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Supercell storms

Supercell storms

Supercell storms. Storm splitting, environmental conditions, propagation. Ordinary/multicell storm. Browning et al. (1976). Fovell and Tan (1998). Supercell (rotating) storm. Plan view at surface UD = updraft FFD = forward flank downdraft RFD = rear flank downdraft Gust front Hook echo

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972 views • 45 slides
the dynamics of convection 1. Cumulus cloud dynamics

the dynamics of convection 1. Cumulus cloud dynamics

the dynamics of convection 1. Cumulus cloud dynamics. The basic forces affecting a cumulus cloud buoyancy (B) buoyancy-induced pressure perturbation gradient acceleration (BPPGA) dynamic sources of pressure perturbations entrainment : Simple models of entraining cumulus convection (E).

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295 views • 28 slides
Gravity Wave Interactions with the 25 May 2008 Parkersburg, Iowa Supercell

Gravity Wave Interactions with the 25 May 2008 Parkersburg, Iowa Supercell

Gravity Wave Interactions with the 25 May 2008 Parkersburg, Iowa Supercell. 2009 Severe Storms & Doppler Radar Conference. The views expressed are those of the author and do not necessarily represent those of the National Weather Service. Outline Mesoscale/gravity wave environment

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300 views • 20 slides
Pressure Fluctuations Associated with Deep Moist Convection

Pressure Fluctuations Associated with Deep Moist Convection

Pressure Fluctuations Associated with Deep Moist Convection. Introduction. pressure perturbations may arise from density anomalies or from wind speed gradients, and perturbation pressure gradients may, in turn, influence the wind in important ways

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358 views • 18 slides
The three wave modes

The three wave modes

B. 0. k. q. The three wave modes. Remember : phase speed. group velocity. 1 . The Alfven wave. One solution of (20) is. i.e. phase speed. group velocity. Nature of the perturbations :. From (29). and so from (28). and so from (26), (5) and (23). Hence also from (37).

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246 views • 12 slides

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