Results 11 to 20 of about 8,939,787 (291)
Reanalysis intercomparison of potential vorticity and potential-vorticity-based diagnostics [PDF]
Atmospheric Chemistry and Physics, 2021 Global reanalyses from data assimilation systems are among the most widely used datasets in weather and climate studies, and potential vorticity (PV) from reanalyses is invaluable for many studies of dynamical and transport processes.
L. F. Millán +5 more
doaj +3 more sources
Potential Vorticity Generation in Breaking Gravity Waves
Atmosphere, 2023 Potential vorticity (PV) is an important quantity in stratified flows because it is conserved following the flow in the absence of forcing and viscous and diffusive effects.
Michael L. Waite, Nicholas Richardson
doaj +2 more sources
On the definition of a moist‐air potential vorticity [PDF]
Quarterly Journal of the Royal Meteorological Society, 2014 International audienceA new potential vorticity is derived by using a specific entropy formulation expressed in terms of a moist-air entropy potential temperature.
Pascal Marquet, Marquet, Pascal
core +3 more sources
A Simple Eddy Potential Vorticity Flux Closure
Journal of Advances in Modeling Earth Systems, 2023 It is shown that within the limits of quasi‐geostrophic scaling, biharmonic mixing of potential vorticity is equivalent to biharmonic lateral friction together with biharmonic isopycnal thickness mixing in primitive equations, all with the same viscosity.
Carsten Eden
doaj +2 more sources
Piecewise uniform potential vorticity pancake shielded vortices [PDF]
Geophysical & Astrophysical Fluid Dynamics, 2017 Shielded vortices consist of a core of potential vorticity of a given sign surrounded (or shielded) by a layer of opposite-signed potential vorticity.
Reinaud, Jean Noel +1 more
core +5 more sources
Inversion of Potential Vorticity Density [PDF]
Journal of the Atmospheric Sciences, 2017 Inversion of potential vorticity density Ph * 5(va =h)/(›h/›z) with absolute vorticity va and function h is explored in h coordinates. This density is shown to be the component of absolute vorticity associated with the vertical vector of the ...
Egger, Joseph +2 more
core +3 more sources
Two-dimensional turbulence above topography: Vortices and potential vorticity homogenization. [PDF]
Proc Natl Acad Sci U S A, 2023 The evolution of unforced and weakly damped two-dimensional turbulence over random rough topography presents two extreme states. If the initial kinetic energy E is sufficiently high, then the ...
Siegelman L, Young WR.
europepmc +5 more sources
Predicting wind turbine blade loads using vorticity transport and RANS methodologies [PDF]
, 2009 Two computational methods, one based on the solution of the vorticity transport equation, and a second based on the solution of the Reynolds-Averaged Navier-Stokes equations, have been used to simulate the aerodynamic performance of a horizontal axis ...
Fletcher, Timothy M. +3 more
core +9 more sources
Atmosphere, 2023 Based on the definition of potential vorticity substance (W) and its equation, an index “iPV” representing the leading mode of the surface potential vorticity circulation (PVC) over the Tibetan Plateau is defined to characterize the orographic potential ...
Yimin Liu +3 more
doaj +1 more source
Extreme Cold and Snowstorm Event in North America in February 2021 Based on Satellite Data
应用气象学报, 2022 Using meteorological satellite data and the reanalysis dataset from European Centre for Medium Range Weather Forecasts(ERA5) and others, based on the accuracy evaluation of FY-3D/VASS temperature in North America, the climatic background, development and
Ren Suling +5 more
doaj +1 more source