Sentences with phrase «vertical shear»
Vertical shear refers to the force that causes an object to bend or break apart in a vertical direction. It happens when there is a difference in upward and downward forces along a vertical plane, leading to a splitting or tearing effect. Full definition
And since the factors involved in churning up flows of air are the subject of serious academic debate, they had a lot of possibilities to consider and at least 20 different units of measurement to factor into their models — technicalities like the magnitude of vertical shear of horizontal wind, flow deformation and simple wind speed, and highly specialised meteorological considerations such as the negative Richardson number, and the Brown energy dissipation rate.
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Held, I., R. L. Panetta and 1985: Stationary external Rossby waves in vertical shear.
Conversely, due to well - researched upper - atmospheric flow (e.g. vertical shear) configurations favorable to Atlantic hurricane development and intensification, La Nina falls tend to favor very active seasons in the Atlantic (El Nino years are the converse, with must less activity, as forecast by Gray and NOAA for 2009).
The National Hurricane Center noted that the strong vertical shear over Ian is being produced by an upper - level low pressure area located a couple of hundred miles to the west - northwest.
«Warming may increase vertical shear and therefore inhibit storms.
Tropical cyclones in vertical shear: impact of vertical wind shear on structure and intensity; vortex resilience theory
It exited the coast about a day ago, and already has a weak anticyclone positioned over it, greatly reducing the vertical shear and enhancing outflow.
The environment conducive for severe tornadic storms requires many ingredients, not least of which is the vertical shear of the wind in the storms environment, especially in the region near the base of the cloud (Harold can give the specifics).
In gradient - balanced anticyclonic flows, not - frontogenetical enhancement of vertical shear may lead to CAT.
The forecasting of clear - air turbulence (CAT) continues to be a challenging problem despite progress made in the understanding of vertical shear (Kelvin - Helmholtz) instabilities.
For them, the vertical shearing of the horizontal wind in troposphere is the principal factor which prevents the majority of the cyclones from arriving at the intensity that the temperature of the ocean would allow them.
Consequently, the higher frequency of the intense cyclones during the last decade could come from a decline in the vertical shearing of the horizontal wind.