Potential vorticity
Diabatic Processes and the Generation of the Low Level Potential Vorticity Anomaly of a Rainstorm in Saudi Arabia
... isobaric Potential Vorticity ...Ertel’s Potential Vorticity (EPV) generation esti- mates imply that condensation supplies a large enough source of moisture to account for the presence of the ...
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The Effects of Latent Heating on Cold Frontal Speeds and Accelerations from a Potential Vorticity Perspective
... the potential temperature distribution on the boundaries, can be used to obtain the balanced flow from the invertibility ...field. Potential vorticity inversions for diagnosing winds in cyclone ...
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Inclusion of potential vorticity uncertainties into a hydrometeorological forecasting chain: application to a medium size basin of Mediterranean Spain
... With the purpose of generating the ensemble of perturbed runs, the invertibility principle of Ertel potential vorticity (PV; Hoskins et al., 1985) is applied. In particular, we are interested in studying ...
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MERIDIONAL AND ZONAL WAVENUMBER DEPENDENCE IN POTENTIAL VORTICITY FLUX IN ROSSBY WAVES
... This article has focussed on the streamfunctions as being governed specifically by Rossby wave dynamics, and for the eddy-jet geometry associated with a dominant Rossby wave. However, the methodology outlined here is ...
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African Easterly Waves: Evolution in Potential Vorticity Fields and Interactions with Upper-level Troughs.
... In the first part of our study, we examine the evolution of African Easterly Waves (AEWs) leading to (TCs) in the Atlantic during 2000-2008 from isentropic potential vorticity (PV) and Lagrangian streamline ...
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Moist Potential Vorticity Vector for Diagnosis of Heavy Rainfall Events in Tanzania
... vective vorticity vector ( CVV ) which is defined as a cross product of absolute vorticity and gradient of equivalent potential temperature to moist potential vorticity vector MPVV by ...
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Gradient evolution for potential vorticity flows
... Statements 2, 3, 4 and 5 together give specific instructions on how the potential vorticity field q(x, y, t ) must maintain its topological structure. Topological changes would result, for example, in the ...
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Diagnostic study on the relation between ozone and potential vorticity
... and potential vorticity is plausible because the variation in both these quantities are transport dominated, both have high values in the stratosphere and low values in the ...
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Friction and mixing effects on potential vorticity for bottom current crossing a marine strait: an application to the Sicily Channel (central Mediterranean Sea)
... uniform potential vorticity (PV) and considering channels with rectangular or smooth, idealized cross sections in order to avoid dynamic patholo- gies at the current lateral edges (Lacombe and Richez, 1982; ...
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Piecewise uniform potential vorticity pancake shielded vortices
... of potential vorticity of a given sign surrounded (or shielded) by a layer of opposite-signed potential ...(where potential vorticity is just the vertical component of the ...
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Observations of oceanic potential vorticity and its relationship with other tracers
... locations far from the outcrop where the layer is shielded from the direct influence of the wind. A major difference between this approach and that of RY82 is that the ventilated thermocline model allows significant deep ...
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Shallow water vortex equilibria and their stability
... We first use the quasi-geostrophic shallow-water (QGSW) model to generate steady states. Despite its great simplicity (it is two-dimensional and does not allow gravity waves), it is perhaps the most popular model for the ...
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Exact solutions of the vorticity equation on the sphere as a manifold
... Studies done by Illari (1984) and Crum and Stevens (1988) noted that the values of isentropic potential vorticity are relatively low and uniform in the blocking region. In our following argument we consider ...
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Stability and Vorticity Production in Stratified Astrophysical Disks
... The horizontal component of the potential vorticity is thought to be most important in protoplanetary disks for core accretion modes. In this respect we show that hori- zontal vortices can only be generated ...
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A Semi Lagrangian Type Solver for Two Dimensional Quasi Geostrophic Model on a Sphere
... thod with two-order centered difference scheme for solving two-dimensional quasi- geostrophic equations on a sphere. In our approach, potential vorticity and stream- function are used as prognostic ...
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Trapped vortices in rotating flow
... Trapped vortices in rotating flow 213 The initial distribution of potential vorticity is non-zero only on that k i t e area where the local depth differs from the basic depth H,.. [r] ...
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Nonperturbative Mean-Field Theory for Minimum Enstrophy Relaxation
... minimum potential enstrophy, for given conserved kinetic ...inhomogeneous potential vorticity (PV) mixing is the fundamental mechanism of zonal flow formation, we ask what form must the mean field PV ...
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An implementation of the Local Ensemble Kalman Filter in a quasi geostrophic model and comparison with 3D-Var
... for potential vorticity at midlevel is shown for the LEKF system running with 10, 15, 20, 25, 30 and 40 vectors, using a fixed size of the local domain (l equal to ...
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A Satellite View of the Atmospheric Dry Intrusion and its Influences on the Mid-Latitude Disastrous Weather
... moist potential vorticity, ozone concentration and upper-level ...the potential vorticity calculated by ECMWF Interim data for validation, this scheme is applied to analyze two typical ...
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Retroflection from slanted coastlines-circumventing the “vorticity paradox”
... Abstract. The balance of long-shore momentum flux re- quires that the solution of zonally retroflecting currents in- volve ring shedding on the western side. An important as- pect of the ring dynamics is the ring ...
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