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Author
Zou, S. ; Bower, A. ; Furey, H. ; Susan Lozier, M. ; Xu, X.
Title
Redrawing the Iceland-Scotland Overflow Water pathways in the North Atlantic
Type
$loc['typeJournal Article']
Year
2020
Publication
Abbreviated Journal
Nat Commun
Volume
11
Issue
1
Pages
1890
Keywords
Abstract
Iceland-Scotland Overflow Water (ISOW) is a primary deep water mass exported from the Norwegian Sea into the North Atlantic as part of the global Meridional Overturning Circulation. ISOW has historically been depicted as flowing counter-clockwise in a deep boundary current around the subpolar North Atlantic, but this single-boundary-following pathway is being challenged by new Lagrangian observations and model simulations. We show here that ISOW leaves the boundary and spreads into the interior towards the central Labrador and Irminger basins after flowing through the Charlie-Gibbs Fracture Zone. We also describe a newly observed southward pathway of ISOW along the western flank of the Mid-Atlantic Ridge. The partitioning of these pathways is shown to be influenced by deep-reaching eddies and meanders of the North Atlantic Current. Our results, in tandem with previous studies, call for a revision in the historical depiction of ISOW pathways throughout the North Atlantic.
Address
Center for Ocean-Atmosphere Prediction Studies, Florida State University, Tallahassee, FL, USA
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
2041-1723
ISBN
Medium
Area
Expedition
Conference
Funding
strtoupper('3').strtolower('2313002'); strtoupper('P').strtolower('MC7170894')
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1105
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
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
2169-9275
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
152
Permanent link to this record
Author
Zeng, L. ; Chassignet, E.P. ; Schmitt, R.W. ; Xu, X. ; Wang, D.
Title
Salinification in the South China Sea Since Late 2012: A Reversal of the Freshening Since the 1990s
Type
$loc['typeJournal Article']
Year
2018
Publication
Geophysical Research Letters
Abbreviated Journal
Geophys. Res. Lett.
Volume
45
Issue
6
Pages
2744-2751
Keywords
South China Sea ; salinification ; Argo floats ; Aquarius ; SMAP ; PDO
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
0094-8276
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
853
Permanent link to this record
Author
Xu, X. ; Chassignet, E.P. ; Price, J.F. ; Özgökmen, T.M. ; Peters, H.
Title
A regional modeling study of the entraining Mediterranean outflow
Type
$loc['typeJournal Article']
Year
2007
Publication
Journal of Geophysical Research
Abbreviated Journal
J. Geophys. Res.
Volume
112
Issue
C12
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
0148-0227
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
420
Permanent link to this record
Author
Xu, X. ; Schmitz Jr., W.J. ; Hurlburt, H.E. ; Hogan, P.J. ; Chassignet, E.P.
Title
Transport of Nordic Seas overflow water into and within the Irminger Sea: An eddy-resolving simulation and observations
Type
$loc['typeJournal Article']
Year
2010
Publication
Journal of Geophysical Research
Abbreviated Journal
J. Geophys. Res.
Volume
115
Issue
C12
Pages
Keywords
transport ; overflow water ; Nordic Seas ; North Atlantic Deep Water ; Irminger Sea ; Reykjanes Ridge
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
367
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
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
2169-9275
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
952
Permanent link to this record
Author
Legg, S. ; Briegleb, B. ; Chang, Y. ; Chassignet, E.P. ; Danabasoglu, G. ; Ezer, T. ; Gordon, A.L. ; Griffies, S. ; Hallberg, R. ; Jackson, L. ; Large, W. ; Özgökmen, T.M. ; Peters, H. ; Price, J. ; Riemenschneider, U. ; Wu, W. ; Xu, X. ; Yang, J.
Title
Improving Oceanic Overflow Representation in Climate Models: The Gravity Current Entrainment Climate Process Team
Type
$loc['typeJournal Article']
Year
2009
Publication
Bulletin of the American Meteorological Society
Abbreviated Journal
Bull. Amer. Meteor. Soc.
Volume
90
Issue
5
Pages
657-670
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
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Summary Language
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Series Editor
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Series Volume
Series Issue
Edition
ISSN
0003-0007
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
683
Permanent link to this record
Author
Maloney, E.D. ; Gettelman, A. ; Ming, Y. ; Neelin, J.D. ; Barrie, D. ; Mariotti, A. ; Chen, C.-C. ; Coleman, D.R.B. ; Kuo, Y.-H. ; Singh, B. ; Annamalai, H. ; Berg, A. ; Booth, J.F. ; Camargo, S.J. ; Dai, A. ; Gonzalez, A. ; Hafner, J. ; Jiang, X. ; Jing, X. ; Kim, D. ; Kumar, A. ; Moon, Y. ; Naud, C.M. ; Sobel, A.H. ; Suzuki, K. ; Wang, F. ; Wang, J. ; Wing, A.A. ; Xu, X. ; Zhao, M.
Title
Process-Oriented Evaluation of Climate and Weather Forecasting Models
Type
$loc['typeJournal Article']
Year
2019
Publication
Bulletin of the American Meteorological Society
Abbreviated Journal
Bull. Amer. Meteor. Soc.
Volume
100
Issue
9
Pages
1665-1686
Keywords
Abstract
Realistic climate and weather prediction models are necessary to produce confidence in projections of future climate over many decades and predictions for days to seasons. These models must be physically justified and validated for multiple weather and climate processes. A key opportunity to accelerate model improvement is greater incorporation of process-oriented diagnostics (PODs) into standard packages that can be applied during the model development process, allowing the application of diagnostics to be repeatable across multiple model versions and used as a benchmark for model improvement. A POD characterizes a specific physical process or emergent behavior that is related to the ability to simulate an observed phenomenon. This paper describes the outcomes of activities by the Model Diagnostics Task Force (MDTF) under the NOAA Climate Program Office (CPO) Modeling, Analysis, Predictions and Projections (MAPP) program to promote development of PODs and their application to climate and weather prediction models. MDTF and modeling center perspectives on the need for expanded process-oriented diagnosis of models are presented. Multiple PODs developed by the MDTF are summarized, and an open-source software framework developed by the MDTF to aid application of PODs to centers' model development is presented in the context of other relevant community activities. The paper closes by discussing paths forward for the MDTF effort and for community process-oriented diagnosis.
Address
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Series Editor
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Abbreviated Series Title
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Series Issue
Edition
ISSN
0003-0007
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1088
Permanent link to this record
Author
Xu, X. ; Rhines, P.B. ; Chassignet, E.P.
Title
Temperature-Salinity Structure of the North Atlantic Circulation and Associated Heat and Freshwater Transports
Type
$loc['typeJournal Article']
Year
2016
Publication
Journal of Climate
Abbreviated Journal
J. Climate
Volume
29
Issue
21
Pages
7723-7742
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
0894-8755
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
58
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