem Observatory (LEO) off New Jersey (United States). Until now, similar high-frequency, full water column measurements of turbulent velocities and density fields have not been reported from significantly deeper continental shelf environments. Such deeper measurements are needed to determine whether LSs exist to influence sediment transport outside the inner shelf. In this article, that deficiency is addressed, using measurements from a midshelf …


A New Era For The Sea, K. H. Brink, James J. Mccarthy Jan 2017

A New Era For The Sea, K. H. Brink, James J. Mccarthy

Journal of Marine Research

Now in its 80th year of publication, Journal of Marine Research has always striven to serve the oceanographic community by publishing papers vital to the marine research in the long and rich tradition of the Sears Foundation for Marine Research. As such, with this special issue we bring into the fold The Sea, the long-standing highly respected series that provides a continuing, comprehensive, and timely synthesis of the state of knowledge of ocean science...


Rainfall Effect On Sediment And Nutrient Fluxes In A Small Mangrove River, Okinawa, Japan, Kazumi Terada, Yukio Koibuchi, Masahiko Isobe Jan 2017

Rainfall Effect On Sediment And Nutrient Fluxes In A Small Mangrove River, Okinawa, Japan, Kazumi Terada, Yukio Koibuchi, Masahiko Isobe

Journal of Marine Research

To understand the effect of rainfall on sediment and nutrient fluxes in a mangrove river ecosystem, field observations were conducted in the Fukido River, Okinawa, Japan. Water currents and water quality parameters (salinity and turbidity) were measured at the river mouth and upstream, and surface water samples were analyzed for nutrient concentrations (NO3-N, NH4-N, PO4-P, SiO2-Si, suspended solids [SS], total nitrogen [TN], and total phosphorus [TP]). Observations were conducted on both clear and rainy days, which revealed the effect of weather. SS flux at the river mouth (outflux to sea) and upstream …


Recent Advances In Nearshore Wave, Circulation, And Sediment Transport Modeling, James T. Kirby Jan 2017

Recent Advances In Nearshore Wave, Circulation, And Sediment Transport Modeling, James T. Kirby

Journal of Marine Research

Significant advances in the modeling of nearshore processes have occurred over recent decades as a result of developments in both computational approaches and theoretical understanding. This review examines the present state of progress primarily from a hydrodynamics standpoint, followed by a brief discussion of applications to sediment transport and morphological evolution. Wave-averaged formulations of the wave-current interaction problem and resulting models for wave-induced currents are reviewed in order to compare and contrast radiation stress and vortex force approaches. Waveresolving approaches are then discussed, with an emphasis on the recent rapid development of 3D nonhydrostatic models and their application to a …


Forecast Errors, Goodness, And Verification In Ocean Forecasting, Gary B. Brassington Jan 2017

Forecast Errors, Goodness, And Verification In Ocean Forecasting, Gary B. Brassington

Journal of Marine Research

Verification is an essential part of the forecast process that provides guidance on the statistical behavior of the system and a framework by which a forecast can be assessed for its "goodness." Much of the framework applicable to ocean forecasting has been developed within the atmospheric community. A review of the available material is given with some commentary on its relevance in the context of ocean forecasting. A statistical theory is presented for errors in an ocean forecast system (both deterministic and ensemble) and for a number of verification metrics. Theoretical results are demonstrated with empirical models and results from …


The Effect Of A Strong Warm Winter On Subtropical Zooplankton Biomass And Metabolism, Inma Herrera, José Lopéz-Cancio, Lidia Yebra, Santiago Hernández-Léon Jan 2017

The Effect Of A Strong Warm Winter On Subtropical Zooplankton Biomass And Metabolism, Inma Herrera, José Lopéz-Cancio, Lidia Yebra, Santiago Hernández-Léon

Journal of Marine Research

Winter 2010 was the warmest of the last 30 years in the subtropical oceanic waters north of the Canary Islands. Sea surface temperature was always above 19°C, promoting a strong stratification and preventing the expected late winter bloom. The knowledge of how planktonic organisms respond to such a warm scenario is of paramount importance to predict the effect of future ocean changes. In this study, zooplankton biomass and gut fluorescence (GF), electron transport system (ETS) activity, and aminoacyl-tRNA synthetases (AARS) activity were measured as proxies of metabolism in the oceanic waters north of the Canary Islands during the winter–spring period …


Ocean Dynamics, Gregg Jacobs, Baylor Fox-Kemper Jan 2017

Ocean Dynamics, Gregg Jacobs, Baylor Fox-Kemper

Journal of Marine Research

Operational prediction systems must balance conflicting considerations involved in representing the widest possible range of ocean physics, limited by computational constraints. Choices must be made in prediction systems that exclude particular dynamics to enable feasible solutions within defined resources. We examine some of the basic ocean dynamics that ocean prediction systems intend to represent. The two most basic simplifications are the Boussinesq and hydrostatic. Even with these limitations, ocean models represent a vast range of physical processes, and this enables application to many problems. We examine a succinct range of basic dynamics and consider how these affect operational ocean prediction …


Observations Of The East Madagascar Current System: Dynamics And Volume Transports, Aksel Voldsund, Borja Aguiar-González, Tor Gammelsrød, Jens-Otto Krakstad, Jenny Ullgren Jan 2017

Observations Of The East Madagascar Current System: Dynamics And Volume Transports, Aksel Voldsund, Borja Aguiar-González, Tor Gammelsrød, Jens-Otto Krakstad, Jenny Ullgren

Journal of Marine Research

The South Equatorial Current (SEC) in the Indian Ocean bifurcates when it reaches Madagascar leading, respectively, to the North East Madagascar Current (NEMC), which contours the island flowing northwestward, and to the South East Madagascar Current (SEMC), which flows southwestward. Both branches eventually contribute to the greater Agulhas Current system and thus play a part in the global ocean circulation. In addition, these currents have important effects on the local conditions for marine life. In this study, the NEMC and the SEMC are investigated based on a comprehensive, multidisciplinary survey of the east coast of Madagascar in 2008. Results from …


Reconstructing The Recent Past Ocean Variability: Status And Perspective, Simona Masina, Andrea Storto Jan 2017

Reconstructing The Recent Past Ocean Variability: Status And Perspective, Simona Masina, Andrea Storto

Journal of Marine Research

In the last two decades, climate research has benefited from the continuous development of analysis systems dedicated to operational monitoring and forecasting, which opened up the possibility of exploiting the state of the art modeling and data assimilation tools to reconstruct and study the ocean during the past decades. This activity became feasible also thanks to the increasing availability of long time series of high-quality in situ and remotely-sensed observations. Retrospective analyses (or simply reanalyses or ocean syntheses), indeed combine quality controlled reprocessed ocean observations with a state-of-the-art ocean general circulation model (OGCM) using data assimilation methods to estimate the …


The North Icelandic Jet And Its Relationship To The North Icelandic Irminger Current, Robert S. Pickart, Michael A. Spall, Daniel J. Torres, Kjetil Våge, Hedinn Valdimarsson, C. Nobre, G. W. K. Moore, Steingrimur Jonsson, Dana Mastropole Jan 2017

The North Icelandic Jet And Its Relationship To The North Icelandic Irminger Current, Robert S. Pickart, Michael A. Spall, Daniel J. Torres, Kjetil Våge, Hedinn Valdimarsson, C. Nobre, G. W. K. Moore, Steingrimur Jonsson, Dana Mastropole

Journal of Marine Research

Shipboard hydrographic and velocity sections are used to quantify aspects of the North Icelandic Jet (NIJ), which transports dense overflow water to Denmark Strait, and the North Icelandic Irminger Current (NIIC), which imports Atlantic water to the Iceland Sea. The mean transports of the two currents are comparable, in line with previous notions that there is a local overturning cell in the Iceland Sea that transforms the Atlantic water to dense overflow water. As the NIJ and NIIC flow along the north side of Iceland, they appear to share a common front when the bottom topography steers them close together, …


A Future For Intelligent Autonomous Ocean Observing Systems, P. F.J. Lermusiaux, D. N. Subramani, J. Lin, C. S. Kulkarni, A. Gupta, A. Dutt, T. Lolla, P. J. Haley Jr., W. H. Ali, C. Mirabito, S. Jana Jan 2017

A Future For Intelligent Autonomous Ocean Observing Systems, P. F.J. Lermusiaux, D. N. Subramani, J. Lin, C. S. Kulkarni, A. Gupta, A. Dutt, T. Lolla, P. J. Haley Jr., W. H. Ali, C. Mirabito, S. Jana

Journal of Marine Research

Ocean scientists have dreamed of and recently started to realize an ocean observing revolution with autonomous observing platforms and sensors. Critical questions to be answered by such autonomous systems are where, when, and what to sample for optimal information, and how to optimally reach the sampling locations. Definitions, concepts, and progress towards answering these questions using quantitative predictions and fundamental principles are presented. Results in reachability and path planning, adaptive sampling, machine learning, and teaming machines with scientists are overviewed. The integrated use of differential equations and theory from varied disciplines is emphasized. The results provide an inference engine and …


Oil Spill Forecasting (Prediction), George Zodiatis, Robin Lardner, Tiago M. Alves, Yiannis Krestenitis, Leonidas Perivoliotis, Sarantis Sofianos, Katerina Spanoudaki Jan 2017

Oil Spill Forecasting (Prediction), George Zodiatis, Robin Lardner, Tiago M. Alves, Yiannis Krestenitis, Leonidas Perivoliotis, Sarantis Sofianos, Katerina Spanoudaki

Journal of Marine Research

Oil spills in the ocean are a matter of concern due to the damaging effect they can have on coastal and offshore resources. This work presents a review of present-day modeling techniques used in the mitigation of oil spills by booms, skimmers, chemical dispersants, and other equipment and the importance of the controlling parameters of these techniques. Three basic questions need to be addressed by oil spill models: (1) where the spill will move, (2) when will the spill get to the modeled endpoints, and (3) what will be its state when it arrives. The first two questions are relatively …


Coupled Ocean-Atmosphere Forecasting At Short And Medium Time Scales, Julie Pullen, Richard Allard, Hyodae Seo, Arthur J. Miller, Shuyi Chen, Luciano Ponzi Pezzi, Travis Smith, Philip Chu, José Alves, Rui Caldeira Jan 2017

Coupled Ocean-Atmosphere Forecasting At Short And Medium Time Scales, Julie Pullen, Richard Allard, Hyodae Seo, Arthur J. Miller, Shuyi Chen, Luciano Ponzi Pezzi, Travis Smith, Philip Chu, José Alves, Rui Caldeira

Journal of Marine Research

Recent technological advances over the past few decades have enabled the development of fully coupled atmosphere-ocean modeling prediction systems that are used today to support short-term (days to weeks) and medium-term (10–21 days) needs for both the operational and research communities. We overview the coupling framework, including model components and grid resolution considerations, as well as the coupling physics by examining heat fluxes between atmosphere and ocean, momentum transfer, and freshwater fluxes. These modeling systems can be run as fully coupled atmosphere-ocean and atmosphere-ocean-wave configurations. Examples of several modeling systems applied to complex coastal regions including Madeira Island, Adriatic Sea, …


The Generation Of Rossby Waves And Wake Eddies By Small Islands, R. C. Musgrave, G. Flierl, T. Peacock Jan 2017

The Generation Of Rossby Waves And Wake Eddies By Small Islands, R. C. Musgrave, G. Flierl, T. Peacock

Journal of Marine Research

The influence of small islands on zonal geostrophic currents is examined in a two-layer configuration. An analytic solution for steady quasigeostrophic flow is derived under the assumption of no upstream influence and is validated numerically in a time-dependent quasigeostrophic model. Under these conditions solutions are the sum of two eigenmodes, which are either arrested Rossby waves or evanescent depending on background flow conditions (layer speeds, stratification, and latitude). In contrast to homogeneous flows, arrested Rossby waves in two layers can occur even when the depth mean flow is westward and can be generated both to the east and west of …


Distribution Of Selenium In The Plume Of The Gediz River, Izmir Bay, Aegean Sea, Nihayet Bizsel, Murat V. Ardelan, Kemal C. Bizsel, Ayşin Suzal, Aylin Demirdaǧ, Deniz Y. Sarica, Eiliv Steinnes Jan 2017

Distribution Of Selenium In The Plume Of The Gediz River, Izmir Bay, Aegean Sea, Nihayet Bizsel, Murat V. Ardelan, Kemal C. Bizsel, Ayşin Suzal, Aylin Demirdaǧ, Deniz Y. Sarica, Eiliv Steinnes

Journal of Marine Research

Selenium (Se) variations in the water column, suspended particulate matter, and sediment through the salinity gradient, together with water-quality parameters, were investigated over four different river conditions: lowest–highest runoff and high–low production period between November 2004 and August 2005 in the plume of the Gediz River, Aegean Sea, Turkey. The drainage basin of the Gediz delta is predominantly agricultural and industrial in character. Dissolved Se exceeded the water-quality standard of 5 μg L–1 during high flow and varied from 9.4 μg L–1 to 0.02 μg L–1 through the salinity gradient during the study period. Particulate Se ranged …


From Weather To Ocean Predictions: An Historical Viewpoint, Nadia Pinardi, L. Cavaleri, G. Coppini, P. De Mey, C. Fratianni, J. Huthnance, P. F. J. Lermusiaux, A. Navarra, R. Preller, S. Tibaldi Jan 2017

From Weather To Ocean Predictions: An Historical Viewpoint, Nadia Pinardi, L. Cavaleri, G. Coppini, P. De Mey, C. Fratianni, J. Huthnance, P. F. J. Lermusiaux, A. Navarra, R. Preller, S. Tibaldi

Journal of Marine Research

This paper reviews the historical development of concepts and practices in the science of ocean predictions. It begins with meteorology, which conducted the first forecasting experiment in 1950, followed by wind waves, and continuing with tidal and storm surge predictions to arrive at the first successful ocean mesoscale forecast in 1983. The work of Professor A. R. Robinson of Harvard University, who produced the first mesoscale ocean predictions for the deep ocean regions is documented for the first time. The scientific and technological developments that made accurate ocean predictions possible are linked with the gradual understanding of the importance of …


Modeling And Forecasting The “Weather Of The Ocean” At The Mesoscale, Anne Marie Treguier, Eric P. Chassignet, Arnaud Le Boyer, Nadia Pinardi Jan 2017

Modeling And Forecasting The “Weather Of The Ocean” At The Mesoscale, Anne Marie Treguier, Eric P. Chassignet, Arnaud Le Boyer, Nadia Pinardi

Journal of Marine Research

We present a historical perspective on ocean mesoscale variability and turbulence, from the physical basis and the first numerical models to recent simulations and forecasts. In the mesoscale range (typically, spatial scales of 100 km and time scales of a month), nonlinearity, and energy cascades were well understood in the 1970s, but the emergence of coherent vortices took place much later. New challenges have arisen with the exploration of the submesoscale regime, where frontal dynamics play a key role and the range of flow instabilities is wider than in the quasi-geostrophic regime. Special focus is placed on the interaction of …


Ocean Forecasting For Wave Energy Production, Alexis Mérigaud, Victor Ramos, Francesco Paparella, John V. Ringwood Jan 2017

Ocean Forecasting For Wave Energy Production, Alexis Mérigaud, Victor Ramos, Francesco Paparella, John V. Ringwood

Journal of Marine Research

There are a variety of requirements for future forecasts in relation to optimizing the production of wave energy. Daily forecasts are required to plan maintenance activities and allow power producers to accurately bid on wholesale energy markets, hourly forecasts are needed to warn of impending inclement conditions, possibly placing devices in survival mode, while wave-by-wave forecasts are required to optimize the real-time loading of the device so that maximum power is extracted from the waves over all sea conditions. In addition, related hindcasts over a long time scale may be performed to assess the power production capability of a specific …


Coupled Ocean–Atmosphere Modeling And Predictions, Arthur J. Miller, Mat Collins, Silvio Gualdi, Tommy G. Jensen, Vasu Misra, Luciano Ponzi Pezzi, David W. Pierce, Dian Putrasahan, Hyodae Seo, Yu-Heng Tseng Jan 2017

Coupled Ocean–Atmosphere Modeling And Predictions, Arthur J. Miller, Mat Collins, Silvio Gualdi, Tommy G. Jensen, Vasu Misra, Luciano Ponzi Pezzi, David W. Pierce, Dian Putrasahan, Hyodae Seo, Yu-Heng Tseng

Journal of Marine Research

Key aspects of the current state of the ability of global and regional climate models to represent dynamical processes and precipitation variations are summarized. Interannual, decadal, and global-warming timescales, wherein the influence of the oceans is relevant and the potential for predictability is highest, are emphasized. Oceanic influences on climate occur throughout the ocean and extend over land to affect many types of climate variations, including monsoons, the El Niño Southern Oscillation, decadal oscillations, and the response to greenhouse gas emissions. The fundamental ideas of coupling between the ocean-atmosphere-land system are explained for these modes in both global and regional …