Records
Author
Ajayi, A. ; Le Sommer, J. ; Chassignet, E. ; Molines, J.-M. ; Xu, X. ; Albert, A. ; Cosme, E.
Title
Spatial and Temporal Variability of the North Atlantic Eddy Field From Two Kilometric-Resolution Ocean Models
Type
$loc['typeJournal Article']
Year
2020
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
125
Issue
5
Pages
Keywords
submesoscales ; fine‐ ; scales ; enstrophy ; eddies ; SWOT
Abstract
Ocean circulation is dominated by turbulent geostrophic eddy fields with typical scales ranging from 10 to 300 km. At mesoscales (>50 km), the size of eddy structures varies regionally following the Rossby radius of deformation. The variability of the scale of smaller eddies is not well known due to the limitations in existing numerical simulations and satellite capability. Nevertheless, it is well established that oceanic flows (<50 km) generally exhibit strong seasonality. In this study, we present a basin‐scale analysis of coherent structures down to 10 km in the North Atlantic Ocean using two submesoscale‐permitting ocean models, a NEMO‐based North Atlantic simulation with a horizontal resolution of 1/60 (NATL60) and an HYCOM‐based Atlantic simulation with a horizontal resolution of 1/50 (HYCOM50). We investigate the spatial and temporal variability of the scale of eddy structures with a particular focus on eddies with scales of 10 to 100 km, and examine the impact of the seasonality of submesoscale energy on the seasonality and distribution of coherent structures in the North Atlantic. Our results show an overall good agreement between the two models in terms of surface wave number spectra and seasonal variability. The key findings of the paper are that (i) the mean size of ocean eddies show strong seasonality; (ii) this seasonality is associated with an increased population of submesoscale eddies (10�50 km) in winter; and (iii) the net release of available potential energy associated with mixed layer instability is responsible for the emergence of the increased population of submesoscale eddies in wintertime.
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
1104
Permanent link to this record
Author
Basu, S. ; Meyers, S.D. ; O'Brien, J.J.
Title
Annual and interannual sea level variations in the Indian Ocean from TOPEX/Poseidon observations and ocean model simulations
Type
$loc['typeJournal Article']
Year
2000
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res.
Volume
105
Issue
C1
Pages
975-994
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
521
Permanent link to this record
Author
Bourassa, M.A. ; Legler, D.M. ; O'Brien, J.J. ; Smith, S.R.
Title
SeaWinds validation with research vessels
Type
$loc['typeJournal Article']
Year
2003
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res.
Volume
108
Issue
C2
Pages
Keywords
remote sensing ; SeaWinds ; validation ; ocean ; winds
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
NASA, NSF, ONR
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
484
Permanent link to this record
Author
Bourassa, M.A. ; Zamudio, L. ; O'Brien, J.J.
Title
Noninertial flow in NSCAT observations of Tehuantepec winds
Type
$loc['typeJournal Article']
Year
1999
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res.
Volume
104
Issue
C5
Pages
11311-11319
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
528
Permanent link to this record
Author
Brzezinski, M.A. ; Krause, J.W. ; Bundy, R.M. ; Barbeau, K.A. ; Franks, P. ; Goericke, R. ; Landry, M.R. ; Stukel, M.R.
Title
Enhanced silica ballasting from iron stress sustains carbon export in a frontal zone within the California Current
Type
$loc['typeJournal Article']
Year
2015
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
120
Issue
7
Pages
4654-4669
Keywords
phytoplankton ; diatoms ; iron limitation ; nutrient ratios ; nutrient stoichiometry ; carbon export
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
97
Permanent link to this record
Author
Chakraborty, A. ; Sharma, R. ; Kumar, R. ; Basu, S.
Title
An OGCM assessment of blended OSCAT winds
Type
$loc['typeJournal Article']
Year
2014
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
119
Issue
1
Pages
173-186
Keywords
scatterometer ; ocean modeling ; EOF ; OSCAR ; MSLA ; EnOI
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
157
Permanent link to this record
Author
Dukhovskoy, D.S. ; Bourassa, M.A. ; Petersen, G.N. ; Steffen, J.
Title
Comparison of the ocean surface vector winds from atmospheric reanalysis and scatterometer-based wind products over the Nordic Seas and the northern North Atlantic and their application for ocean modeling
Type
$loc['typeJournal Article']
Year
2017
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
122
Issue
3
Pages
1943-1973
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
25
Permanent link to this record
Author
Dukhovskoy, D.S. ; Myers, P.G. ; Platov, G. ; Timmermans, M.-L. ; Curry, B. ; Proshutinsky, A. ; Bamber, J.L. ; Chassignet, E. ; Hu, X. ; Lee, C.M. ; Somavilla, R.
Title
Greenland freshwater pathways in the sub-Arctic Seas from model experiments with passive tracers
Type
$loc['typeJournal Article']
Year
2016
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
121
Issue
1
Pages
877-907
Keywords
Greenland Ice Sheet melting ; Greenland freshwater ; thermohaline circulation ; Nordic Seas ; sub-Arctic seas ; Baffin Bay ; Labrador Sea
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
35
Permanent link to this record
Author
Dukhovskoy, D.S. ; Ubnoske, J. ; Blanchard-Wrigglesworth, E. ; Hiester, H.R. ; Proshutinsky, A.
Title
Skill metrics for evaluation and comparison of sea ice models
Type
$loc['typeJournal Article']
Year
2015
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
120
Issue
9
Pages
5910-5931
Keywords
sea ice model ; sea ice model validation ; model skill assessment
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
101
Permanent link to this record
Author
Dukhovskoy, D.S. ; Yashayaev, I. ; Proshutinsky, A. ; Bamber, J.L. ; Bashmachnikov, I.L. ; Chassignet, E.P. ; Lee, C.M. ; Tedstone, A.J.
Title
Role of Greenland Freshwater Anomaly in the Recent Freshening of the Subpolar North Atlantic
Type
$loc['typeJournal Article']
Year
2019
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
124
Issue
5
Pages
3333-3360
Keywords
Greenland ice sheet melting ; freshwater anomaly ; subpolar North Atlantic ; subpolar gyre ; passive tracer numerical experiment ; freshwater budget
Abstract
The cumulative Greenland freshwater flux anomaly has exceeded 5000 km3 since the 1990s. The volume of this surplus fresh water is expected to cause substantial freshening in the North Atlantic. Analysis of hydrographic observations in the subpolar seas reveal freshening signals in the 2010s. The sources of this freshening are yet to be determined. In this study, the relationship between the surplus Greenland freshwater flux and this freshening is tested by analyzing the propagation of the Greenland freshwater anomaly and its impact on salinity in the subpolar North Atlantic based on observational data and numerical experiments with and without the Greenland runoff. A passive tracer is continuously released during the simulations at freshwater sources along the coast of Greenland to track the Greenland freshwater anomaly. Tracer budget analysis shows that 44% of the volume of the Greenland freshwater anomaly is retained in the subpolar North Atlantic by the end of the simulation. This volume is sufficient to cause strong freshening in the subpolar seas if it stays in the upper 50�100 m. However, in the model the anomaly is mixed down to several hundred meters of the water column resulting in smaller magnitudes of freshening compared to the observations. Therefore, the simulations suggest that the accelerated Greenland melting would not be sufficient to cause the observed freshening in the subpolar seas and other sources of fresh water have contributed to the freshening. Impacts on salinity in the subpolar seas of the freshwater transport through Fram Strait and precipitation are discussed.
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
1029
Permanent link to this record