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How Do Friction and Pressure Torques Affect the Relative and Ω Angular Momenta of the Atmosphere?
Publisher: American Meteorological Society
Abstract: The axial Ω and relative angular momenta, MΩ and Mr, depend on the meridional mass distribution and relative zonal velocity, respectively. According to the conventional formulation, the time rate of change of MΩ is determined ...
Toward Climate Prediction: Interannual Potential Predictability due to an Increase in CO2 Concentration as Diagnosed from an Ensemble of AO GCM Integrations
Publisher: American Meteorological Society
Abstract: Predictability studies of the second kind are often carried out to address the potential in predicting atmospheric variables based on knowledge of changes in sea surface temperature (SST). Here a predictability study of ...
On the Relationship between the Stratospheric Quasi-biennial Oscillation and the Tropospheric Southern Oscillation
Publisher: American Meteorological Society
Abstract: Two quasi-periodic oscillations in the tropical atmosphere with similar oscillation period?the stratospheric quasi-biennial and the Southern oscillations?and the relationship between these two oscillations are examined ...
The Joint Modes of the Coupled Atmosphere-Ocean System Observed from 1967 to 1986
Publisher: American Meteorological Society
Abstract: Two aspects of the principal oscillation pattern (POP) analysis are used to study the large-scale modes of the coupled atmosphere?ocean system. First, P0Ps can be considered as the normal modes of the system; one way of ...
Signatures of Air–Sea Interactions in a Coupled Atmosphere–Ocean GCM
Publisher: American Meteorological Society
Abstract: Various types of air?sea interactions are studied based on the general properties of cross-covariance function and the well-defined shapes of these functions obtained from conceptual models. The analysis is applied to sea ...
What Determines the Spectrum of a Climate Variable at Zero Frequency?
Publisher: American Meteorological Society
Abstract: In order to understand the spectrum Γx(?) of a climate variable xt, the relation between Γx(?) and its forcing has to be considered. If the evolution of xt over (discretized) time is determined by ft, that is, ?x/?t ≡ (xt ...
Angular Momenta of the Antarctic and the Arctic Oscillations
Publisher: American Meteorological Society
Abstract: The angular momentum anomalies associated with the Antarctic and Arctic Oscillations are examined in a coupled general circulation model. The size of the global-mean anomaly of the Ω angular momentum is unexpectedly larger ...
Mem-Spring Models Combined with Hybrid Dynamical System Approach to Represent Material Behavior
Publisher: American Society of Civil Engineers
Abstract: Material stress-strain behaviors and system load-displacement responses characterized with the origin-crossing input-ouput feature under repetitive loading and unloading conditions can be modeled efficiently by mem-spring ...
The Reddest Atmospheric Modes and the Forcings of the Spectra of These Modes
Publisher: American Meteorological Society
Abstract: The reddest atmospheric modes are studied using a 500-yr integration performed with the coupled ECHAM1/LSG general circulation model. By fitting a first-order autoregressive process to the considered time series, a simple ...
Linking Nonlinear System Identification with Nonlinear Dynamic Simulation under OpenSees: Some Justifications and Implementations
Publisher: American Society of Civil Engineers
Abstract: This study seeks to bridge the gap between nonlinear system identification and nonlinear dynamic finite-element analysis. Motivated by the needs in earthquake simulation, it is first investigated under which conditions and ...
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