Records
Author
van Sebille, E. ; Griffies, S.M. ; Abernathey, R. ; Adams, T.P. ; Berloff, P. ; Biastoch, A. ; Blanke, B. ; Chassignet, E.P. ; Cheng, Y. ; Cotter, C.J. ; Deleersnijder, E. ; Döös, K. ; Drake, H.F. ; Drijfhout, S. ; Gary, S.F. ; Heemink, A.W. ; Kjellsson, J. ; Koszalka, I.M. ; Lange, M. ; Lique, C. ; MacGilchrist, G.A. ; Marsh, R. ; Mayorga Adame, C.G. ; McAdam, R. ; Nencioli, F. ; Paris, C.B. ; Piggott, M.D. ; Polton, J.A. ; Rühs, S. ; Shah, S.H.A.M. ; Thomas, M.D. ; Wang, J. ; Wolfram, P.J. ; Zanna, L. ; Zika, J.D.
Title
Lagrangian ocean analysis: Fundamentals and practices
Type
$loc['typeJournal Article']
Year
2018
Publication
Ocean Modelling
Abbreviated Journal
Ocean Modelling
Volume
121
Issue
Pages
49-75
Keywords
Ocean circulation ; Lagrangian analysis ; Connectivity ; Particle tracking ; Future modelling
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1463-5003
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
466
Permanent link to this record
Author
Xu, X. ; Rhines, P.B. ; Chassignet, E.P.
Title
On Mapping the Diapycnal Water Mass Transformation of the Upper North Atlantic Ocean
Type
$loc['typeJournal Article']
Year
2018
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
48
Issue
10
Pages
2233-2258
Keywords
Atmosphere-ocean interaction ; Boundary currents ; Diapycnal mixing ; Fronts ; Thermocline circulation
Abstract
Diapycnal water mass transformation is the essence behind the Atlantic meridional overturning circulation (AMOC) and the associated heat/freshwater transports. Existing studies have mostly focused on the transformation that is forced by surface buoyancy fluxes, and the role of interior mixing is much less known. This study maps the three-dimensional structure of the diapycnal transformation, both surface forced and mixing induced, using results of a high-resolution numerical model that have been shown to represent the large-scale structure of the AMOC and the North Atlantic subpolar/subtropical gyres well. The analyses show that 1) annual mean transformation takes place seamlessly from the subtropical to the subpolar North Atlantic following the surface buoyancy loss along the northward-flowing upper AMOC limb; 2) mixing, including wintertime convection and warm-season restratification by mesoscale eddies in the mixed layer and submixed layer diapycnal mixing, drives transformations of (i) Subtropical Mode Water in the southern part of the subtropical gyre and (ii) Labrador Sea Water in the Labrador Sea and on its southward path in the western Newfoundland Basin; and 3) patterns of diapycnal transformations toward lighter and denser water do not align zonally�the net three-dimensional transformation is significantly stronger than the zonally integrated, two-dimensional AMOC streamfunction (50% in the southern subtropical North Atlantic and 60% in the western subpolar North Atlantic).
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
951
Permanent link to this record
Author
Xu, X. ; Rhines, P.B. ; Chassignet, E.P. ; Schmitz Jr., W.J.
Title
Spreading of Denmark Strait Overflow Water in the Western Subpolar North Atlantic: Insights from Eddy-Resolving Simulations with a Passive Tracer
Type
$loc['typeJournal Article']
Year
2015
Publication
Journal of Physical Oceanography
Abbreviated Journal
J. Phys. Oceanogr.
Volume
45
Issue
12
Pages
2913-2932
Keywords
Circulation/ Dynamics ; Abyssal circulation ; Boundary currents ; Ocean circulation ; Ocean dynamics ; Potential vorticity ; Topographic effects
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0022-3670
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
116
Permanent link to this record
Author
Zavala-Hidalgo, J.
Title
Seasonal circulation on the western shelf of the Gulf of Mexico using a high-resolution numerical model
Type
$loc['typeJournal Article']
Year
2003
Publication
Journal of Geophysical Research
Abbreviated Journal
J. Geophys. Res.
Volume
108
Issue
C12
Pages
Keywords
shelf circulation ; western Gulf of Mexico
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0148-0227
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
467
Permanent link to this record
Author
Zavala-Hidalgo, J. ; Gallegos-García, A. ; Martínez-López, B. ; Morey, S.L. ; O'Brien, J.J.
Title
Seasonal upwelling on the Western and Southern Shelves of the Gulf of Mexico
Type
$loc['typeJournal Article']
Year
2006
Publication
Ocean Dynamics
Abbreviated Journal
Ocean Dynamics
Volume
56
Issue
3-4
Pages
333-338
Keywords
Gulf of Mexico ; coastal upwelling ; coastal circulation ; AVHRR SST
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1616-7341
ISBN
Medium
Area
Expedition
Conference
Funding
ONR, NASA
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
435
Permanent link to this record
Author
Zhang, M. ; Wu, Z. ; Qiao, F.
Title
Deep Atlantic Ocean Warming Facilitated by the Deep Western Boundary Current and Equatorial Kelvin Waves
Type
$loc['typeJournal Article']
Year
2018
Publication
Journal of Climate
Abbreviated Journal
J. Climate
Volume
31
Issue
20
Pages
8541-8555
Keywords
Ocean ; Atlantic Ocean ; Heating ; Kelvin waves ; Ocean circulation ; Oceanic variability ; EMPIRICAL MODE DECOMPOSITION ; NONSTATIONARY TIME-SERIES ; NORTH-ATLANTIC ; CLIMATE-CHANGE ; HEAT-CONTENT ; HIATUS ; VARIABILITY ; CIRCULATION ; TEMPERATURE ; PACIFIC
Abstract
Increased heat storage in deep oceans has been proposed to account for the slowdown of global surface warming since the end of the twentieth century. How the imbalanced heat at the surface has been redistributed to deep oceans remains to be elucidated. Here, the evolution of deep Atlantic Ocean heat storage since 1950 on multidecadal or longer time scales is revealed. The anomalous heat in the deep Labrador Sea was transported southward by the shallower core of the deep western boundary current (DWBC). Upon reaching the equator around 1980, this heat transport route bifurcated into two, with one continuing southward along the DWBC and the other extending eastward along a narrow strip (about 4 degrees width) centered at the equator. In the 1990s and 2000s, meridional diffusion helped to spread warming in the tropics, making the eastward equatorial warming extension have a narrow head and wider tail. The deep Atlantic Ocean warming since 1950 had overlapping variability of approximately 60 years. The results suggest that the current basinwide Atlantic Ocean warming at depths of 1000-2000 m can be traced back to the subsurface warming in the Labrador Sea in the 1950s. An inference from these results is that the increased heat storage in the twenty-first century in the deep Atlantic Ocean is unlikely to partly account for the atmospheric radiative imbalance during the last two decades and to serve as an explanation for the current warming hiatus.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0894-8755
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
950
Permanent link to this record
Author
Zhao, X. ; Zhou, C. ; Xu, X. ; Ye, R. ; Tian, J. ; Zhao, W.
Title
Deep Circulation in the South China Sea Simulated in a Regional Model
Type
$loc['typeJournal Article']
Year
2019
Publication
Ocean Sci. Discuss
Abbreviated Journal
Ocean Sci. Discuss
Volume
Issue
Pages
Keywords
Sea Marine, Oceanography/CIMST, PacificOcean, continuous current-meter, deep circulation, deep western boundary
Abstract
The South China Sea (SCS) is the largest marginal sea in the northwest Pacific Ocean. In this study, deep circulation in the SCS is investigated using results from eddy-resolving, regional simulations using the Hybrid Coordinate Ocean Model (HYCOM) verified by continuous current-meter observations. Analysis of these results provides a detailed spatial structure and temporal variability of the deep circulation in the SCS. The major features of the SCS deep circulation are a basin-scale cyclonic gyre and a concentrated deep western boundary current (DWBC). Transport of the DWBC is ∼ 2 Sv at 16.5° N with a width of ∼53 km. Flowing southwestward, the narrow DWBC becomes weaker with a wider range. The model results reveal the existence of 80- to 120-day oscillation in the deep northeastern circulation and the DWBC, which are also the areas with elevated eddy kinetic energy. This intraseasonal oscillation propagates northwestward with a velocity amplitude of ∼ 1.0 to 1.5 cm s-1. The distribution of mixing parameters in the deep SCS plays a role in both spatial structure and volume transport of the deep circulation. Compared with the northern shelf of the SCS with the Luzon Strait, deep circulation in the SCS is more sensitive to the large vertical mixing parameters of the Zhongsha Island Chain area.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1013
Permanent link to this record
Author
Zheng, Y. ; Zhang, R. ; Bourassa, M.A.
Title
Impact of East Asian Winter and Australian Summer Monsoons on the Enhanced Surface Westerlies over the Western Tropical Pacific Ocean Preceding the El Niño Onset
Type
$loc['typeJournal Article']
Year
2014
Publication
Journal of Climate
Abbreviated Journal
J. Climate
Volume
27
Issue
5
Pages
1928-1944
Keywords
Atmospheric circulation ; Forcing ; Dynamics ; Monsoons ; Wind
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0894-8755
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
155
Permanent link to this record
Author
Zou, S. ; Lozier, M.S. ; Xu, X.
Title
Latitudinal Structure of the Meridional Overturning Circulation Variability on Interannual to Decadal Time Scales in the North Atlantic Ocean
Type
$loc['typeJournal Article']
Year
2020
Publication
Journal of Climate
Abbreviated Journal
J. Climate
Volume
33
Issue
9
Pages
3845-3862
Keywords
Deep convection ; Ocean circulation ; Thermocline circulation
Abstract
The latitudinal structure of the Atlantic meridional overturning circulation (AMOC) variability in the North Atlantic is investigated using numerical results from three ocean circulation simulations over the past four to five decades. We show that AMOC variability south of the Labrador Sea (53°N) to 25°N can be decomposed into a latitudinally coherent component and a gyre-opposing component. The latitudinally coherent component contains both decadal and interannual variabilities. The coherent decadal AMOC variability originates in the subpolar region and is reflected by the zonal density gradient in that basin. It is further shown to be linked to persistent North Atlantic Oscillation (NAO) conditions in all three models. The interannual AMOC variability contained in the latitudinally coherent component is shown to be driven by westerlies in the transition region between the subpolar and the subtropical gyre (40°–50°N), through significant responses in Ekman transport. Finally, the gyre-opposing component principally varies on interannual time scales and responds to local wind variability related to the annual NAO. The contribution of these components to the total AMOC variability is latitude-dependent: 1) in the subpolar region, all models show that the latitudinally coherent component dominates AMOC variability on interannual to decadal time scales, with little contribution from the gyre-opposing component, and 2) in the subtropical region, the gyre-opposing component explains a majority of the interannual AMOC variability in two models, while in the other model, the contributions from the coherent and the gyre-opposing components are comparable. These results provide a quantitative decomposition of AMOC variability across latitudes and shed light on the linkage between different AMOC variability components and atmospheric forcing mechanisms.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0894-8755
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1106
Permanent link to this record