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RISOn the Role of Planetary-Scale Waves in the Abrupt Seasonal Transition of the Northern Hemisphere General Circulation
Publisher: American Meteorological Society
Abstract: he role of planetary-scale waves in the abrupt seasonal transition of the Northern Hemisphere (NH) general circulation is studied. In reanalysis data, the winter-to-summer transition involves the growth of planetary-scale ...
Using the moist static energy budget to understand storm track shifts across a range of timescales
Publisher: American Meteorological Society
Abstract: torm tracks shift meridionally in response to forcing across a range of timescales. Here we formulate a moist static energy (MSE) framework for storm track position and use it to understand storm track shifts in response ...
Connecting the Energy and Momentum Flux Response to Climate Change Using the Eliassen–Palm Relation
Publisher: American Meteorological Society
Abstract: AbstractCoupled climate models project that extratropical storm tracks and eddy-driven jets generally shift poleward in response to increased CO2 concentration. Here the connection between the storm-track and jet responses ...
The Impact of Stratospheric Model Configuration on Planetary-Scale Waves in Northern Hemisphere Winter
Publisher: American Meteorological Society
Abstract: The impact of stratospheric model configuration on modeled planetary-scale waves in Northern Hemisphere winter is examined using the Canadian Middle Atmosphere Model (CMAM). The CMAM configurations include a high-lid (0.001 ...
On the Control of the Residual Circulation and Stratospheric Temperatures in the Arctic by Planetary Wave Coupling
Publisher: American Meteorological Society
Abstract: t is well established that interannual variability of eddy (meridional) heat flux near the tropopause controls the variability of Arctic lower-stratospheric temperatures during spring via a modification of the strength of ...
The Life Cycle of Northern Hemisphere Downward Wave Coupling between the Stratosphere and Troposphere
Publisher: American Meteorological Society
Abstract: he life cycle of Northern Hemisphere downward wave coupling between the stratosphere and troposphere via wave reflection is analyzed. Downward wave coupling events are defined by extreme negative values of a wave coupling ...
Tropical and Subtropical Meridional Latent Heat Transports by Disturbances to the Zonal Mean and Their Role in the General Circulation
Publisher: American Meteorological Society
Abstract: he spectrum of meridional latent heat transport in the tropics and subtropics by disturbances to the zonal mean during all seasons is analyzed. The transport is divided into stationary and transient planetary- and ...
Comments on “A Spectral Parameterization of Drag, Eddy Diffusion, and Wave Heating for a Three-Dimensional Flow Induced by Breaking Gravity Waves”
Publisher: American Meteorological Society
Dynamics of Extreme Stratospheric Negative Heat Flux Events in an Idealized Model
Publisher: American Meteorological Society
Abstract: AbstractRecent work has shown that extreme stratospheric wave-1 negative heat flux events couple with the troposphere via an anomalous wave-1 signal. Here, a dry dynamical core model is used to investigate the dynamical ...
Downward Wave Coupling between the Stratosphere and Troposphere: The Importance of Meridional Wave Guiding and Comparison with Zonal-Mean Coupling
Publisher: American Meteorological Society
Abstract: The nature of downward wave coupling between the stratosphere and troposphere in both hemispheres is analyzed using the 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) dataset. Downward ...