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RISPlanetary Waves Kinematically Forced by Himalayan Orography
Publisher: American Meteorological Society
Abstract: An analysis is made of the planetary-scale response of the atmosphere to the kinematic effects of orographic forcing by, in particular, the Tibetan Plateau-Himalayan Mountain complex. Theoretical scaling arguments are used ...
Rotational and Divergent Geopotential Components
Publisher: American Meteorological Society
Abstract: It has been traditional in meteorology to divide the velocity field up into rotational and divergent components, but not the geopotential field. Yet any balance condition, such as the geostrophic relation or linear balance ...
Forced Planetary Waves in the Northern Hemisphere Winter: Wave-Coupled Orographic and Thermal Forcings
Publisher: American Meteorological Society
Abstract: A more complete and new formulation of the orographic forcing and new thermal forcings are included in a steady state model of the Northern Hemisphere planetary waves. When both forcings are included, the simulation produces ...
Orographically Forced Planetary Waves in the Northern Hemisphere Winter: Steady State Model with Wave-Coupled Lower Boundary Formulation
Publisher: American Meteorological Society
Abstract: A planetary wave model has been developed in which the orographic forcing at the lower boundary arising from the kinematically induced vertical motion is due to the total flow impinging on the mountains rather than just ...
Low-Frequency Aspects of the Large-Scale Circulation and West Coast United States Temperature/Precipitation Fluctuations in a Simplified General Circulation Model
Publisher: American Meteorological Society
Abstract: Behavior of regional precipitation and temperature over the West Coast of the United States was examined in a long perpetual winter simulation from a simplified global general circulation model. The model, a simplified ...
Forced Planetary Waves in a Two-Level Model and Evaluation of the Upper Boundary Condition
Publisher: American Meteorological Society
Abstract: Stationary planetary waves forced by orography and diabatic beating are studied using a quasi-geostrophic two-level model on a beta-plane. This study extends a previous one by Trenberth to include the effects of a baroclinic ...
Thermodynamic Mechanisms Responsible for the Tropospheric Response to SST Anomalies in the Antarctic Circumpolar Wave
Publisher: American Meteorological Society
Abstract: Tropospheric temperature and vorticity budgets for the Antarctic Circumpolar Wave (ACW) are diagnosed utilizing the National Centers for Environment Prediction?National Center for Atmospheric Research reanalysis datasets ...
Variability and Predictability in an Empirically Forced Global Model
Publisher: American Meteorological Society
Abstract: Climatological and predictability features of a simplified moist general circulation model are described herein. The simplified model is driven by empirical forcings designed to eliminate systematic errors and maintain ...
ECPC's Weekly to Seasonal Global Forecasts
Publisher: American Meteorological Society
Abstract: The Scripps Experimental Climate Prediction Center (ECPC) has been making experimental, near?real?time seasonal global forecasts since 26 September 1997 with the NCEP global spectral model used for the reanalysis. Images ...