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Journal articles on the topic 'Gyre'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2025

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1

Molinari, John, and David Vollaro. "A Subtropical Cyclonic Gyre Associated with Interactions of the MJO and the Midlatitude Jet." Monthly Weather Review 140, no. 2 (2012): 343–57. http://dx.doi.org/10.1175/mwr-d-11-00049.1.

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This paper describes a large cyclonic gyre that lasted several days in the northwest Pacific during July 1988. Cyclonic winds at 850 hPa extended beyond the 2000-km radius with a radius of maximum winds of 700–800 km. The gyre exhibited clear skies within and north of its center. Active convection extended 4000 km in longitude to its south. The Madden–Julian oscillation (MJO) was in its active phase in the Indian Ocean prior to gyre formation. Consistent with earlier studies, diabatic heating in the MJO was associated with an anomalous upper-tropospheric westerly jet over the northeast Asian c

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2

Wu, Liguang, Huijun Zong, and Jia Liang. "Observational Analysis of Tropical Cyclone Formation Associated with Monsoon Gyres." Journal of the Atmospheric Sciences 70, no. 4 (2013): 1023–34. http://dx.doi.org/10.1175/jas-d-12-0117.1.

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Abstract Large-scale monsoon gyres and the involved tropical cyclone formation over the western North Pacific have been documented in previous studies. The aim of this study is to understand how monsoon gyres affect tropical cyclone formation. An observational study is conducted on monsoon gyres during the period 2000–10, with a focus on their structures and the associated tropical cyclone formation. A total of 37 monsoon gyres are identified in May–October during 2000–10, among which 31 monsoon gyres are accompanied with the formation of 42 tropical cyclones, accounting for 19.8% of the total

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3

Gargett, A. E. "The effects of KT ≠ KS in a Stommel-like model of the upper Atlantic Meridional Overturning Circulation under steady surface flux forcing." Journal of Marine Research 77, no. 1 (2019): 243–66. http://dx.doi.org/10.1357/002224019826887353.

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This study examines a simple 6-box model of a single pole-to-pole ocean basin. Each of a northern "polar gyre," a southern "polar gyre," and an "equatorial gyre," consisting of north and south subtropical gyres plus the equatorial region, is represented by two boxes: a surface box receiving constant fluxes of both temperature (heat) and salt (freshwater) and a deep box. The model includes four dominant processes: surface flux forcing, horizontal meridional advection driven by Southern Ocean winds, horizontal eddy diffusion at gyre boundaries, and convection, as well as the process of vertical

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4

Molinari, John, and David Vollaro. "Monsoon Gyres of the Northwest Pacific: Influences of ENSO, the MJO, and the Pacific–Japan Pattern." Journal of Climate 30, no. 5 (2017): 1765–77. http://dx.doi.org/10.1175/jcli-d-16-0393.1.

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Abstract An objective definition of monsoon gyres in the northwest Pacific was developed in order to construct a gyre climatology. Over a 31-yr period, 53 gyres were identified with a median formation location at 16.5°N, 135°E. More than 80% formed during July–September. More than half of gyres developed during El Niño periods at a median location 1200 km farther to the east-southeast than during La Niña. Cyclonic winds at 850 hPa extended across a diameter of more than 4000 km, with maximum tangential wind near the 1000-km radius. A precipitation maximum extended westward for several thousand

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5

Tiedje, Bente, Armin Köhl, and Johanna Baehr. "Potential Predictability of the North Atlantic Heat Transport Based on an Oceanic State Estimate." Journal of Climate 25, no. 24 (2012): 8475–86. http://dx.doi.org/10.1175/jcli-d-11-00606.1.

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Abstract This paper investigates the potential predictability of the meridional heat transport (MHT) in the North Atlantic on interannual time scales using hindcast ensembles based on an oceanic data assimilation product. The work analyzes the prognostic potential predictability (PPP), using the ocean synthesis of the German partner of the consortium for Estimating the Circulation and Climate of the Ocean (GECCO) as initial conditions and as boundary conditions. The PPP of the MHT varies with latitude: local maxima are apparent within the subpolar and the subtropical gyres, and a minimum is ap

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6

Rypina, Irina I., Michael G. Brown, and Huseyin Koçak. "Transport in an Idealized Three-Gyre System with Application to the Adriatic Sea." Journal of Physical Oceanography 39, no. 3 (2009): 675–90. http://dx.doi.org/10.1175/2008jpo3975.1.

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Abstract Motivated by observations of surface drifters in the Adriatic Sea, transport in a three-gyre system is studied with the aid of dynamical systems techniques. Particular attention is paid to the issue of intergyre transport. The velocity field is assumed to be two-dimensional and incompressible and composed of a steady three-gyre background flow on which a time-dependent perturbation is superimposed. Two systems of this type are considered: 1) an observationally motivated, analytically prescribed model consisting of a steady background on which a multiperiodic time-dependent perturbatio

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7

Le Bras, Isabela Astiz, Steven R. Jayne, and John M. Toole. "The Interaction of Recirculation Gyres and a Deep Boundary Current." Journal of Physical Oceanography 48, no. 3 (2018): 573–90. http://dx.doi.org/10.1175/jpo-d-17-0206.1.

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AbstractMotivated by the proximity of the Northern Recirculation Gyre and the deep western boundary current in the North Atlantic, an idealized model is used to investigate how recirculation gyres and a deep flow along a topographic slope interact. In this two-layer quasigeostrophic model, an unstable jet imposed in the upper layer generates barotropic recirculation gyres. These are maintained by an eddy-mean balance of potential vorticity (PV) in steady state. The authors show that the topographic slope can constrain the northern recirculation gyre meridionally and that the gyre’s adjustment

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8

Kang, Sok Kuh, Young Ho Seung, Jong Jin Park, et al. "Seasonal Variability in Middepth Gyral Circulation Patterns in the Central East/Japan Sea as Revealed by Long-Term Argo Data." Journal of Physical Oceanography 46, no. 3 (2016): 937–46. http://dx.doi.org/10.1175/jpo-d-15-0157.1.

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AbstractTrajectories of Argo floats deployed in the East/Japan Sea from 2001 to 2014 reveal that the middepth gyral circulation pattern of the Japan basin, the central part of the East/Japan Sea, undergoes a seasonal variation. The middepth circulation of the Japan basin is found to be characterized usually by the gyres trapped to the east of the Bogorov Rise (E-gyres) and those extending farther westward into the whole basin (BW-gyres). The E-gyre trajectories are generally associated with the turning of the floats toward deeper regions off the isobaths. This occurs in winter either on the no

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9

Hamze-Ziabari, Seyed Mahmood, Ulrich Lemmin, Frédéric Soulignac, Mehrshad Foroughan, and David Andrew Barry. "Basin-scale gyres and mesoscale eddies in large lakes: a novel procedure for their detection and characterization, assessed in Lake Geneva." Geoscientific Model Development 15, no. 23 (2022): 8785–807. http://dx.doi.org/10.5194/gmd-15-8785-2022.

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Abstract. In large lakes subject to the Coriolis force, basin-scale gyres and mesoscale eddies, i.e. rotating coherent water masses, play a key role in spreading biochemical materials and energy throughout the lake. In order to assess the spatial and temporal extent of gyres and eddies, their dynamics and vertical structure, as well as to validate their prediction in numerical simulation results, detailed transect field observations are needed. However, at present it is difficult to forecast when and where such transect field observations should be taken. To overcome this problem, a novel proc

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10

Fox-Kemper, Baylor. "Reevaluating the Roles of Eddies in Multiple Barotropic Wind-Driven Gyres." Journal of Physical Oceanography 35, no. 7 (2005): 1263–78. http://dx.doi.org/10.1175/jpo2743.1.

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Abstract Multiple-gyre ocean models have a weaker mean subtropical circulation than single-gyre calculations with the same viscosity and subtropical forcing. Traditionally, this reduction in circulation is attributed to an intergyre eddy vorticity flux that cancels some of the wind input, part of which does not require a Lagrangian mass exchange (theory of dissipative meandering). Herein the intergyre eddy vorticity flux is shown to be a controlling factor in barotropic models at high Reynolds number only with exactly antisymmetric gyres and slip boundary conditions. Almost no intergyre flux o

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11

Sergeev, A. F., V. B. Lobanov, V. A. Goryachev, et al. "Features of the Structure and Dynamics of Water in the Northern Half of the Sea of Japan in Autumn-Winter Period According to Satellite Data and Ship Observation." Issledovanie Zemli iz Kosmosa, no. 3 (November 17, 2024): 59–77. http://dx.doi.org/10.31857/s0205961424030053.

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The results of studies of the structure and dynamics of water in the zone of a large-scale cyclonic gyre in the northern half of the Sea of Japan are presented, where satellite IR images annually in the autumn-winter period most clearly show two areas of low temperatures, separated by the influx of warm Tsushima waters from Japan. The location of these thermal structures coincides with the location of the western and northern cyclonic gyres, which are inextricably linked with deep upwelling. During the autumn-winter periods 2019-2021 it has been established that deep upwelling in the northwest

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12

Patmore, Ryan D., Paul R. Holland, David R. Munday, Alberto C. Naveira Garabato, David P. Stevens, and Michael P. Meredith. "Topographic Control of Southern Ocean Gyres and the Antarctic Circumpolar Current: A Barotropic Perspective." Journal of Physical Oceanography 49, no. 12 (2019): 3221–44. http://dx.doi.org/10.1175/jpo-d-19-0083.1.

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AbstractIn the Southern Ocean the Antarctic Circumpolar Current is significantly steered by large topographic features, and subpolar gyres form in their lee. The geometry of topographic features in the Southern Ocean is highly variable, but the influence of this variation on the large-scale flow is poorly understood. Using idealized barotropic simulations of a zonal channel with a meridional ridge, it is found that the ridge geometry is important for determining the net zonal volume transport. A relationship is observed between ridge width and volume transport that is determined by the form st

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13

García-Lafuente, Jesús, Cristina Naranjo, Simone Sammartino, José C. Sánchez-Garrido, and Javier Delgado. "The Mediterranean outflow in the Strait of Gibraltar and its connection with upstream conditions in the Alborán Sea." Ocean Science 13, no. 2 (2017): 195–207. http://dx.doi.org/10.5194/os-13-195-2017.

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Abstract. The present study addresses the hypothesis that the Western Alborán Gyre in the Alborán Sea (the westernmost Mediterranean basin adjacent to the Strait of Gibraltar) influences the composition of the outflow through the Strait of Gibraltar. The process invoked is that strong and well-developed gyres help to evacuate the Western Mediterranean Deep Water from the Alborán basin, thus increasing its presence in the outflow, whereas weak gyres facilitate the outflow of Levantine and other intermediate waters. To this aim, in situ observations collected at the Camarinal (the main) and Espa

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14

Zheng, Yixi, David P. Stevens, Karen J. Heywood, Benjamin G. M. Webber, and Bastien Y. Queste. "Reversal of ocean gyres near ice shelves in the Amundsen Sea caused by the interaction of sea ice and wind." Cryosphere 16, no. 7 (2022): 3005–19. http://dx.doi.org/10.5194/tc-16-3005-2022.

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Abstract. Floating ice shelves buttress the Antarctic Ice Sheet, which is losing mass rapidly mainly due to ocean-driven melting and the associated disruption to glacial dynamics. The local ocean circulation near ice shelves is therefore important for the prediction of future ice mass loss and related sea-level rise as it determines the water mass exchange, heat transport under the ice shelf and resultant melting. However, the dynamics controlling the near-coastal circulation are not fully understood. A cyclonic (i.e. clockwise) gyre circulation (27 km radius) in front of the Pine Island Ice S

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15

Barrier, Nicolas, Christophe Cassou, Julie Deshayes, and Anne-Marie Treguier. "Response of North Atlantic Ocean Circulation to Atmospheric Weather Regimes." Journal of Physical Oceanography 44, no. 1 (2014): 179–201. http://dx.doi.org/10.1175/jpo-d-12-0217.1.

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Abstract A new framework is proposed for investigating the atmospheric forcing of North Atlantic Ocean circulation. Instead of using classical modes of variability, such as the North Atlantic Oscillation (NAO) or the east Atlantic pattern, the weather regimes paradigm was used. Using this framework helped avoid problems associated with the assumptions of orthogonality and symmetry that are particular to modal analysis and known to be unsuitable for the NAO. Using ocean-only historical and sensitivity experiments, the impacts of the four winter weather regimes on horizontal and overturning circ

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16

Wilson, Earle A., Andrew F. Thompson, Andrew L. Stewart, and Shantong Sun. "Bathymetric Control of Subpolar Gyres and the Overturning Circulation in the Southern Ocean." Journal of Physical Oceanography 52, no. 2 (2022): 205–23. http://dx.doi.org/10.1175/jpo-d-21-0136.1.

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Abstract The subpolar gyres of the Southern Ocean form an important dynamical link between the Antarctic Circumpolar Current (ACC) and the coastline of Antarctica. Despite their key involvement in the production and export of bottom water and the poleward transport of oceanic heat, these gyres are rarely acknowledged in conceptual models of the Southern Ocean circulation, which tend to focus on the zonally averaged overturning across the ACC. To isolate the effect of these gyres on the regional circulation, we carried out a set of numerical simulations with idealized representations of the Wed

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17

Winter, Jordan, Annette Hynes, Chris Berthiaume, Kelsy Cain, E. Virginia Armbrust, and François Ribalet. "Shifts in phytoplankton community structure across oceanic boundaries." PLOS One 20, no. 6 (2025): e0324466. https://doi.org/10.1371/journal.pone.0324466.

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Phytoplankton communities play an important role in marine food webs and biogeochemical cycles. The transition zones between ocean gyres and surrounding waters represent critical ecological boundaries where environmental gradients drive significant shifts in phytoplankton community structure. This study investigates how nutrient availability and temperature shape the size distribution and composition of small phytoplankton (< 5 μm) communities across the North Pacific Subtropical Gyre (NPSG) boundaries, testing several ecological hypotheses that explain phytoplankton size distribution patte

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Chong, Fiona, Matthew Spencer, Nikolai Maximenko, Jan Hafner, Andrew C. McWhirter, and Rebecca R. Helm. "High concentrations of floating neustonic life in the plastic-rich North Pacific Garbage Patch." PLOS Biology 21, no. 5 (2023): e3001646. http://dx.doi.org/10.1371/journal.pbio.3001646.

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Floating life (obligate neuston) is a core component of the ocean surface food web. However, only 1 region of high neustonic abundance is known so far, the Sargasso Sea in the Subtropical North Atlantic gyre, where floating life provides critical habitat structure and ecosystem services. Here, we hypothesize that floating life is also concentrated in other gyres with converging surface currents. To test this hypothesis, we collected samples through the eastern North Pacific Subtropical Gyre in the area of the North Pacific “Garbage Patch” (NPGP) known to accumulate floating anthropogenic debri

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Nadeau, Louis-Philippe, and Raffaele Ferrari. "The Role of Closed Gyres in Setting the Zonal Transport of the Antarctic Circumpolar Current." Journal of Physical Oceanography 45, no. 6 (2015): 1491–509. http://dx.doi.org/10.1175/jpo-d-14-0173.1.

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AbstractEddy-permitting simulations are used to show that basinlike gyres can be observed in the large-scale barotropic flow of a wind-driven channel with a meridional topographic ridge. This is confirmed using both two-layer quasigeostrophic and 25-level primitive equation models at high horizontal resolution. Comparing results from simulations with and without the topographic ridge, it is shown that the zonal baroclinic transport in the channel increases with increasing wind stress when the bottom topography is flat but not when there is a meridional ridge. The saturation of transport for in

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20

Hogg, Andrew Mc C., William K. Dewar, Pavel Berloff, Sergey Kravtsov, and David K. Hutchinson. "The Effects of Mesoscale Ocean–Atmosphere Coupling on the Large-Scale Ocean Circulation." Journal of Climate 22, no. 15 (2009): 4066–82. http://dx.doi.org/10.1175/2009jcli2629.1.

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Abstract Small-scale variation in wind stress due to ocean–atmosphere interaction within the atmospheric boundary layer alters the temporal and spatial scale of Ekman pumping driving the double-gyre circulation of the ocean. A high-resolution quasigeostrophic (QG) ocean model, coupled to a dynamic atmospheric mixed layer, is used to demonstrate that, despite the small spatial scale of the Ekman-pumping anomalies, this phenomenon significantly modifies the large-scale ocean circulation. The primary effect is to decrease the strength of the nonlinear component of the gyre circulation by approxim

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Williams, Richard G., Vassil Roussenov, M. Susan Lozier, and Doug Smith. "Mechanisms of Heat Content and Thermocline Change in the Subtropical and Subpolar North Atlantic." Journal of Climate 28, no. 24 (2015): 9803–15. http://dx.doi.org/10.1175/jcli-d-15-0097.1.

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Abstract In the North Atlantic, there are pronounced gyre-scale changes in ocean heat content on interannual-to-decadal time scales, which are associated with changes in both sea surface temperature and thermocline thickness; the subtropics are often warm with a thick thermocline when the subpolar gyre is cool with a thin thermocline, and vice versa. This climate variability is investigated using a semidiagnostic dynamical analysis of historical temperature and salinity data from 1962 to 2011 together with idealized isopycnic model experiments. On time scales of typically 5 yr, the tendencies

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Roemmich, D., J. Gilson, R. Davis, P. Sutton, S. Wijffels, and S. Riser. "Decadal Spinup of the South Pacific Subtropical Gyre." Journal of Physical Oceanography 37, no. 2 (2007): 162–73. http://dx.doi.org/10.1175/jpo3004.1.

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Abstract An increase in the circulation of the South Pacific Ocean subtropical gyre, extending from the sea surface to middepth, is observed over 12 years. Datasets used to quantify the decadal gyre spinup include satellite altimetric height, the World Ocean Circulation Experiment (WOCE) hydrographic and float survey of the South Pacific, a repeated hydrographic transect along 170°W, and profiling float data from the global Argo array. The signal in sea surface height is a 12-cm increase between 1993 and 2004, on large spatial scale centered at about 40°S, 170°W. The subsurface datasets show t

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23

Guinasso, Norman L. "Gyre Interactions." Bulletin of the American Meteorological Society 68, no. 1 (1987): 41–42. http://dx.doi.org/10.1175/1520-0477-68.1.41.

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BEHERA, S. K., and P. S. SALVEKAR. "A numerical modelling study of the interannual variability in the Indian Ocean." MAUSAM 46, no. 4 (2022): 409–22. http://dx.doi.org/10.54302/mausam.v46i4.3325.

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A simple reductA1 gravity wind-driven ocean circulation model is used to study the interannual variability in the upper layer of the Indian Ocean (24°S-23°N and 3S°E-IIS0E). The monthly mean wind stress for the period 1977-1986 are used as a forcing in the model. The model reproduces most of the observed features of the annual cycle of the upper layer circulation in the Indian Ocean when was forced with the ten-year average monthly mean wind. The circulation features and the model upper layer thickness show considerable interannual variability in most part of the basin; in particular, the Soma

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Núñez-Riboni, I., M. Bersch, H. Haak, and J. H. Jungclaus. "A multi-decadal meridional displacement of the Subpolar Front in the Newfoundland Basin." Ocean Science Discussions 8, no. 1 (2011): 453–82. http://dx.doi.org/10.5194/osd-8-453-2011.

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Abstract. Observations since the 1950s show a multi-decadal cycle of a meridional displacement of the Subpolar Front (SPF) in the Newfoundland Basin (NFB) in the North Atlantic. The SPF displacement is associated with corresponding variations in the path of the North Atlantic Current. We use the ocean general circulation model MPIOM with enhanced horizontal and vertical resolutions and forced with NCEP/NCAR reanalysis data to study the relation of the SPF displacement to Labrador Sea Water (LSW) volume, atmospheric forcing and intensities of the Subpolar Gyre (SPG) and Meridional Overturning C

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Williams, Richard G., Vassil Roussenov, Doug Smith, and M. Susan Lozier. "Decadal Evolution of Ocean Thermal Anomalies in the North Atlantic: The Effects of Ekman, Overturning, and Horizontal Transport." Journal of Climate 27, no. 2 (2014): 698–719. http://dx.doi.org/10.1175/jcli-d-12-00234.1.

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Abstract Basin-scale thermal anomalies in the North Atlantic, extending to depths of 1–2 km, are more pronounced than the background warming over the last 60 years. A dynamical analysis based on reanalyses of historical data from 1965 to 2000 suggests that these thermal anomalies are formed by ocean heat convergences, augmented by the poorly known air–sea fluxes. The heat convergence is separated into contributions from the horizontal circulation and the meridional overturning circulation (MOC), the latter further separated into Ekman and MOC transport minus Ekman transport (MOC-Ekman) cells.

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Stewart, Andrew L., James C. McWilliams, and Aviv Solodoch. "On the Role of Bottom Pressure Torques in Wind-Driven Gyres." Journal of Physical Oceanography 51, no. 5 (2021): 1441–64. http://dx.doi.org/10.1175/jpo-d-20-0147.1.

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AbstractPrevious studies have concluded that the wind-input vorticity in ocean gyres is balanced by bottom pressure torques (BPT), when integrated over latitude bands. However, the BPT must vanish when integrated over any area enclosed by an isobath. This constraint raises ambiguities regarding the regions over which BPT should close the vorticity budget, and implies that BPT generated to balance a local wind stress curl necessitates the generation of a compensating, nonlocal BPT and thus nonlocal circulation. This study aims to clarify the role of BPT in wind-driven gyres using an idealized i

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Shimokawa, Shinya, and Tomonori Matsuura. "Chaotic Behaviors in the Response of a Quasigeostrophic Oceanic Double Gyre to Seasonal External Forcing." Journal of Physical Oceanography 40, no. 7 (2010): 1458–72. http://dx.doi.org/10.1175/2010jpo4400.1.

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Abstract In an oceanic double-gyre system, nonlinear oscillations of the ocean under seasonally changing external forcing are investigated using a 1.5-layer quasigeostrophic model and a simple model related to energy balance of the oceanic double gyre. In the experiments, the variable parameter is the amplitude of external seasonal forcing and the Reynolds number is fixed as 39, at which periodic shedding of inertial subgyres occurs. The authors found that entrainment (at 2 times the period of the forcing) and intermittency (on–off type), phenomena that are often seen in nonlinear systems, eme

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Núñez-Riboni, I., M. Bersch, H. Haak, J. H. Jungclaus, and K. Lohmann. "A multi-decadal meridional displacement of the Subpolar Front in the Newfoundland Basin." Ocean Science 8, no. 1 (2012): 91–102. http://dx.doi.org/10.5194/os-8-91-2012.

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Abstract. Observations since the 1950s show a multi-decadal cycle of a meridional displacement of the Subpolar Front (SPF) in the Newfoundland Basin (NFB) in the North Atlantic. The SPF displacement is associated with corresponding variations in the path of the North Atlantic Current. We use the ocean general circulation model MPIOM with enhanced horizontal and vertical resolutions and forced with NCEP/NCAR reanalysis data to study the relation of the SPF displacement to atmospheric forcing, intensities of the subpolar gyre (SPG) and Meridional Overturning Circulation (MOC), and Labrador Sea W

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Xu, Xiaobiao, Peter B. Rhines, and Eric P. Chassignet. "Temperature–Salinity Structure of the North Atlantic Circulation and Associated Heat and Freshwater Transports." Journal of Climate 29, no. 21 (2016): 7723–42. http://dx.doi.org/10.1175/jcli-d-15-0798.1.

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Abstract This study investigates the circulation structure and relative contribution of circulation components to the time-mean meridional heat and freshwater transports in the North Atlantic, using numerical results of a high-resolution ocean model that are shown to be in excellent agreement with the observations. The North Atlantic circulation can be separated into the large-scale Atlantic meridional overturning circulation (AMOC) that is diapycnal and the subtropical and subpolar gyres that largely flow along isopycnal surfaces but also include prominent gyre-scale diapycnal overturning in

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Cerovečki, Ivana, and Roland A. de Szoeke. "Initially Forced Long Planetary Waves in the Presence of Nonzonal Mean Flow." Journal of Physical Oceanography 36, no. 3 (2006): 507–25. http://dx.doi.org/10.1175/jpo2864.1.

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Abstract The purpose of this paper is to understand how long planetary waves evolve when propagating in a subtropical gyre. The steady flow of a wind-driven vertically sheared model subtropical gyre is perturbed by Ekman pumping that is localized within a region of finite lateral extent and oscillates periodically at about the annual frequency after sudden initiation. Both the background flow and the infinitesimal perturbations are solutions of a 2½-layer model. The region of forcing is located in the eastern part of the gyre where the steady flow is confined to the uppermost layer (shadow zon

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Riel, Kevin. "North Pacific Gyre." Iowa Review 45, no. 3 (2015): 142–44. http://dx.doi.org/10.17077/0021-065x.7658.

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Gardiner, Barry. "The widening gyre." Philosophers' Magazine, no. 25 (2004): 38–39. http://dx.doi.org/10.5840/tpm200425113.

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Chesser, P. R. "The Widening Gyre." Minnesota review 2012, no. 78 (2012): 24–37. http://dx.doi.org/10.1215/00265667-1550554.

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Rossby, T. "On gyre interactions." Deep Sea Research Part II: Topical Studies in Oceanography 46, no. 1-2 (1999): 139–64. http://dx.doi.org/10.1016/s0967-0645(98)00095-2.

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Csanady, G. T. "Cross-Gyre Transports." Journal of Physical Oceanography 16, no. 10 (1986): 1703–11. http://dx.doi.org/10.1175/1520-0485(1986)016<1703:cgt>2.0.co;2.

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Meccia, Virna L., Doroteaciro Iovino, and Alessio Bellucci. "North Atlantic gyre circulation in PRIMAVERA models." Climate Dynamics 56, no. 11-12 (2021): 4075–90. http://dx.doi.org/10.1007/s00382-021-05686-z.

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AbstractWe study the impact of horizontal resolution in setting the North Atlantic gyre circulation and representing the ocean–atmosphere interactions that modulate the low-frequency variability in the region. Simulations from five state-of-the-art climate models performed at standard and high-resolution as part of the High-Resolution Model Inter-comparison Project (HighResMIP) were analysed. In some models, the resolution is enhanced in the atmospheric and oceanic components whereas, in some other models, the resolution is increased only in the atmosphere. Enhancing the horizontal resolution

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Evans, Dafydd Gwyn, John Toole, Gael Forget, et al. "Recent Wind-Driven Variability in Atlantic Water Mass Distribution and Meridional Overturning Circulation." Journal of Physical Oceanography 47, no. 3 (2017): 633–47. http://dx.doi.org/10.1175/jpo-d-16-0089.1.

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AbstractInterannual variability in the volumetric water mass distribution within the North Atlantic Subtropical Gyre is described in relation to variability in the Atlantic meridional overturning circulation. The relative roles of diabatic and adiabatic processes in the volume and heat budgets of the subtropical gyre are investigated by projecting data into temperature coordinates as volumes of water using an Argo-based climatology and an ocean state estimate (ECCO version 4). This highlights that variations in the subtropical gyre volume budget are predominantly set by transport divergence in

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Spall, Michael. "Potential Vorticity Dynamics of the Arctic Halocline." Journal of Physical Oceanography 50, no. 9 (2020): 2491–506. http://dx.doi.org/10.1175/jpo-d-20-0056.1.

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AbstractAn idealized two-layer shallow water model is applied to the study of the dynamics of the Arctic Ocean halocline. The model is forced by a surface stress distribution reflective of the observed wind stress pattern and ice motion and by an inflow representing the flow of Pacific Water through Bering Strait. The model reproduces the main elements of the halocline circulation: an anticyclonic Beaufort Gyre in the western basin (representing the Canada Basin), a cyclonic circulation in the eastern basin (representing the Eurasian Basin), and a Transpolar Drift between the two gyres directe

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Wang, Guihua, Rui Xin Huang, Jilan Su, and Dake Chen. "The Effects of Thermohaline Circulation on Wind-Driven Circulation in the South China Sea." Journal of Physical Oceanography 42, no. 12 (2012): 2283–96. http://dx.doi.org/10.1175/jpo-d-11-0227.1.

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Abstract The dynamic influence of thermohaline circulation on wind-driven circulation in the South China Sea (SCS) is studied using a simple reduced gravity model, in which the upwelling driven by mixing in the abyssal ocean is treated in terms of an upward pumping distributed at the base of the upper layer. Because of the strong upwelling of deep water, the cyclonic gyre in the northern SCS is weakened, but the anticyclonic gyre in the southern SCS is intensified in summer, while cyclonic gyres in both the southern and northern SCS are weakened in winter. For all seasons, the dynamic influenc

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Pringle, J. D. "California Spiny Lobster (Panulirus interruptus) Larval Retention and Recruitment: A Review and Synthesis." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 11 (1986): 2142–52. http://dx.doi.org/10.1139/f86-263.

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The late Dr. M. W. Johnson studied Panulirus interruptus phyllosome larval natural history from samples collected between 1949 and 1955 inclusive on the California Cooperative Oceanic Fisheries Investigations (CalCOFI) grid. Despite wide broadcasting of larvae, he concluded that gyres and countercurrents must retain larvae to ensure recruitment to the population. The conclusions are reviewed and the data reinterpreted in light of both recent physical oceanographic information and congeneric biology. Phyllosome concentrations are highly aggregated within the California Current: 66% of the larva

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Schopp, Richard. "Multiple Fquilibria for Cross-Gyre Flow between Subpolar and Subtropical Gyres." Journal of Physical Oceanography 23, no. 8 (1993): 1754–66. http://dx.doi.org/10.1175/1520-0485(1993)023<1754:mffcgf>2.0.co;2.

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Berk, J. van den, S. S. Drijfhout, and W. Hazeleger. "Circulation adjustment in the Arctic and Atlantic in response to Greenland and Antarctic mass loss." Climate Dynamics 57, no. 7-8 (2021): 1689–707. http://dx.doi.org/10.1007/s00382-021-05755-3.

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AbstractFollowing a high-end projection for mass loss from the Greenland and Antarctic ice-sheets, a freshwater forcing was applied to the ocean surface in the coupled climate model EC-Earthv2.2 to study the response to meltwater release assuming an RCP8.5 emission scenario. The meltwater forcing results in an overall freshening of the Atlantic that is dominated by advective changes, strongly enhancing the freshening due to dilution by Greenland meltwater release. The strongest circulation change occurs in the western North Atlantic subpolar gyre and in the gyre in the Nordic Seas, leaving the

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Zhai, Xiaoming, and David P. Marshall. "Vertical Eddy Energy Fluxes in the North Atlantic Subtropical and Subpolar Gyres." Journal of Physical Oceanography 43, no. 1 (2013): 95–103. http://dx.doi.org/10.1175/jpo-d-12-021.1.

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Abstract Eddy energy generation and energy fluxes are examined in a realistic eddy-resolving model of the North Atlantic. Over 80% of the wind energy input is found to be released by the generation of eddies through baroclinic instability. The eddy energy generation is located near the surface in the subtropical gyre but deeper down in the subpolar gyre. To reconcile the mismatch between the depth of eddy energy production and the vertical structure of the horizontal dispersion of eddy energy, the vertical eddy energy flux is downward in the subtropical gyre and upward in the subpolar gyre.

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45

Meneghello, Gianluca, Edward Doddridge, John Marshall, Jeffery Scott, and Jean-Michel Campin. "Exploring the Role of the “Ice–Ocean Governor” and Mesoscale Eddies in the Equilibration of the Beaufort Gyre: Lessons from Observations." Journal of Physical Oceanography 50, no. 1 (2020): 269–77. http://dx.doi.org/10.1175/jpo-d-18-0223.1.

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AbstractObservations of Ekman pumping, sea surface height anomaly, and isohaline depth anomaly over the Beaufort Gyre are used to explore the relative importance and role of (i) feedbacks between ice and ocean currents, dubbed the “ice–ocean governor,” and (ii) mesoscale eddy processes in the equilibration of the Beaufort Gyre. A two-layer model of the gyre is fit to observations and used to explore the mechanisms governing the gyre evolution from the monthly to the decennial time scale. The ice–ocean governor dominates the response on interannual time scales, with eddy processes becoming evid

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Druffel, Ellen R. M., S. Griffin, T. P. Guilderson, M. Kashgarian, J. Southon, and D. P. Schrag. "Changes of Subtropical North Pacific Radiocarbon and Correlation with Climate Variability." Radiocarbon 43, no. 1 (2001): 15–25. http://dx.doi.org/10.1017/s0033822200031593.

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We show that high-precision radiocarbon (Δ14C) measurements from annual bands of a Hawaiian surface coral decreased by 7‰ from AD 1893 to 1952. This decrease is coincident with the Suess Effect, which is mostly due to the dilution of natural levels of 14C by 14C-free fossil fuel CO2. This decrease is equal to that expected in surface waters of the subtropical gyres, and indicates that the surface waters of the North Pacific were in steady state with respect to long term mixing of CO2 during the past century. Correlation between Δ14C and North Pacific gyre sea surface temperatures indicates tha

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Zhang, Xinguang, Lishan Liu, Yonghong Wu, B. Wiwatanapataphee, and Yujun Cui. "Solvability and asymptotic properties for an elliptic geophysical fluid flows model in a planar exterior domain." Nonlinear Analysis: Modelling and Control 26, no. 2 (2021): 315–33. http://dx.doi.org/10.15388/namc.2021.26.21202.

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In this paper, we study the solvability and asymptotic properties of a recently derived gyre model of nonlinear elliptic Schrödinger equation arising from the geophysical fluid flows. The existence theorems and the asymptotic properties for radial positive solutions are established due to space theory and analytical techniques, some special cases and specific examples are also given to describe the applicability of model in gyres of geophysical fluid flows.

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Manucharyan, Georgy E., Michael A. Spall, and Andrew F. Thompson. "A Theory of the Wind-Driven Beaufort Gyre Variability." Journal of Physical Oceanography 46, no. 11 (2016): 3263–78. http://dx.doi.org/10.1175/jpo-d-16-0091.1.

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AbstractThe halocline of the Beaufort Gyre varies significantly on interannual to decadal time scales, affecting the freshwater content (FWC) of the Arctic Ocean. This study explores the role of eddies in the Ekman-driven gyre variability. Following the transformed Eulerian-mean paradigm, the authors develop a theory that links the FWC variability to the stability of the large-scale gyre, defined as the inverse of its equilibration time. The theory, verified with eddy-resolving numerical simulations, demonstrates that the gyre stability is explicitly controlled by the mesoscale eddy diffusivit

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Van Wambeke, F., S. Bonnet, T. Moutin, P. Raimbault, G. Alarcón, and C. Guieu. "Factors limiting heterotrophic bacterial production in the southern Pacific Ocean." Biogeosciences 5, no. 3 (2008): 833–45. http://dx.doi.org/10.5194/bg-5-833-2008.

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Abstract. The role of potential factors limiting bacterial growth was investigated along vertical and longitudinal gradients across the South Eastern Pacific Gyre. The effects of glucose, nitrate, ammonium and phosphate additions on heterotrophic bacterial production (using leucine technique) were studied in parallel in unfiltered seawater samples incubated under natural daily irradiance. The enrichments realized on the subsurface showed three types of responses. From 141° W (Marquesas plateau) to approx 125° W, bacteria were not bottom-up controlled, as confirmed by the huge potential of grow

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Pinardi, Nadia, Vladyslav Lyubartsev, Nicola Cardellicchio, et al. "Marine Rapid Environmental Assessment in the Gulf of Taranto: a multiscale approach." Natural Hazards and Earth System Sciences 16, no. 12 (2016): 2623–39. http://dx.doi.org/10.5194/nhess-16-2623-2016.

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Abstract. A multiscale sampling experiment was carried out in the Gulf of Taranto (eastern Mediterranean) providing the first synoptic evidence of the large-scale circulation structure and associated mesoscale variability. The mapping of the mesoscale and large-scale geostrophic circulation showed the presence of an anticyclonic large-scale gyre occupying the central open ocean area of the Gulf of Taranto. On the periphery of the gyre upwelling is evident where surface waters are colder and saltier than at the center of the gyre. Over a 1-week period, the rim current of the gyre undergoes larg

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