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Atmospheric Energy Cycle Viewed from Wave–Mean-Flow Interaction and Lagrangian Mean Circulation
Publisher: American Meteorological Society
Abstract: A formulation is proposed to analyze energetics of the global atmosphere. To see effects of wave?mean-flow interaction and Lagrangian mean meridional circulation from nonlinear and nongeostrophic senses, rate equations of ...
How Does the Vertical Profile of Baroclinicity Affect the Wave Instability?
Publisher: American Meteorological Society
Abstract: he growth rate of baroclinic instability waves is generalized in terms of wave?mean flow interactions, with an emphasis on the influence of the vertical profile of baroclinicity. The wave energy is converted from the zonal ...
A Cascade-Type Global Energy Conversion Diagram Based on Wave–Mean Flow Interactions
Publisher: American Meteorological Society
Abstract: A cascade-type energy conversion diagram is proposed for the purpose of diagnosing the atmospheric general circulation based on wave?mean flow interactions. Mass-weighted isentropic zonal means facilitate the expression ...
On the Analysis of Mean Downward Velocities around the Antarctic Polar Vortex
Publisher: American Meteorological Society
Abstract: The Lagrangian characteristics of vertical motions around the Antarctic polar vortex are investigated using a general circulation model (GCM) and various analysis methods. A trace analysis that estimated the vertical ...
Influence of the SST Rise on Baroclinic Instability Wave Activity under an Aquaplanet Condition
Publisher: American Meteorological Society
Abstract: The influence of the sea surface temperature (SST) rise on extratropical baroclinic instability wave activity is investigated using an aquaplanet general circulation model (GCM). Two types of runs were performed: the High+3 ...
Impacts of Evaporation from Raindrops on Tropical Cyclones. Part II: Features of Rainbands and Asymmetric Structure
Publisher: American Meteorological Society
Abstract: In this study, the impacts of evaporative cooling from raindrops on a tropical cyclone (TC) are examined using cloud-resolving simulations under an idealized condition. Part I of this study showed that evaporative cooling ...
Impacts of Evaporation from Raindrops on Tropical Cyclones. Part I: Evolution and Axisymmetric Structure
Publisher: American Meteorological Society
Abstract: Cloud-resolving simulations of an ideal tropical cyclone (TC) on an f plane are performed to investigate the effects of evaporative cooling on the evolution and structure of a TC. Evaporative cooling has markedly different ...
The Gradient Genesis of Stratospheric Trace Species in the Subtropics and around the Polar Vortex
Publisher: American Meteorological Society
Abstract: Mechanisms that control the formation and decay of meridional gradients in stratospheric trace species in the subtropics and around the polar vortex are investigated using a gradient genesis equation that uses mass-weighted ...
Diagnosis of Meridional Ozone Transport Based on Mass-Weighted Isentropic Zonal Means
Publisher: American Meteorological Society
Abstract: A transport equation based on mass-weighted isentropic zonal means applies to the diagnosis for the meridional ozone transport in the troposphere and stratosphere. The mean and eddy ozone fluxes are estimated from the ...
Three-Dimensional Structure of Mass-Weighted Isentropic Time-Mean Meridional Circulations
Publisher: American Meteorological Society
Abstract: AbstractThe present study develops a diagnostic framework for investigating the three-dimensional (3D) structure of mass-weighted isentropic time-mean (T-MIM) meridional circulations and conducts a preliminary analysis of ...