منابع مشابه
A consistent poleward shift of the storm tracks in simulations of 21st century climate
[1] A consistent poleward and upward shift and intensification of the storm tracks is found in an ensemble of 21st century climate simulations performed by 15 coupled climate models. The shift of the storm tracks is accompanied by a poleward shift and upward expansion of the midlatitude baroclinic regions associated with enhanced warming in the tropical upper troposphere and increased tropopaus...
متن کاملDynamics of Barotropic Storm Tracks
Longitudinal variations in the upper-tropospheric time-mean flow strongly modulate the structure and amplitude of upper-tropospheric eddies. This barotropic modulation is studied using simple models of wave propagation through zonally varying basic states that consist of contours separating regions of uniform barotropic potential vorticity. Such basic states represent in a simple manner the pot...
متن کاملDownstream Self-Destruction of Storm Tracks
The Northern Hemisphere storm tracks have maximum intensity over the Pacific and Atlantic basins; their intensity is reduced over the continents downstream. Here, simulations with an idealized aquaplanet general circulation model are used to demonstrate that even without continents, storm tracks have a self-determined longitudinal length scale. Their length is controlled primarily by the planet...
متن کاملA Linear Stochastic Model of a GCM’s Midlatitude Storm Tracks
A linear stochastic model is used to simulate the midlatitude storm tracks produced by an atmospheric GCM. A series of six perpetual insolation/SST GCM experiments are first performed for each month. These experiments capture the ‘‘midwinter suppression’’ of the Pacific storm track in a particularly clean way. The stochastic model is constructed by linearizing the GCM about its January climatol...
متن کاملClimatology of Cyclones, Anticyclones and Storm Tracks: Revision of Concepts
This paper has the finality of describe climatology of extratropical cyclones, anticyclones and storm tracks for the NH and SH. There is a long history of studies on the characteristics of synoptic systems, beginning with classical work on mid-latitude cyclones. For the SH, analyses of pressure data provide extensive statistics of the climatology of synoptic systems. Interestingly, the anticycl...
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ژورنال
عنوان ژورنال: Journal of the Atmospheric Sciences
سال: 1998
ISSN: 0022-4928,1520-0469
DOI: 10.1175/1520-0469(1998)055<2577:pdost>2.0.co;2