Abstract: A linear nine-level primitive equation model is used to determine whether the nonuniform geographical distribution of low-frequency variability and the underlying structure of low-frequency patterns can be attributed to ...

Abstract: A linear budget is used to ascertain which of several proposed processes are most important in maintaining four prominent low-frequency perturbation patterns in a perpetual January general circulation model simulation with ...

Abstract: From previous studies it is known that anomalous momentum fluxes by bandpass eddies are important in maintaining long-lasting tropospheric flow anomalies. Evidence is presented that suggests that these anomalous fluxes do ...

Abstract: Conventional and complex empirical orthogonal function (EOF) techniques show that for at least four months during the fall and winter of 1979/80 a large-amplitude, large-scale, traveling flow anomaly existed in the troposphere ...

Abstract: he midlatitude response to localized equatorial heating events that last 2 days is examined through experimentation with an atmospheric general circulation model. Such responses are argued to be important because many ...

Abstract: The degree to which quasi-stationary midtropospheric flow is consistent with linear, potential vorticity conservation is investigated. The linear theory suggests there should be a well defined relationship between the zonal ...

Abstract: Experiments are presented which indicate that many features of the response of a general circulation model to sea-surface temperature anomalies in the equatorial Pacific east of the dateline can be reproduced with a linear ...

Abstract: An eigenanalysis of the barotropic vorticity equation linearized about 300 mb climatological flow from a general circulation model (the NCAR CCM) control simulation is described. The goal is to determine if the known ...

Abstract: The variability in skill of NMC 72-h 500 mb forecasts during recent winter is examined. Root-mean-square error, anomaly correlation, and the Fisher z-transformation of the anomaly correlation are used as measures of skill. ...

Abstract: To investigate how the propagation of energy away from steady sources may be influenced by the horizontal structure of the time-averaged flow in the troposphere, solutions to a barotropic model are displayed and interpreted. ...