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221
On the advection of tracer by eddies on the beta-plane: A numerical study
Published 1999-01-01“…To put this conclusion in quantitative terms, a "tracer variability indicator" is introduced and shown to grow much faster than a similar characteristic of the potential vorticity field (notwithstanding the fact that the tracer concentration and PV satisfy the same governing equation). …”
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222
An alternative view on the role of the β-effect in the Rossby wave propagation mechanism
Published 2014-11-01“…The role of the β-effect in the Rossby wave propagation mechanism is examined in the linearised shallow water equations directly in momentum–height variables, without recourse to potential vorticity (PV). Rigorous asymptotic expansion of the equations, with respect to the small non-dimensionalised β parameter, reveals in detail how the Coriolis force acting on the small ageostrophic terms translates the geostrophic leading-order solution to propagate westward in concert. …”
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223
Why is Alpine south foehn not associated with the formation of lee vortices?
Published 2005-03-01“…Friction, which is usually neglected in idealized studies, tends to dampen orographically induced potential vorticity (PV) banners that may roll up into a closed vortex and thus hampers the formation of lee vortices. …”
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224
Three-Dimensional Numerical Study of the Effect of Protective Barrier on the Dispersion of the Contaminant in a Building
Published 2021-05-01“…The finite volume method and potential-vorticity vector formalism in their three-dimensional form were used to numerically study the impact of an adiabatic and impermeable vertical barrier on the dispersion of a local aero-contaminant due to the double-diffusive Rayleigh–Benard convection inside a cubic container. …”
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225
Overturning cells in the Southern Ocean and subtropical gyres
Published 2007-01-01“…The constraint can be interpreted either in terms of vertical fluxes of potential vorticity, or equivalently as an integral buoyancy budget for an imaginary fluid parcel recirculating around a closed Bernoulli contour. …”
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226
Diagnosis and numerical simulations of a heavy rain event in the Western Mediterranean Basin
Published 2006-01-01“…A set of mesoscale numerical simulations using MM5 is performed to investigate the mechanisms responsible for the convection development through several output diagnosis. A potential vorticity evolution showed how dry air masses were extruded from the stratospheric levels promoting strong cyclonic circulation at all levels. …”
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227
Characteristics of Nepartak (2021), a subtropical cyclone controlled by an upper‐tropospheric cutoff low
Published 2023-10-01“…An analysis of the potential vorticity (PV) tendency showed that the movement of Nepartak toward the COL ceased because of the counter‐balance of the horizontal/vertical PV advection with the PV anomaly generated by diabatic heating, whereas the surface cyclone northward motion was primarily due to the horizontal PV advection associated with the COL. …”
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228
Jovian Vortices and Jets
Published 2021“…Various cases of vortices with a constant potential vorticity anomaly atop zonal winds and the stability of the underlying winds are considered using a mix of computational and analytical techniques.…”
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229
Assessing eddy parameterization schemes in a differentially heated rotating annulus experiment
Published 2010“…Depending on the stages of flow evolution and on the region in parameter space under consideration, either heat, quasi-geostrophic potential vorticity (QGPV) or relative vorticity (QGRV) may become a suitable variable on which to parameterize baroclinic eddy fluxes in a down-gradient manner. …”
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230
Overturning cells in the Southern Ocean and subtropical gyres
Published 2007“…The constraint can be interpreted either in terms of vertical fluxes of potential vorticity, or equivalently as an integral buoyancy budget for an imaginary fluid parcel recirculating around a closed Bernoulli contour. …”
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231
Analysis of a rapid increase of stratospheric ozone during late austral summer 2008 over Kerguelen (49.4° S, 70.3° E)
Published 2011-01-01“…The assimilated total O<sub>3</sub> values are consistent with SAOZ ground observations (within &plusmn;5%), and isentropic distributions of O<sub>3</sub> match well with maps of advected potential vorticity (APV) derived from the MIMOSA model, a high-resolution advection transport model, and from the ECMWF reanalysis. …”
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232
Study of tropical cyclone "Fanoos" using MM5 model – a case study
Published 2009-01-01“…Secondly "Fanoos" development from the lagrangian stand point in terms of vertical distribution of Potential Vorticity (PV) is also carried out around cyclone centre.…”
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233
Sensitivity of an idealized subtropical gyre to the eastern boundary conditions
Published 2001-07-01“…The corresponding boundary conditions are non-zero normal flux and constant potential vorticity, the latter being consistent with the generation of anticyclonic vorticity by the coastal jet. …”
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234
Seasonal stratospheric intrusion of ozone in the upper troposphere over India
Published 2010-11-01“…Observed enhanced O<sub>3</sub> mixing ratio in the upper troposphere is explained by, variation of Potential Vorticity (PV), tropopause pressure, relative humidity and CO-O<sub>3</sub> correlation.…”
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235
On the Dynamics of Canyon–Flow Interactions
Published 2018-11-01“…Hence, the principle of conservation of potential vorticity for such flows is sufficient to explain the fundamental physical properties of the canyon-upwelling process. …”
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236
Generation of large-scale intrusions at baroclinic fronts: an analytical consideration with a reference to the Arctic Ocean
Published 2016-12-01“…The analysis is based on the potential-vorticity equation in a long-wave approximation when the horizontal scale of disturbances is considered much larger than the local baroclinic Rossby radius. …”
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237
Mesoscale dynamics, structure and predictability of a severe Adriatic bora case
Published 2006-04-01“…The model reproduced well the onset and the strength of the investigated bora, as well as the establishment of bora-induced potential vorticity (PV) banners. On the other hand, surface turbulent kinetic energy (T K E) was poorly predicted. …”
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238
On the dynamics of wind-driven circumpolar currents
Published 2001“…At the latitudes of Drake Passage, potential vorticity contours are uninterrupted by coastlines, and large amplitude flows are possible even with weak forcing and dissipation. …”
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239
QUAGMIRE v1.3: a quasi-geostrophic model for investigating rotating fluids experiments
Published 2009“…The flow is forced either by a differentially rotating lid, or by relaxation to specified streamfunction or potential vorticity fields, or both. Dissipation is achieved through Ekman layer pumping and suction at the horizontal boundaries, including the internal interface. …”
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240
QUAGMIRE v1.3: a quasi-geostrophic model for investigating rotating fluids experiments
Published 2008“…The flow is forced either by a differentially rotating lid, or by relaxation to specified streamfunction or potential vorticity fields, or both. Dissipation is achieved through Ekman layer pumping and suction at the horizontal boundaries, including the internal interface. …”
Journal article