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Positive vorticity advection information


Positive vorticity advection, or PVA, is the result of more cyclonic values of vorticity advecting into lower values of vorticity. It is more generally referred to as "Cyclonic Vorticity Advection" (CVA). In the Northern Hemisphere this is positive, whilst in the Southern Hemisphere it is negative.

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Positive vorticity advection

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Positive vorticity advection, or PVA, is the result of more cyclonic values of vorticity advecting into lower values of vorticity. It is more generally...

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Moisture advection

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cycle Positive vorticity advection "Moisture Advection: along the 850 mb surface". ww2010.atmos.uiuc.edu. Retrieved 2019-02-07. Moisture Advection Description...

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Omega equation

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upward motion is produced by positive vorticity advection above the level in question (the first term), plus warm advection (the second term). The derivation...

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PVA

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analysis, a risk-assessment method used in conservation biology Positive vorticity advection in meteorology Potato virus A, an agricultural disease Paralyzed...

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1974 Super Outbreak

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upon real-time satellite imagery and model data, differential positive vorticity advection coincided with the left exit region of an upper-level jet streak...

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Atmospheric convection

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breeze, outflow boundary, or forcing through vorticity dynamics (differential positive vorticity advection) of the atmosphere such as with troughs, both...

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Rossby wave

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the Coriolis force and conservation of potential vorticity which leads to changes of relative vorticity. This is analogous to conservation of angular momentum...

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Rear flank downdraft

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the tornado as a positive feedback loop. Observations of low-level vorticity couplets within RFDs indicate that tilting of vorticity by the RFD is important...

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Glossary of tornado terms

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Vortex stretching VORTEX projects Vorticity Vorticity maximum (vort max) Vorticity minimum Wall cloud Warm air advection (WAA) Warm front Warning Decision...

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Von Neumann stability analysis

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R.; von Neumann, J. (1950), "Numerical Integration of the Barotropic Vorticity Equation", Tellus, 2: 237–254, doi:10.3402/tellusa.v2i4.8607 Smith, G...

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December 2008 North American snowstorms

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coast of southern California, with a distinct area of maximum Positive Vorticity Advection (PVA) at 500 mb having moved inland across the Mojave Desert...

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Topographic Rossby waves

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fluid parcels with one of them having a positive relative vorticity and the other one a negative relative vorticity. This causes a movement of the fluid...

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Lagrangian coherent structure

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Lagrangian-averaged vorticity deviation (LAVD). The LAVD is defined as the trajectory-averaged magnitude of the deviation of the vorticity from its spatial...

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Tropical cyclone

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wind. An additional metric is the radius at which the cyclone's relative vorticity field decreases to 1×10−5 s−1. On Earth, tropical cyclones span a large...

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Mediterranean outflow

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Outflow Water. This is because tidal residual currents contribute to the advection of Mediterranean Outflow Water west from the Gulf of Cádiz, allowing them...

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List of numerical analysis topics

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approximation MUSCL scheme — second-order variant of Godunov's scheme AUSM — advection upstream splitting method Flux limiter — limits spatial derivatives (fluxes)...

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Index of meteorology articles

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meteorological phenomena) A B C D E F G H I J K L M N O P Q R S T U V W X Y Z advection aeroacoustics aerobiology aerography (meteorology) aerology air parcel...

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Glossary of meteorology

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air current moving away from either the North Pole or the South Pole. advection The horizontal transport of some property of the atmosphere or ocean,...

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Pacific Meridional Mode

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increased in the southeastern West Pacific during positive PMM years. This is due mainly to changes in vorticity and remotely forced changes in atmospheric parameters...

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Haida Eddies

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O'Brien, James J. (2001-03-15). "Interannual variability of upper ocean vorticity balances in the Gulf of Alaska". Journal of Geophysical Research: Oceans...

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