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RISOrographic Influences on Subtropical Stratocumulus
Publisher: American Meteorological Society
Abstract: The impact of South American orography on subtropical stratocumulus clouds off the Peruvian coast is investigated in the context of an atmospheric general circulation model. It is found that stratocumulus incidence is ...
The Behavior of Wave 2 in the Southern Hemisphere Stratosphere during Late Winter and Early Spring
Publisher: American Meteorological Society
Abstract: A detailed analysis is presented of the behavior of the zonal wavenumber 2 component of the flow (wave 2) for July through October in the Southern Hemisphere stratosphere. Wave 2 in the stratosphere is characterized by a ...
Simulations of the February 1979 Stratospheric Sudden Warming: Model Comparisons and Three-Dimensional Evolution
Publisher: American Meteorological Society
Abstract: The evolution of the stratospheric flow during the major stratospheric sudden warming of February 1979 is studied using two primitive equation models of the stratosphere and mesosphere. The United Kingdom Meteorological ...
Parameterization of Cloud–Radiation Processes in the UCLA General Circulation Model
Publisher: American Meteorological Society
Abstract: A contemporary radiation parameterization scheme has been implemented in the University of California, Los Angeles (UCLA), atmospheric GCM (AGCM). This scheme is a combination of the delta-four-stream method for solar flux ...
Planetary-Scale Waves in the Southern Hemisphere Winter and Early Spring Stratosphere: Stability Analysis
Publisher: American Meteorological Society
Abstract: Eastward-traveling waves 2 and 3 are frequently observed to grow in the Southern Hemisphere stratosphere during late winter and early spring. Observations show times when wave 2 growth appears to be confined to the ...
Observations of an Inertial Peak in the Intrinsic Wind Spectrum Shifted by Rotation in the Antarctic Vortex
Publisher: American Meteorological Society
Abstract: pectral analyses of time series of zonal winds derived from locations of balloons drifting in the Southern Hemisphere polar vortex during the Vorcore campaign of the Stratéole program reveal a peak with a frequency near ...
Simulation of the Tropical Pacific Climate with a Coupled Ocean-Atmosphere General Circulation Model. Part II: Interannual Variability
Publisher: American Meteorological Society
Abstract: Two multiyear simulations with a coupled ocean-atmosphere general circulation model (GCM)-totaling 45 years-are used to investigate interannual variability at the equator. The model consists of the UCLA global atmospheric ...
The Impact of Stratocumulus Cloud Radiative Properties on Surface Heat Fluxes Simulated with a General Circulation Model
Publisher: American Meteorological Society
Abstract: When sea surface temperatures are prescribed at its lower boundary, the University of California, Los Angeles (UCLA) atmospheric general circulation model (AGCM) produces a realistic simulation of planetary boundary layer ...
Impacts of the Tropical Pacific/Indian Oceans on the Seasonal Cycle of the West African Monsoon
Publisher: American Meteorological Society
Abstract: he current consensus is that drought has developed in the Sahel during the second half of the twentieth century as a result of remote effects of oceanic anomalies amplified by local land?atmosphere interactions. This paper ...
Mechanisms for Precipitation Variability of the Eastern Brazil/SACZ Convective Margin
Publisher: American Meteorological Society
Abstract: he present study examines the mechanisms for the connection between the precipitation variability in eastern Brazil and the South Atlantic convergence zone (SACZ) convective margin (eastern Brazil/SACZ convective margin) ...