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RISAir–Sea Interactions of Relevance to the ITCZ: Analysis of Coupled Instabilities and Experiments in a Hybrid Coupled GCM
Publisher: American Meteorological Society
Abstract: The eastern Pacific and Atlantic have a curious climatic asymmetry relative to the equator. Whereas the intertropical convergence zone (ITCZ) characterized by persistent and heavy rainfall and the warmest surface waters ...
Phase Transition of the El Niño–Southern Oscillation: A Stationary SST Mode
Publisher: American Meteorological Society
Abstract: A stationary SST mode is proposed to understand the physical mechanisms responsible for the phase transition of the El Niño?Southern Oscillation. This stationary SST mode differs from the original delayed oscillator mode ...
A Simple Tropical Atmosphere Model of Relevance to Short-Term Climate Variations
Publisher: American Meteorological Society
Abstract: The tropical atmosphere model presented here is suitable for modeling both the annual cycle and short-term (monthly to decadal time scale) climate fluctuations in sole response to the thermal forcing from the underlying ...
A Thermodynamic Equilibrium Climate Model for Monthly Mean Surface Winds and Precipitation over the Tropical Pacific
Publisher: American Meteorological Society
Abstract: Diagnosis of the dynamic and thermodynamic balances using observed climatological monthly mean data reveals that 1) anisotropic, latitude-dependent Rayleigh friction coefficients lead to much improved modeling of the monthly ...
The Influence of Sea Surface Temperature on the Tropical Intraseasonal Oscillation: A Numerical Study
Publisher: American Meteorological Society
Abstract: The development and movement of the tropical intraseasonal system (TIS) exhibit remarkable annual variations. It was hypothesized that spatial and temporal variation in sea surface temperature (SST) is one of the primary ...
Convective Interaction with Boundary-Layer Dynamics in the Development of a Tropical Intraseasonal System
Publisher: American Meteorological Society
Abstract: Tropical boundary-layer flows interact with the free tropospheric circulation and underlying sea surface temperature, playing a critical role in coupling collective effects of cumulus heating with equatorial dynamics. In ...
The Role of the Annual-Mean Climate on Seasonal and Interannual Variability of the Tropical Pacific in a Coupled GCM
Publisher: American Meteorological Society
Abstract: The role of the annual-mean climate on seasonal and interannual variability in the tropical Pacific is investigated by means of a coupled atmosphere?ocean general circulation model. The atmospheric component of this coupled ...
An Intermediate Model of the Tropical Pacific Ocean
Publisher: American Meteorological Society
Abstract: An intermediate tropical Pacific Ocean model is developed to bridge the gap between anomaly models of El Niño and ocean general circulation models. The model contains essential physics for reproducing both the annual and ...
On the Annual Cycle of the Eastern Equatorial Pacific
Publisher: American Meteorological Society
Abstract: Although the sun ?crosses? the equator twice a year, the eastern equatorial Pacific has a pronounced annual cycle, in sea surface temperature and in both components of the surface winds for example. (This is in contrast ...
On the Seasonal Cycle of the Equatorial Atlantic Ocean
Publisher: American Meteorological Society
Abstract: Although the seasonal cycle of the equatorial Atlantic and Pacific Oceans have many similarities, for example, an annual signal is dominant at the equator even though the sun ?crosses? the equator twice a year, different ...