Records |
Author |
Li, H.; Kanamitsu, M.; Hong, S.-Y.; Yoshimura, K.; Cayan, D.R.; Misra, V. |
Title |
A high-resolution ocean-atmosphere coupled downscaling of the present climate over California |
Type |
$loc['typeJournal Article'] |
Year |
2014 |
Publication |
Climate Dynamics |
Abbreviated Journal |
Clim Dyn |
Volume |
42 |
Issue |
3-4 |
Pages |
701-714 |
Keywords |
Regional climate; Coupled model; Ocean-atmosphere interaction; CCSM3; RSM; ROMS |
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ISSN |
0930-7575 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
136 |
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Author |
Chen, X.; Zhang, Y.; Zhang, M.; Feng, Y.; Wu, Z.; Qiao, F.; Huang, N.E. |
Title |
Intercomparison between observed and simulated variability in global ocean heat content using empirical mode decomposition, part I: modulated annual cycle |
Type |
$loc['typeJournal Article'] |
Year |
2013 |
Publication |
Climate Dynamics |
Abbreviated Journal |
Clim Dyn |
Volume |
41 |
Issue |
11-12 |
Pages |
2797-2815 |
Keywords |
Ocean heat content; Modulated annual cycle; Empirical mode decomposition; Instantaneous frequency; Instantaneous amplitude; CMIP3 |
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0930-7575 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
209 |
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Author |
Subrahmanyam, B.; Murty, V.S.N.; Sharp, R.J.; O'Brien, J.J. |
Title |
Air-sea Coupling During the Tropical Cyclones in the Indian Ocean: A Case Study Using Satellite Observations |
Type |
$loc['typeJournal Article'] |
Year |
2005 |
Publication |
Pure and Applied Geophysics |
Abbreviated Journal |
Pure appl. geophys. |
Volume |
162 |
Issue |
8-9 |
Pages |
1643-1672 |
Keywords |
tropical cyclones; Indian Ocean; EOL; OLR; sea-surface salinity; mixed layer depth; Remote Sensing |
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0033-4553 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
452 |
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Author |
Choi, K.-Y.; Vecchi, G.A.; Wittenberg, A.T. |
Title |
ENSO Transition, Duration, and Amplitude Asymmetries: Role of the Nonlinear Wind Stress Coupling in a Conceptual Model |
Type |
$loc['typeJournal Article'] |
Year |
2013 |
Publication |
Journal of Climate |
Abbreviated Journal |
J. Climate |
Volume |
26 |
Issue |
23 |
Pages |
9462-9476 |
Keywords |
Atmosphere-ocean interaction; ENSO; Numerical analysis/modeling; Southern Oscillation |
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0894-8755 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
210 |
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Author |
Perrie, W.; Zhang, W.; Bourassa, M.; Shen, H.; Vachon, P.W. |
Title |
Impact of Satellite Winds on Marine Wind Simulations |
Type |
$loc['typeJournal Article'] |
Year |
2008 |
Publication |
Weather and Forecasting |
Abbreviated Journal |
Wea. Forecasting |
Volume |
23 |
Issue |
2 |
Pages |
290-303 |
Keywords |
Satellite observations; Data assimilation; Hurricanes; Waves, oceanic; Ocean modeling; Numerical analysis |
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ISSN |
0882-8156 |
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Funding |
NASA, OVWST |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
680 |
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Author |
Nielsen, E.R.; Schumacher, R.S.; Keclik, A.M. |
Title |
The Effect of the Balcones Escarpment on Three Cases of Extreme Precipitation in Central Texas |
Type |
$loc['typeJournal Article'] |
Year |
2016 |
Publication |
Monthly Weather Review |
Abbreviated Journal |
Mon. Wea. Rev. |
Volume |
144 |
Issue |
1 |
Pages |
119-138 |
Keywords |
Circulation/ Dynamics; Orographic effects; Atm/Ocean Structure/ Phenomena; Flood events; Physical Meteorology and Climatology; Hydrometeorology; Forecasting; Ensembles; Numerical weather prediction/forecasting |
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ISSN |
0027-0644 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
102 |
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Author |
Smith, S.R.; Briggs, K.; Lopez, N.; Kourafalou, V. |
Title |
Applying Automated Underway Ship Observations to Numerical Model Evaluation |
Type |
$loc['typeJournal Article'] |
Year |
2016 |
Publication |
Journal of Atmospheric and Oceanic Technology |
Abbreviated Journal |
J. Atmos. Oceanic Technol. |
Volume |
33 |
Issue |
3 |
Pages |
409-428 |
Keywords |
Ship observations; Automatic weather stations; Ocean models; Model evaluation/performance; In situ atmospheric observations; Observational techniques and algorithms; Models and modeling; In situ oceanic observations |
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ISSN |
0739-0572 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
53 |
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Author |
Steffen, J.; Bourassa, M. |
Title |
Barrier Layer Development Local to Tropical Cyclones based on Argo Float Observations |
Type |
$loc['typeJournal Article'] |
Year |
2018 |
Publication |
Journal of Physical Oceanography |
Abbreviated Journal |
J. Phys. Oceanogr. |
Volume |
48 |
Issue |
9 |
Pages |
1951-1968 |
Keywords |
SEA-SURFACE TEMPERATURE; UPPER-OCEAN RESPONSE; NINO SOUTHERN-OSCILLATION; MIXED-LAYER; INDIAN-OCEAN; HEAT-BUDGET; NUMERICAL SIMULATIONS; HURRICANES; VARIABILITY; PACIFIC |
Abstract |
The objective of this study is to quantify barrier layer development due to tropical cyclone (TC) passage using Argo float observations of temperature and salinity. To accomplish this objective, a climatology of Argo float measurements is developed from 2001 to 2014 for the Atlantic, eastern Pacific, and central Pacific basins. Each Argo float sample consists of a prestorm and poststorm temperature and salinity profile pair. In addition, a no-TC Argo pair dataset is derived for comparison to account for natural ocean state variability and instrument sensitivity. The Atlantic basin shows a statistically significant increase in barrier layer thickness (BLT) and barrier layer potential energy (BLPE) that is largely attributable to an increase of 2.6 m in the post-TC isothermal layer depth (ITLD). The eastern Pacific basin shows no significant changes to any barrier layer characteristic, likely due to a shallow and highly stratified pycnocline. However, the near-surface layer freshens in the upper 30 m after TC passage, which increases static stability. Finally, the central Pacific has a statistically significant freshening in the upper 20-30 m that increases upper-ocean stratification by similar to 35%. The mechanisms responsible for increases in BLPE vary between the Atlantic and both Pacific basins; the Atlantic is sensitive to ITLD deepening, while the Pacific basins show near-surface freshening to be more important in barrier layer development. In addition, Argo data subsets are used to investigate the physical relationships between the barrier layer and TC intensity, TC translation speed, radial distance from TC center, and time after TC passage. |
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ISSN |
0022-3670 |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
970 |
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Author |
Xu, X.; Rhines, P.B.; Chassignet, E.P. |
Title |
On Mapping the Diapycnal Water Mass Transformation of the Upper North Atlantic Ocean |
Type |
$loc['typeJournal Article'] |
Year |
2018 |
Publication |
Journal of Physical Oceanography |
Abbreviated Journal |
J. Phys. Oceanogr. |
Volume |
48 |
Issue |
10 |
Pages |
2233-2258 |
Keywords |
Atmosphere-ocean interaction; Boundary currents; Diapycnal mixing; Fronts; Thermocline circulation |
Abstract |
Diapycnal water mass transformation is the essence behind the Atlantic meridional overturning circulation (AMOC) and the associated heat/freshwater transports. Existing studies have mostly focused on the transformation that is forced by surface buoyancy fluxes, and the role of interior mixing is much less known. This study maps the three-dimensional structure of the diapycnal transformation, both surface forced and mixing induced, using results of a high-resolution numerical model that have been shown to represent the large-scale structure of the AMOC and the North Atlantic subpolar/subtropical gyres well. The analyses show that 1) annual mean transformation takes place seamlessly from the subtropical to the subpolar North Atlantic following the surface buoyancy loss along the northward-flowing upper AMOC limb; 2) mixing, including wintertime convection and warm-season restratification by mesoscale eddies in the mixed layer and submixed layer diapycnal mixing, drives transformations of (i) Subtropical Mode Water in the southern part of the subtropical gyre and (ii) Labrador Sea Water in the Labrador Sea and on its southward path in the western Newfoundland Basin; and 3) patterns of diapycnal transformations toward lighter and denser water do not align zonally�the net three-dimensional transformation is significantly stronger than the zonally integrated, two-dimensional AMOC streamfunction (50% in the southern subtropical North Atlantic and 60% in the western subpolar North Atlantic). |
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0022-3670 |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
951 |
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Author |
Ansong, J.K.; Arbic, B.K.; Simmons, H.L.; Alford, M.H.; Buijsman, M.C.; Timko, P.G.; Richman, J.G.; Shriver, J.F.; Wallcraft, A.J. |
Title |
Geographical Distribution of Diurnal and Semidiurnal Parametric Subharmonic Instability in a Global Ocean Circulation Model |
Type |
$loc['typeJournal Article'] |
Year |
2018 |
Publication |
Journal of Physical Oceanography |
Abbreviated Journal |
J. Phys. Oceanogr. |
Volume |
48 |
Issue |
6 |
Pages |
1409-1431 |
Keywords |
Baroclinic flows; Internal waves; Nonlinear dynamics; Ocean dynamics; Baroclinic models; Ocean models |
Abstract |
The evidence for, baroclinic energetics of, and geographic distribution of parametric subharmonic instability (PSI) arising from both diurnal and semidiurnal tides in a global ocean general circulation model is investigated using 1/12.5° and 1/25° simulations that are forced by both atmospheric analysis fields and the astronomical tidal potential. The paper examines whether PSI occurs in the model, and whether it accounts for a significant fraction of the tidal baroclinic energy loss. Using energy transfer calculations and bispectral analyses, evidence is found for PSI around the critical latitudes of the tides. The intensity of both diurnal and semidiurnal PSI in the simulations is greatest in the upper ocean, consistent with previous results from idealized simulations, and quickly drops off about 5° from the critical latitudes. The sign of energy transfer depends on location; the transfer is positive (from the tides to subharmonic waves) in some locations and negative in others. The net globally integrated energy transfer is positive in all simulations and is 0.5%�10% of the amount of energy required to close the baroclinic energy budget in the model. The net amount of energy transfer is about an order of magnitude larger in the 1/25° semidiurnal simulation than the 1/12.5° one, implying the dependence of the rate of energy transfer on model resolution. |
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0022-3670 |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
976 |
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