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Bohua Huang, E. Schneider (1995)
The Response of an Ocean General Circulation Model to Surface Wind Stress Produced by an Atmospheric General Circulation ModelMonthly Weather Review, 123
C. Maes, G. Madec, P. Delecluse (1997)
Sensitivity of an Equatorial Pacific OGCM to the Lateral DiffusionMonthly Weather Review, 125
El Niflo, F. Jin, J. Neelin, M. Ghil (1994)
El Ni�o on the Devil's Staircase: Annual Subharmonic Steps to ChaosScience, 264
C. Gordon, R. Corry (1991)
A model simulation of the seasonal cycle in the tropical Pacific Ocean using climatological and modeled surface forcingJournal of Geophysical Research, 96
R. Legeckis (1977)
Long Waves in the Eastern Equatorial Pacific Ocean: A View from a Geostationary SatelliteScience, 197
J. Picaut, M. Ioualalen, T. Delcroix, F. Masia, R. Murtugudde, J. Vialard (2001)
The oceanic zone of convergence on the eastern edge of the Pacific warm pool: A synthesis of results and implications for El Niño‐Southern Oscillation and biogeochemical phenomenaJournal of Geophysical Research, 106
D. Enfield (1986)
Zonal and Seasonal Variations of the Near-Surface Heat Balance of the Equatorial Pacific OceanJournal of Physical Oceanography, 16
B. Blanke, P. Delecluse (1993)
Variability of the Tropical Atlantic Ocean Simulated by a General Circulation Model with Two Different Mixed-Layer PhysicsJournal of Physical Oceanography, 23
W. Liu, K. Katsaros, J. Businger (1979)
Bulk Parameterization of Air-Sea Exchanges of Heat and Water Vapor Including the Molecular Constraints at the InterfaceJournal of the Atmospheric Sciences, 36
H. Bryden, E. Brady (1989)
Eddy momentum and heat fluxes and their effects on the circulation of the equatorial Pacific OceanJournal of Marine Research, 47
(2001)
V I A L A R rameterizations in an OGCM
M. Pontaud, O. Thual (1998)
Coupled processes for equatorial Pacific interannual variabilityQuarterly Journal of the Royal Meteorological Society, 124
R. Szoeke (1999)
An Improved Bound for the Complex Phase Speed of Baroclinic InstabilityJournal of Physical Oceanography, 29
A. Lazar, G. Madec, P. Delecluse (1999)
The Deep Interior Downwelling, the Veronis Effect, and Mesoscale Tracer Transport Parameterizations in an OGCMJournal of Physical Oceanography, 29
(1998)
Impact of TAO vs. ERS wind stresses onto simulations of the tropical Pacific Ocean during the 1993–1998 period by the OPA OGCM
D. Battisti (1988)
Dynamics and Thermodynamics of a Warming Event in a Coupled Tropical Atmosphere–Ocean ModelJournal of the Atmospheric Sciences, 45
K. Wyrtki (1981)
An Estimate of Equatorial Upwelling in the PacificJournal of Physical Oceanography, 11
W. Narváez, M. OrtizBevia, J. Oberhuber (1998)
The variability of the tropical AtlanticJournal of Geophysical Research, 103
H. Bryden, E. Brady (1985)
Diagnostic Model of the Three-Dimensional Circulation in the Upper Equatorial Pacific OceanJournal of Physical Oceanography, 15
A. Arakawa (1972)
Design of the UCLA general circulation model
D. Harrison, B. Giese, E. Sarachik (1990)
Mechanisms of SST Change in the Equatorial Waveguide during the 1982–83 ENSOJournal of Climate, 3
Chunzai Wang, R. Weisberg (2000)
The 1997–98 El Niño Evolution Relative to Previous El Niño EventsJournal of Climate, 13
E. Tziperman, Lewi Stone, M. Cane, Hans Jarosh (1994)
El Ni�o Chaos: Overlapping of Resonances Between the Seasonal Cycle and the Pacific Ocean-Atmosphere OscillatorScience, 264
E. Rasmusson, T. Carpenter (1982)
Variations in Tropical Sea Surface Temperature and Surface Wind Fields Associated with the Southern Oscillation/El NiñoMonthly Weather Review, 110
(1994)
ENSO on devil ’ s staircase
M. Mcphaden, B. Taft (1988)
Dynamics of Seasonal and Intraseasonal Variability in the Eastern Equatorial PacificJournal of Physical Oceanography, 18
J. Neelin (1991)
The Slow Sea Surface Temperature Mode and the Fast-Wave Limit: Analytic Theory for Tropical Interannual Oscillations and Experiments in a Hybrid Coupled ModelJournal of the Atmospheric Sciences, 48
S. Levitus (1982)
Climatological Atlas of the World Ocean
Stuart Smith (1988)
Coefficients for sea surface wind stress, heat flux, and wind profiles as a function of wind speed and temperatureJournal of Geophysical Research, 93
Chunzai Wang, R. Weisberg (1994)
On the “Slow Mode” Mechanism in ENSO-Related Coupled Ocean–Atmosphere ModelsJournal of Climate, 7
J. Vialard, P. Delecluse (1998)
An OGCM Study for the TOGA Decade. Part II: Barrier-Layer Formation and VariabilityJournal of Physical Oceanography, 28
(1997)
Influence de la salinité sur les interactions couplées océan–atmosphère dans le Pacifique Ouest
Xuri Yu, M. Mcphaden (1999)
Seasonal Variability in the Equatorial PacificJournal of Physical Oceanography, 29
C. Frankignoul, F. Bonjean, G. Reverdin (1996)
Interannual variability of surface currents in the tropical Pacific during 1987–1993Journal of Geophysical Research, 101
S. Philander (1976)
Instabilities of zonal equatorial currents, 2Journal of Geophysical Research, 83
A. Miller, T. Barnett, N. Graham (1993)
A Comparison of Some Tropical Ocean Models: Hindcast Skill and El Niño EvolutionJournal of Physical Oceanography, 23
G. Reverdin, C. Frankignoul, E. Kestenare, M. Mcphaden (1994)
Seasonal variability in the surface currents of the equatorial PacificJournal of Geophysical Research, 99
M. Mcphaden, A. Busalacchi, R. Cheney, J. Donguy, K. Gage, D. Halpern, M. Ji, P. Julian, G. Meyers, G. Mitchum, P. Niiler, J. Picaut, R. Reynolds, N. Smith, K. Takeuchi (1998)
The Tropical Ocean‐Global Atmosphere observing system: A decade of progressJournal of Geophysical Research, 103
J. Oberhuber (1988)
An Atlas Based on the COADS Data Set: the Budgets of Heat Buoyancy and Turbulent Kinetic Energy at t
G. Lagerloef, G. Mitchum, R. Lukas, P. Niiler (1999)
Tropical Pacific near‐surface currents estimated from altimeter, wind, and drifter dataJournal of Geophysical Research, 104
M. Mcphaden (1999)
Genesis and evolution of the 1997-98 El NinoScience, 283 5404
J. Stevenson, P. Niiler (1983)
Upper Ocean Heat Budget During the Hawaii-to-Tahiti Shuttle ExperimentJournal of Physical Oceanography, 13
R. Reynolds, Thomas Smith (1994)
Improved Global Sea Surface Temperature Analyses Using Optimum InterpolationJournal of Climate, 7
M. Swenson, D. Hansen (1999)
Tropical Pacific Ocean Mixed Layer Heat Budget: The Pacific Cold TongueJournal of Physical Oceanography, 29
(1988)
Pergamon, 143–172
J. King (1997)
Currents of change: El Niño's impact on climate and societyWeather, 52
D. Jackett, T. McDougall (1995)
Minimal Adjustment of Hydrographic Profiles to Achieve Static StabilityJournal of Atmospheric and Oceanic Technology, 12
A. Bentamy, Y. Quilfen, F. Gohin, N. Grima, M. Lenaour, J. Servain (1996)
Determination and validation of average wind fields from ERS-1 scatterometer measurementsThe Global Atmosphere and Ocean System, 4
M. Ioualalen, C. Hénin (2001)
Thermohaline variability of the western tropical Pacific during 1995–1998: On the erosion/reconstitution of the fresh poolJournal of Geophysical Research, 106
(1999)
The Trident Pacific model. Part 2: The thermodynamical model and the role of long equatorial wave reflections during the TOPEX/Poseidon period
G. Madec, P. Delecluse, M. Imbard, C. Lévy (1998)
OPA 8.1 Ocean General Circulation Model reference manual, 11
P. Flament, S. Kennan, R. Knox, P. Niiler, R. Bernstein (1996)
The three-dimensional structure of an upper ocean vortex in the tropical Pacific OceanNature, 383
E. Galanti, E. Tziperman (2000)
ENSO's Phase Locking to the Seasonal Cycle in the Fast-SST, Fast-Wave, and Mixed-Mode RegimesJournal of the Atmospheric Sciences, 57
R. Tait (1979)
Modelling and prediction of the upper layers of the oceanApplied Mathematical Modelling, 3
R. Seager (1989)
Modeling Tropical Pacific Sea Surface Temperature: 1970–87Journal of Physical Oceanography, 19
S. Kennan, P. Flament (2000)
Observations of a Tropical Instability VortexJournal of Physical Oceanography, 30
M. Mcphaden, A. Busalacchi, J. Picaut (1988)
Observations and wind-forced model simulations of the mean seasonal cycle in tropical Pacific sea surface topographyJournal of Geophysical Research, 93
J. Vialard, P. Delecluse (1998)
An OGCM Study for the TOGA Decade. Part I: Role of Salinity in the Physics of the Western Pacific Fresh PoolJournal of Physical Oceanography, 28
J. Picaut, F. Masia, Y. Penhoat (1997)
An Advective-Reflective Conceptual Model for the Oscillatory Nature of the ENSOScience, 277
A. Miller, J. Oberhuber, N. Graham, T. Barnett (1992)
Tropical Pacific Ocean response to observed winds in a layered general circulation modelJournal of Geophysical Research, 97
T. Barnett, M. Latif, E. Kirk, E. Roeckner (1991)
On ENSO PhysicsJournal of Climate, 4
Weimin Wang, M. Mcphaden (1999)
The Surface-Layer Heat Balance in the Equatorial Pacific Ocean. Part I: Mean Seasonal Cycle*Journal of Physical Oceanography, 29
J. Picaut, Mansour Ioualalen, C. Menkes, T. Delcroix, M. Mcphaden (1996)
Mechanism of the Zonal Displacements of the Pacific Warm Pool: Implications for ENSOScience, 274
S. Hayes, P. Chang, M. Mcphaden (1991)
Variability of the sea surface temperature in the eastern equatorial Pacific during 1986–1988Journal of Geophysical Research, 96
N. Grima, A. Bentamy, K. Katsaros, Y. Quilfen, P. Delecluse, C. Lévy (1999)
Sensitivity of an oceanic general circulation model forced by satellite wind stress fieldsJournal of Geophysical Research, 104
J. Proehl (1996)
Linear Stability of Equatorial Zonal FlowsJournal of Physical Oceanography, 26
D. Dewitt, E. Schneider (1999)
The Processes Determining the Annual Cycle of Equatorial Sea Surface Temperature: A Coupled General Circulation Model PerspectiveMonthly Weather Review, 127
D. Hansen, C. Paul (1984)
Genesis and effects of long waves in the equatorial PacificJournal of Geophysical Research, 89
S. Philander, A. Seigel (1985)
Simulation of El Niño of 1982–1983Elsevier oceanography series, 40
N. Baturin, P. Niiler (1997)
Effects of instability waves in the mixed layer of the equatorial PacificJournal of Geophysical Research, 102
(1997)
ERA descripton
M. Mcphaden, Xuri Yu (1999)
Equatorial waves and the 1997–98 El NiñoGeophysical Research Letters, 26
J. Boulanger, C. Menkes (1999)
Long equatorial wave reflection in the Pacific Ocean from TOPEX/POSEIDON data during the 1992–1998 periodClimate Dynamics, 15
(1992)
Equatorial dynamics in a 2.5-layer
M. Mccarty, M. Mcphaden (1993)
Mean seasonal cycles and interannual variations at 0⁰, 165⁰E during 1986-1992
In this study, the processes affecting sea surface temperature variability over the 1992––98 period, encompassing the very strong 1997––98 El Niño event, are analyzed. A tropical Pacific Ocean general circulation model, forced by a combination of weekly ERS1––2 and TAO wind stresses, and climatological heat and freshwater fluxes, is first validated against observations. The model reproduces the main features of the tropical Pacific mean state, despite a weaker than observed thermal stratification, a 0.1 m s −−1 too strong (weak) South Equatorial Current (North Equatorial Countercurrent), and a slight underestimate of the Equatorial Undercurrent. Good agreement is found between the model dynamic height and TOPEX/Poseidon sea level variability, with correlation/rms differences of 0.80/4.7 cm on average in the 10°°N––10°°S band. The model sea surface temperature variability is a bit weak, but reproduces the main features of interannual variability during the 1992––98 period. The model compares well with the TAO current variability at the equator, with correlation/rms differences of 0.81/0.23 m s −−1 for surface currents. The model therefore reproduces well the observed interannual variability, with wind stress as the only interannually varying forcing. This good agreement with observations provides confidence in the comprehensive three-dimensional circulation and thermal structure of the model. A close examination of mixed layer heat balance is thus undertaken, contrasting the mean seasonal cycle of the 1993––96 period and the 1997––98 El Niño. In the eastern Pacific, cooling by exchanges with the subsurface (vertical advection, mixing, and entrainment), the atmospheric forcing, and the eddies (mainly the tropical instability waves) are the three main contributors to the heat budget. In the central––western Pacific, the zonal advection by low-frequency currents becomes the main contributor. Westerly wind bursts (in December 1996 and March and June 1997) were found to play a decisive role in the onset of the 1997––98 El Niño. They contributed to the early warming in the eastern Pacific because the downwelling Kelvin waves that they excited diminished subsurface cooling there. But it is mainly through eastward advection of the warm pool that they generated temperature anomalies in the central Pacific. The end of El Niño can be linked to the large-scale easterly anomalies that developed in the western Pacific and spread eastward, from the end of 1997 onward. In the far-western Pacific, because of the shallower than normal thermocline, these easterlies cooled the SST by vertical processes. In the central Pacific, easterlies pushed the warm pool back to the west. In the east, they led to a shallower thermocline, which ultimately allowed subsurface cooling to resume and to quickly cool the surface layer.
Journal of Physical Oceanography – American Meteorological Society
Published: Jan 3, 2000
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