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RISCritical Roles of the Stratiform Rainfall in Sustaining the Madden–Julian Oscillation: GCM Experiments
Publisher: American Meteorological Society
Abstract: This study assesses the impact of stratiform rainfall (i.e., large-scale rainfall) in the development and maintenance of the Madden?Julian oscillation (MJO) in a contemporary general circulation model: ECHAM4 AGCM and its ...
The Boreal-Summer Intraseasonal Oscillations Simulated in a Hybrid Coupled Atmosphere–Ocean Model
Publisher: American Meteorological Society
Abstract: The boreal-summer intraseasonal oscillation (BSISO) simulated by an atmosphere?ocean coupled model is validated with the long-term observations [Climate Prediction Center (CPC) Merged Analysis of Precipitation (CMAP) ...
Influences of Continental Monsoons and Air–Sea Coupling on the Climate of the Equatorial Pacific
Publisher: American Meteorological Society
Abstract: An air?sea?land coupled model of intermediate complexity was used to reveal the important roles of air?sea coupling and adjacent continental monsoons (i.e., American monsoons and Asian?Australian monsoons) on the annual ...
Differences of Boreal Summer Intraseasonal Oscillations Simulated in an Atmosphere–Ocean Coupled Model and an Atmosphere-Only Model
Publisher: American Meteorological Society
Abstract: A series of small-perturbation experiments has been conducted to demonstrate that an atmosphere?ocean coupled model and an atmosphere-only model produce significantly different intensities of boreal summer intraseasonal ...
The Role of Longwave Radiation and Boundary Layer Thermodynamics in Forcing Tropical Surface Winds
Publisher: American Meteorological Society
Abstract: This paper reveals major deficiencies of the existing intermediate climate models for tropical surface winds and elaborates the important roles of cloud-longwave radiational forcing and boundary layer thermodynamics in ...
A Coupled Modeling Study of the Seasonal Cycle of the Pacific Cold Tongue. Part I: Simulation and Sensitivity Experiments
Publisher: American Meteorological Society
Abstract: A coupled tropical ocean?atmosphere model that fills the gap between anomalous coupled models and fully coupled general circulation models is described. Both the atmosphere and ocean are represented by two and one-half ...
Processes Determining the Rapid Reestablishment of the Equatorial Pacific Cold Tongue/ITCZ Complex
Publisher: American Meteorological Society
Abstract: The annual reestablishment of the equatorial cold tongue (ECT) in the Pacific is signified by a remarkably rapid reversal of the warming trend from March to May. The processes responsible for this dramatic turnabout are ...
Simulation of the Intraseasonal Oscillation in the ECHAM-4 Model: The Impact of Coupling with an Ocean Model
Publisher: American Meteorological Society
Abstract: Three 15-yr integrations were made with the ECHAM-4 atmospheric GCM (AGCM); in the first integration, the model lower boundary conditions were the observed monthly mean sea surface temperatures, and, in the second, the ...
Pacific–East Asian Teleconnection: How Does ENSO Affect East Asian Climate?
Publisher: American Meteorological Society
Abstract: Observational evidence is presented to show a teleconnection between the central Pacific and East Asia during the extreme phases of ENSO cycles. This Pacific?East Asian teleconnection is confined to the lower troposphere. ...
Impacts of Air–Sea Coupling on the Simulation of Mean Asian Summer Monsoon in the ECHAM4 Model
Publisher: American Meteorological Society
Abstract: Atmosphere?ocean coupling was found to play a critical role in simulating the mean Asian summer monsoon and its climatological intraseasonal oscillation (CISO) in comparisons of the results from a stand-alone ECHAM4 ...