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RISSensitivity of Dynamical Quantities to Horizontal Resolution for a Climate Simulation Using the ECMWF (Cycle 33) Model
Publisher: American Meteorological Society
Abstract: The European Centre for Medium-Range Weather Forecasts (ECMWF) model (cycle 33) was integrated for a full seasonal cycle at four horizontal resolutions, T21, T42, T63, and T106. Within the limits imposed by the varying ...
The Northern Wintertime Divergence Extrema at 200 hPa and MSLP Cyclones as Simulated in the AMIP Integration by the ECMWF General Circulation Model
Publisher: American Meteorological Society
Abstract: Divergence and convergence centers at 200 hPa and mean sea level pressure (MSLP) cyclones are located every 6 hours for a 10-year GCM simulation for the boreal winters from 1980 to 1988. The simulation used the observed ...
Intercomparison of Interannual Variability of the Global 200-hPa Circulation for AMIP Simulations
Publisher: American Meteorological Society
Abstract: The 200-hPa divergence and streamfunction from the 30 models of the Atmospheric Model Intercomparison Project (AMIP) are compared. The data used are in the form of monthly averages and are filtered to a spatial resolution ...
Autocorrelations of Moisture Parameters on Isentropic Surfaces
Publisher: American Meteorological Society
Abstract: Arguments are put forth supporting the contention that the analysis of specific humidity on isentropic surfaces should be considered as the optimum method for the analysis of atmospheric moisture. Autocorrelation curves ...
Comparison of the Synoptic Conditions in Midlatitudes Accompanying Cold Surges over Eastern Asia for the Months of December 1974 and 1978. Part II: Relation of Surge Events to Features of the Longer Term Mean Circulation
Publisher: American Meteorological Society
Abstract: This is the second of two papers dealing with midlatitude initiation of East Asian cold surges. The effects of individual cold surges on the circulation an the East Asian coast are studied for the months of December 1974 ...
Comparison of the Synoptic Conditions in Midlatitudes Accompanying Cold Surges over Eastern Asia for the Months of December 1974 and 1978. Part I: Monthly Mean Fields and Individual Events
Publisher: American Meteorological Society
Abstract: East Asian cold surges during two periods of contrasting intensity, December 1974 (strong) and December 1978 (weak), are studied. It is shown that the midlatitude mechanisms initiating cold surges during both months are ...
Evaluation of the Annual Cycle of Precipitation over the United States in GCMs: AMIP Simulations
Publisher: American Meteorological Society
Abstract: The monthly mean precipitation patterns of the Atmospheric Model Intercomparison Project decadal simulations over the United States and adjoining oceans are intercompared. A simple harmonic analysis of the 12-month seasonal ...
Using Common Principal Components for Comparing GCM Simulations
Publisher: American Meteorological Society
Abstract: The technique of common principal components (CPC) is applied to compare the results of a number of GCM simulations. The data used are the 120 monthly mean fields from 30 Atmospheric Model Intercomparison Project (AMIP) ...
A Cyclone/Anticyclone Couplet over North America: An Example of Anticyclone Evolution
Publisher: American Meteorological Society
Abstract: A detailed case study has been made of a cyclone/anticyclone couplet over North America during early winter, 11?18 November 1969. The anticyclone was the dominant member of the couplet in this case. Objective analyses of ...
Cyclone–Anticyclone Couplets over North America. Part II: Analysis of a Major Cyclone Event over the Eastern United States
Publisher: American Meteorological Society
Abstract: The evolution of a major cyclone over Eastern North America in March 1971 is described. A noteworthy feature of the development, in addition to the extreme baroclinity, was the substantial thermal advection upward from the ...