scholarly journals On the role of the GRACE mission in the joint assimilation of altimetric and TAO data in a tropical Pacific Ocean model

2006 ◽  
Vol 33 (14) ◽  
Author(s):  
F. Castruccio ◽  
J. Verron ◽  
L. Gourdeau ◽  
J. M. Brankart ◽  
P. Brasseur
Keyword(s):  
Pacific Ocean ◽  
Ocean Model ◽  
Tropical Pacific ◽  
Tropical Pacific Ocean ◽  
Grace Mission

A Comparison of Adaptive Kalman Filters for a Tropical Pacific Ocean Model

1997 ◽  
Vol 125 (1) ◽  
pp. 40-58 ◽  
Author(s):  
Isabelle Blanchet* ◽  
Claude Frankignoul ◽  
Mark A. Cane
Keyword(s):  
Pacific Ocean ◽  
Kalman Filters ◽  
Ocean Model ◽  
Tropical Pacific ◽  
Tropical Pacific Ocean

Variability of the upper tropical Pacific Ocean model

1988 ◽  
Vol 93 (C11) ◽  
pp. 13930 ◽  
Author(s):  
Masahisa Kubota ◽  
James J. O'Brien
Keyword(s):  
Pacific Ocean ◽  
Ocean Model ◽  
Tropical Pacific ◽  
Tropical Pacific Ocean

Tropical-ocean-atmosphere interactions in a coupled model

1989 ◽  
Vol 329 (1604) ◽  
pp. 207-223 ◽  
Keyword(s):  
Pacific Ocean ◽  
General Circulation ◽  
Southern Oscillation ◽  
Heat Budget ◽  
Circulation Model ◽  
Ocean Model ◽  
Tropical Pacific ◽  
Sea Surface ◽  
Tropical Pacific Ocean ◽  
Tropical Ocean

A high-resolution tropical Pacific Ocean model coupled to a medium-resolution atmospheric general circulation model has been integrated for 2 years. A seasonal cycle was included. The atmospheric model when forced with climatological seasonally varying sea surface temperatures simulates the surface stress and net surface heating over the tropical Pacific Ocean to within the uncertainty in the climatological estimates in these quantities. When coupled, however, the models drift into an annually recurring anomalous state, similar in many respects to the El Nino Southern Oscillation observed in the ocean and atmosphere. The model results emphasize the role of off-equatorial anomalies in temperature, atmospheric heating and wind response. Air—sea heat exchange is found to be dominant in determining sea surface temperature changes in these off-equatorial regions. Both cloud and evaporative feedbacks are important in the anomalous surface heat budget.

Tropical Pacific Ocean and the Madden-Julian Oscillation: Role of wind and buoyancy forcing

2010 ◽  
Vol 115 (C5) ◽  
Author(s):  
Xu Zhang ◽  
Youyu Lu ◽  
Keith R. Thompson ◽  
Jing Jiang ◽  
Hal Ritchie
Keyword(s):  
Pacific Ocean ◽  
Tropical Pacific ◽  
Madden Julian Oscillation ◽  
Tropical Pacific Ocean ◽  
Buoyancy Forcing

scholarly journals The riddle of eastern tropical Pacific Ocean oxygen levels: the role of the supply by intermediate-depth waters

Ocean Science ◽  
2021 ◽  
Vol 17 (5) ◽  
pp. 1489-1507
Author(s):  
Olaf Duteil ◽  
Ivy Frenger ◽  
Julia Getzlaff
Keyword(s):  
Pacific Ocean ◽  
Climate Models ◽  
Current System ◽  
Tropical Pacific ◽  
Tropical Region ◽  
Tropical Pacific Ocean ◽  
Eastern Tropical Pacific ◽  
Intermediate Depth ◽  
Oxygen Levels

Abstract. Observed oxygen minimum zones (OMZs) in the tropical Pacific Ocean are located above intermediate-depth waters (IDWs), defined here as the 500–1500 m water layer. Typical climate models do not represent IDW properties well and are characterized by OMZs that are too deep-reaching. We analyze the role of the IDW in the misrepresentation of oxygen levels in a heterogeneous subset of ocean models characterized by a horizontal resolution ranging from 0.1 to 2.8∘. First, we show that forcing the extratropical boundaries (30∘ S and N) to observed oxygen values results in a significant increase in oxygen levels in the intermediate eastern tropical region. Second, we highlight the fact that the Equatorial Intermediate Current System (EICS) is a key feature connecting the western and eastern part of the basin. Typical climate models lack in representing crucial aspects of this supply at intermediate depth, as the EICS is basically absent in models characterized by a resolution lower than 0.25∘. These two aspects add up to a “cascade of biases” that hampers the correct representation of oxygen levels at intermediate depth in the eastern tropical Pacific Ocean and potentially future OMZ projections.

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