Search
CSV
RISFriction Torque Dynamics Associated with Intraseasonal Length-of-Day Variability
Publisher: American Meteorological Society
Abstract: This investigation examines the dynamical processes that drive the anomalous friction torque associated with intraseasonal length-of-day fluctuations. Diagnostic analyses with National Centers for Environmental Protection?National ...
Nonlinear Instability of a Forced Baroclinic Rossby Wave
Publisher: American Meteorological Society
Abstract: Two-layer, quasi-geostrophic weakly nonlinear and low-order spectral models are developed and used to investigate the instability of forced baroclinic Rossby waves to finite-amplitude perturbations. The results are then ...
Wave-Mean Flow Interaction during the Life Cycles of Baroclinic Waves
Publisher: American Meteorological Society
Abstract: A two-layer quasigeostrophic ?-plane channel model is used to examine the role of the wave-mean flow interaction during the life cycles of baroclinic waves. Two cases are examined: a wide and a narrow jet limit. These two ...
A Weakly Nonlinear Primitive Equation Baroclinic Life Cycle
Publisher: American Meteorological Society
Abstract: A weakly nonlinear baroclinic life cycle is examined with a spherical, multilevel, primitive equation model. The structure of the initial zonal jet is chosen so that the disturbance grows very slowly, that is, linear growth ...
A Comparison of the Weakly Nonlinear Instability of Westerly and Easterly Jets in a Two-Layer Beta-Plane Model
Publisher: American Meteorological Society
Abstract: The nonlinear evolution of disturbances that emanate from unstable westerly and easterly jet profiles is examined with a two-layer quasi-geostrophic ?-plane channel model. Significant differences arise between the solutions ...
The Atmospheric Dynamics of Intraseasonal Length-of-Day Fluctuations during the Austral Winter
Publisher: American Meteorological Society
Abstract: The atmospheric dynamical processes associated with intraseasonal length-of-day (LOD) variability during the austral winter are examined with National Centers for Environmental Prediction?National Center for Atmospheric ...
Dynamical Processes of Equatorial Atmospheric Angular Momentum
Publisher: American Meteorological Society
Abstract: The dynamical processes that drive intraseasonal equatorial atmospheric angular momentum (EAAM) fluctuations are examined with the National Centers for Environmental Prediction?National Center for Atmospheric Research ...
The Recent Trend and Variance Increase of the Annular Mode
Publisher: American Meteorological Society
Abstract: This study examines whether both the trend and the increase in variance of the Northern Hemisphere winter annular mode during the past 30 years arise from atmospheric internal variability. To address this question, a ...
Is Interannual Zonal Mean Flow Variability Simply Climate Noise?
Publisher: American Meteorological Society
Abstract: This study uses National Centers for Environmental Prediction?National Center for Atmospheric Research reanalysis data to investigate the extent to which interannual zonal index (ZI) fluctuations occur in the atmosphere ...
The Dynamics Associated with Equatorial Atmospheric Angular Momentum in an Aquaplanet GCM
Publisher: American Meteorological Society
Abstract: The dynamical processes that drive intraseasonal equatorial atmospheric angular momentum (EAAM) fluctuations in a 4000-day aquaplanet GCM run are examined. The all-ocean lower boundary has a sea surface temperature field ...