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Author
Vinayachandran, P. N. ; Davidson, Fraser ; Chassignet, E. P.
Title
Towards joint assessments, modern capabilities and new links for ocean prediction systems
Type
$loc['typeJournal Article']
Year
2020
Publication
Bulletin of the American Meteorological Society
Abbreviated Journal
Bull. Amer. Meteor. Soc.
Volume
101
Issue
4
Pages
Keywords
Abstract
Approximately 260 individuals from forecasting centers, research laboratories, academia, and industry representing 40 countries met to discuss recent developments in operational oceanography and brainstorm about the future directions of ocean prediction services.
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$loc['no']
Call Number
COAPS @ user @
Serial
1091
Permanent link to this record
Author
Wallcraft, A.J. ; Kara, A.B. ; Hurlburt, H.E. ; Chassignet, E.P. ; Halliwell, G.H.
Title
Value of bulk heat flux parameterizations for ocean SST prediction
Type
$loc['typeJournal Article']
Year
2008
Publication
Journal of Marine Systems
Abbreviated Journal
Journal of Marine Systems
Volume
74
Issue
1-2
Pages
241-258
Keywords
Bulk heat fluxes ; Ocean model SST ; Exchange coefficients ; Atmospheric forcing ; Climate
Abstract
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Series Editor
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Series Issue
Edition
ISSN
0924-7963
ISBN
Medium
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Conference
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Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
405
Permanent link to this record
Author
Winterbottom, H.R. ; Chassignet, E.P.
Title
A vortex isolation and removal algorithm for numerical weather prediction model tropical cyclone applications
Type
$loc['typeJournal Article']
Year
2011
Publication
Journal of Advances in Modeling Earth Systems
Abbreviated Journal
J. Adv. Model. Earth Syst.
Volume
3
Issue
4
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
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Summary Language
Original Title
Series Editor
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Series Volume
Series Issue
Edition
ISSN
1942-2466
ISBN
Medium
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Conference
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Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
313
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Author
Winterbottom, H.R. ; Uhlhorn, E.W. ; Chassignet, E.P.
Title
A design and an application of a regional coupled atmosphere-ocean model for tropical cyclone prediction
Type
$loc['typeJournal Article']
Year
2012
Publication
Journal of Advances in Modeling Earth Systems
Abbreviated Journal
J. Adv. Model. Earth Syst.
Volume
4
Issue
4
Pages
Keywords
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
1942-2466
ISBN
Medium
Area
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Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
237
Permanent link to this record
Author
Wu, Z. ; Chassignet, E.P. ; Ji, F. ; Huang, J.
Title
Reply to 'Spatiotemporal patterns of warming'
Type
$loc['typeJournal Article']
Year
2014
Publication
Nature Climate Change
Abbreviated Journal
Nature Climate change
Volume
4
Issue
10
Pages
846-848
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Abstract
Address
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Thesis
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Place of Publication
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Summary Language
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Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1758-678X
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
151
Permanent link to this record
Author
Xu, X. ; Bower, A. ; Furey, H. ; Chassignet, E.P.
Title
Variability of the Iceland-Scotland Overflow Water Transport Through the Charlie-Gibbs Fracture Zone: Results From an Eddying Simulation and Observations
Type
$loc['typeJournal Article']
Year
2018
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
123
Issue
8
Pages
5808-5823
Keywords
Iceland ; Scotland overflow water ; Charlie ; Gibbs fracture zone ; variability ; volume transport ; eddying simulation
Abstract
Observations show that the westward transport of the Iceland‐Scotland overflow water (ISOW) through the Charlie‐Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35‐year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large‐scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid‐Atlantic Ridge, suggesting an out‐of‐phase covarying transport between these two ISOW pathways.
Address
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Publisher
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Summary Language
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Series Editor
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Series Issue
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ISSN
2169-9275
ISBN
Medium
Area
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Conference
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Approved
$loc['no']
Call Number
COAPS @ user @
Serial
952
Permanent link to this record
Author
Xu, X. ; Bower, A. ; Furey, H. ; Chassignet, E.P.
Title
Variability of the Iceland-Scotland Overflow Water Transport Through the Charlie-Gibbs Fracture Zone: Results From an Eddying Simulation and Observations
Type
$loc['typeJournal Article']
Year
2018
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
Issue
8
Pages
Keywords
Abstract
Observations show that the westward transport of the Iceland‐Scotland overflow water (ISOW) through the Charlie‐Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35‐year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large‐scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid‐Atlantic Ridge, suggesting an out‐of‐phase covarying transport between these two ISOW pathways.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
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Series Editor
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Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
2169-9275
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1023
Permanent link to this record
Author
Xu, X. ; Chassignet, E.P., Wang, F.
Title
On the variability of the Atlantic meridional overturning circulation transports in coupled CMIP5 simulations
Type
$loc['typeJournal Article']
Year
2018
Publication
Climate Dynamics
Abbreviated Journal
Clim Dyn.
Volume
51
Issue
11
Pages
6511-6531
Keywords
NAO-AMOC ; CMIP5 ; NAO index ; AMOC index ; meridional pressure gradient ; magnitude ; structure change of the NAO.
Abstract
The Atlantic meridional overturning circulation (AMOC) plays a fundamental role in the climate system, and long-term climate simulations are used to understand the AMOC variability and to assess its impact. This study examines the basic characteristics of the AMOC variability in 44 CMIP5 (Phase 5 of the Coupled Model Inter-comparison Project) simulations, using the 18 atmospherically-forced CORE-II (Phase 2 of the Coordinated Ocean-ice Reference Experiment) simulations as a reference. The analysis shows that on interannual and decadal timescales, the AMOC variability in the CMIP5 exhibits a similar magnitude and meridional coherence as in the CORE-II simulations, indicating that the modeled atmospheric variability responsible for AMOC variability in the CMIP5 is in reasonable agreement with the CORE-II forcing. On multidecadal timescales, however, the AMOC variability is weaker by a factor of more than 2 and meridionally less coherent in the CMIP5 than in the CORE-II simulations. The CMIP5 simulations also exhibit a weaker long-term atmospheric variability in the North Atlantic Oscillation (NAO). However, one cannot fully attribute the weaker AMOC variability to the weaker variability in NAO because, unlike the CORE-II simulations, the CMIP5 simulations do not exhibit a robust NAO-AMOC linkage. While the variability of the wintertime heat flux and mixed layer depth in the western subpolar North Atlantic is strongly linked to the AMOC variability, the NAO variability is not.
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$loc['no']
Call Number
COAPS @ rl18 @
Serial
981
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Author
Xu, X. ; Chassignet, E.P. ; Firing, Y.L. ; Donohue, K.
Title
Antarctic Circumpolar Current transport through Drake Passage: What can we learn from comparing high-resolution model results to observations?
Type
$loc['typeJournal Article']
Year
2020
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
125
Issue
7
Pages
Keywords
Abstract
Uncertainty exists in the time‐mean total transport of the Antarctic Circumpolar Current (ACC), the world�s strongest ocean current. The two most recent observational programs in Drake Passage, DRAKE and cDrake, yielded transports of 141 and 173.3 Sv, respectively. In this paper, we use a realistic 1/12° global ocean simulation to interpret these observational estimates and reconcile their differences. We first show that the modeled ACC transport in the upper 1000 m is in excellent agreement with repeat shipboard acoustic Doppler current profiler (SADCP) transects and that the exponentially decaying transport profile in the model is consistent with the profile derived from repeat hydrographic data. By further comparing the model results to the cDrake and DRAKE observations, we argue that the modeled 157.3 Sv transport, i.e. approximately the average of the cDrake and DRAKE estimates, is actually representative of the time‐mean ACC transport through the Drake Passage. The cDrake experiment overestimated the barotropic contribution in part because the array undersampled the deep recirculation southwest of the Shackleton Fracture Zone, whereas the surface geostrophic currents used in the DRAKE estimate yielded a weaker near‐surface transport than implied by the SADCP data. We also find that the modeled baroclinic and barotropic transports are not correlated, thus monitoring either baroclinic or barotropic transport alone may be insufficient to assess the temporal variability of the total ACC transport.
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Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1107
Permanent link to this record
Author
Xu, X. ; Chassignet, E.P. ; Johns, W.E. ; Schmitz Jr, W.J. ; Metzger, E.J.
Title
Intraseasonal to interannual variability of the Atlantic meridional overturning circulation from eddy-resolving simulations and observations
Type
$loc['typeJournal Article']
Year
2014
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
119
Issue
8
Pages
5140-5159
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Abstract
Address
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Thesis
Publisher
Place of Publication
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Summary Language
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Series Editor
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Abbreviated Series Title
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Series Issue
Edition
ISSN
2169-9275
ISBN
Medium
Area
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Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
152
Permanent link to this record