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RISPropagation and Selective Transmission of Internal Gravity Waves in a Sudden Warming
Publisher: American Meteorological Society
Abstract: Longitudinally asymmetric features of gravity wave propagation in a sudden warming are examined theoretically, using observed geostrophic wind fields in the stratosphere for three days of winter 1979. It is shown that the ...
The Area of the Stratospheric Polar Vortex as a Diagnostic for Tracer Transport on an Isentropic Surface
Publisher: American Meteorological Society
Abstract: Data retrieved from the LIMS (Limb lnfrared Monitor of the Stratosphere) experiment are used 10 calculate daily isentropic distributions of Ertel's potential vorticity, ozone, water vapor and nitric acid at the 850 K level ...
Filtering of Parameterized Nonorographic Gravity Waves in the Met Office Unified Model
Publisher: American Meteorological Society
Abstract: This paper investigates the vertical filtering of parameterized gravity wave pseudomomentum flux in the troposphere?stratosphere version of the Met Office Unified Model. Gravity wave forcing is parameterized using the ...
Defining Sudden Stratospheric Warmings
Publisher: American Meteorological Society
Abstract: udden stratospheric warmings (SSWs) are large, rapid temperature rises in the winter polar stratosphere, occurring predominantly in the Northern Hemisphere. Major SSWs are also associated with a reversal of the climatological ...
Stratospheric Variability in Twentieth-Century CMIP5 Simulations of the Met Office Climate Model: High Top versus Low Top
Publisher: American Meteorological Society
Abstract: n examination is made of stratospheric climate, circulation, and variability in configurations of the Hadley Centre Global Environmental Model version 2 (HadGEM2) differing only in stratospheric resolution and the placement ...
The Response of the Stratospheric Climate to Projected Changes in the Concentrations of Well-Mixed Greenhouse Gases from 1992 to 2051
Publisher: American Meteorological Society
Abstract: Results are presented from two 60-yr integrations of the troposphere?stratosphere configuration of the U.K. Met. Office?s Unified Model. The integrations were set up identically, apart from different initial conditions, ...
Using Different Formulations of the Transformed Eulerian Mean Equations and Eliassen–Palm Diagnostics in General Circulation Models
Publisher: American Meteorological Society
Abstract: Transformed Eulerian mean (TEM) equations and Eliassen?Palm (EP) flux diagnostics are presented for the general nonhydrostatic, fully compressible, deep atmosphere formulation of the primitive equations in spherical geometric ...
CORRIGENDUM
Publisher: American Meteorological Society
The Effect of Climate Change on the Variability of the Northern Hemisphere Stratospheric Polar Vortex
Publisher: American Meteorological Society
Abstract: ith extreme variability of the Arctic polar vortex being a key link for stratosphere?troposphere influences, its evolution into the twenty-first century is important for projections of changing surface climate in response ...
Parameterized Gravity Wave Momentum Fluxes from Sources Related to Convection and Large-Scale Precipitation Processes in a Global Atmosphere Model
Publisher: American Meteorological Society
Abstract: nalysis of a high-resolution, convection-permitting simulation of the tropical Indian Ocean has revealed empirical relationships between precipitation and gravity wave vertical momentum flux on grid scales typical of earth ...