Records |
Author |
Savage, A.C.; Arbic, B.K.; Alford, M.H.; Ansong, J.K.; Farrar, J.T.; Menemenlis, D.; O'Rourke, A.K.; Richman, J.G.; Shriver, J.F.; Voet, G.; Wallcraft, A.J.; Zamudio, L. |
Title |
Spectral decomposition of internal gravity wave sea surface height in global models: INTERNAL GRAVITY WAVE SEA SURFACE HEIGHT |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
122 |
Issue |
10 |
Pages |
7803-7821 |
Keywords |
high-frequency motions; atmospheric pressure; dynamic height |
Abstract |
Two global ocean models ranging in horizontal resolution from 1/128 to 1/488 are used to study the space and time scales of sea surface height (SSH) signals associated with internal gravity waves (IGWs). Frequency-horizontal wavenumber SSH spectral densities are computed over seven regions of the world ocean from two simulations of the HYbrid Coordinate Ocean Model (HYCOM) and three simulations of the Massachusetts Institute of Technology general circulation model (MITgcm). High wavenumber, high-frequency SSH variance follows the predicted IGW linear dispersion curves. The realism of high-frequency motions (>0:87 cpd) in the models is tested through comparison of the frequency spectral density of dynamic height variance computed from the highest-resolution runs of each model (1/258 HYCOM and 1/488 MITgcm) with dynamic height variance frequency spectral density computed from nine in situ profiling instruments. These high-frequency motions are of particular interest because of their contributions to the small-scale SSH variability that will be observed on a global scale in the upcoming Surface Water and Ocean Topography (SWOT) satellite altimetry mission. The variance at supertidal frequencies can be comparable to the tidal and low-frequency variance for high wavenumbers (length scales smaller than 50 km), especially in the higher-resolution simulations. In the highest-resolution simulations, the high-frequency variance can be greater than the low-frequency variance at these scales. |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ rl18 @ |
Serial |
993 |
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Author |
Savage, A.C.; Arbic, B.K.; Richman, J.G.; Shriver, J.F.; Alford, M.H.; Buijsman, M.C.; Thomas Farrar, J.; Sharma, H.; Voet, G.; Wallcraft, A.J.; Zamudio, L. |
Title |
Frequency content of sea surface height variability from internal gravity waves to mesoscale eddies |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
122 |
Issue |
3 |
Pages |
2519-2538 |
Keywords |
internal gravity waves; internal tides; spectral density |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
14 |
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Author |
Stukel, M.R.; Kahru, M.; Benitez-Nelson, C.R.; Décima, M.; Goericke, R.; Landry, M.R.; Ohman, M.D. |
Title |
Using Lagrangian-based process studies to test satellite algorithms of vertical carbon flux in the eastern North Pacific Ocean |
Type |
$loc['typeJournal Article'] |
Year |
2015 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
120 |
Issue |
11 |
Pages |
7208-7222 |
Keywords |
satellite-derived export; carbon export; model algorithms; mesozooplankton grazing; sinking particles; gravitational flux |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
113 |
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Author |
Timko, P.G.; Arbic, B.K.; Richman, J.G.; Scott, R.B.; Metzger, E.J.; Wallcraft, A.J. |
Title |
Skill testing a three-dimensional global tide model to historical current meter records |
Type |
$loc['typeJournal Article'] |
Year |
2013 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
118 |
Issue |
12 |
Pages |
6914-6933 |
Keywords |
global tides; skill test; HYCOM; tidal currents |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
177 |
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Author |
Weihs, R.R.; Bourassa, M.A. |
Title |
Modeled diurnally varying sea surface temperatures and their influence on surface heat fluxes |
Type |
$loc['typeJournal Article'] |
Year |
2014 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
119 |
Issue |
7 |
Pages |
4101-4123 |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
150 |
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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 |
$loc['typeJournal Article'] |
Year |
2018 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
123 |
Issue |
8 |
Pages |
5808-5823 |
Keywords |
Iceland; Scotland overflow water; Charlie; Gibbs fracture zone; variability; volume transport; eddying simulation |
Abstract |
Observations show that the westward transport of the Iceland‐Scotland overflow water (ISOW) through the Charlie‐Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35‐year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large‐scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid‐Atlantic Ridge, suggesting an out‐of‐phase covarying transport between these two ISOW pathways. |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
952 |
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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 |
$loc['typeJournal Article'] |
Year |
2018 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
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Issue |
8 |
Pages |
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Keywords |
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Abstract |
Observations show that the westward transport of the Iceland‐Scotland overflow water (ISOW) through the Charlie‐Gibbs Fracture Zone (CGFZ) is highly variable. This study examines (a) where this variability comes from and (b) how it is related to the variability of ISOW transport at upstream locations in the Iceland Basin and other ISOW flow pathways. The analyses are based on a 35‐year 1/12° eddying Atlantic simulation that represents well the main features of the observed ISOW in the area of interest, in particular, the transport variability through the CGFZ. The results show that (a) the variability of the ISOW transport is closely correlated with that of the barotropic transports in the CGFZ associated with the meridional displacement of the North Atlantic Current front and is possibly induced by fluctuations of large‐scale zonal wind stress in the Western European Basin east of the CGFZ; (b) the variability of the ISOW transport is increased by a factor of 3 from the northern part of the Iceland Basin to the CGFZ region and transport time series at these two locations are not correlated, further suggesting that the variability at the CGFZ does not come from the upstream source; and (c) the variability of the ISOW transport at the CGFZ is strongly anticorrelated to that of the southward ISOW transport along the eastern flank of the Mid‐Atlantic Ridge, suggesting an out‐of‐phase covarying transport between these two ISOW pathways. |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
1023 |
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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 |
$loc['typeJournal Article'] |
Year |
2020 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
125 |
Issue |
7 |
Pages |
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Keywords |
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Abstract |
Uncertainty exists in the time‐mean total transport of the Antarctic Circumpolar Current (ACC), the world�s strongest ocean current. The two most recent observational programs in Drake Passage, DRAKE and cDrake, yielded transports of 141 and 173.3 Sv, respectively. In this paper, we use a realistic 1/12° global ocean simulation to interpret these observational estimates and reconcile their differences. We first show that the modeled ACC transport in the upper 1000 m is in excellent agreement with repeat shipboard acoustic Doppler current profiler (SADCP) transects and that the exponentially decaying transport profile in the model is consistent with the profile derived from repeat hydrographic data. By further comparing the model results to the cDrake and DRAKE observations, we argue that the modeled 157.3 Sv transport, i.e. approximately the average of the cDrake and DRAKE estimates, is actually representative of the time‐mean ACC transport through the Drake Passage. The cDrake experiment overestimated the barotropic contribution in part because the array undersampled the deep recirculation southwest of the Shackleton Fracture Zone, whereas the surface geostrophic currents used in the DRAKE estimate yielded a weaker near‐surface transport than implied by the SADCP data. We also find that the modeled baroclinic and barotropic transports are not correlated, thus monitoring either baroclinic or barotropic transport alone may be insufficient to assess the temporal variability of the total ACC transport. |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
1107 |
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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 |
$loc['typeJournal Article'] |
Year |
2014 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
119 |
Issue |
8 |
Pages |
5140-5159 |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
152 |
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Author |
Yu, L.; Jin, X. |
Title |
Confidence and sensitivity study of the OAFlux multisensor synthesis of the global ocean surface vector wind from 1987 onward |
Type |
$loc['typeJournal Article'] |
Year |
2014 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
119 |
Issue |
10 |
Pages |
6842-6862 |
Keywords |
remote sensing of ocean surface winds; scatterometer; passive microwave radiometer; error analysis |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
172 |
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