Results 21 to 30 of about 8,939,787 (291)
Potential vorticity in magnetohydrodynamics [PDF]
Journal of Plasma Physics, 2014 A version of Noether's second theorem using Lagrange multipliers is used to investigate fluid relabelling symmetries conservation laws in magnetohydrodynamics (MHD). We obtain a new generalized potential vorticity type conservation equation for MHD which takes into account entropy gradients and the J × B force on the plasma due to the current J and ...
Webb, G. M., Mace, R. L.
openaire +2 more sources
暴雨灾害, 2023 Central-Asian cyclone is one of the major synoptic systems that causes disastrous weather such as heavy rain, snowstorm, strong wind, and sand dust in Xinjiang.
Xin ZHANG, Qiufen XIONG, Xiaofei JIANG
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Origin of low-tropospheric potential vorticity in Mediterranean cyclones [PDF]
Weather and Climate Dynamics, 2023 Mediterranean cyclones are extratropical cyclones, typically of smaller size and weaker intensity than other cyclones that develop over the main open ocean storm tracks. Nevertheless, Mediterranean cyclones can attain high intensities, even comparable to
A. Scherrmann, H. Wernli, E. Flaounas
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Gaoyuan qixiang, 2022 The data of NCEP reanalysis （1°×1°）， national ground automatic stations， radiosonde and Sichuan encrypted automatic stations were used to diagnose the three definitions potential temperature and potential vorticity in an extreme rainstorm which occurred ...
Yunyun GUO +4 more
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Tellus: Series A, Dynamic Meteorology and Oceanography, 2020 Three-dimensional potential vorticity (PV) structures on the convective scale during extreme precipitation events are investigated. Using the high resolution COSMO-REA2 data set, 3D composites of the PV, with and without Coriolis parameter and related ...
Annette Müller +2 more
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Impacts of the antartic ozone hole influence events over southern Brazil in October 2015 [PDF]
Anais da Academia Brasileira de Ciências, 2023 The impact of the Antarctic Ozone Hole Influence over Southern Brazil in October 2015 was analyzed using daily mean data of the Total Column Ozone (TCO), Ultraviolet Index (UVI) and Radiative Cloud Fraction (RCF) from the Ozone Monitoring Instrument ...
ALANNA M. DE SOUZA +12 more
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Influence of bottom topography on integral constraints in zonal flows with parameterized potential vorticity fluxes [PDF]
, 2013 An integral constraint for eddy fluxes of potential vorticity (PV), corresponding to global momentum conservation, is applied to two-layer zonal quasi-geostrophic channel flow. This constraint must be satisfied for any type of parameterization of eddy PV
Zalesny, V.B. +4 more
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On the mix-down times of dynamically active potential vorticity filaments [PDF]
, 1999 A simple model is used to study the evolution of potential vorticity filaments, viewed in cross-section, subject to steady shear and deformation flows representative of the large-scale atmospheric circulation.
Esler, JG +9 more
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Vorticity in the solar photosphere [PDF]
, 2010 Aims. We use magnetic and non-magnetic 3D numerical simulations of solar granulation and G-band radiative diagnostics from the resulting models to analyse the generation of small-scale vortex motions in the solar photosphere.Methods.
Shelyag, S. +11 more
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Coupling Harmonic Functions-Finite Elements for Solving the Stream Function-Vorticity Stokes Problem [PDF]
, 2004 We consider the bidimensional Stokes problem for incompressible fluids in stream function-vorticity form. The classical finite element method of degree one usually used does not allow the vorticity on the boundary of the domain to be computed ...
Salaün, Michel +2 more
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