Results 1 to 10 of about 10,485 (275)
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
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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 topography is a weak perturbation, and evolution is determined by
Siegelman L, Young WR.
europepmc +5 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
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The physics of potential vorticity
Meteorologische Zeitschrift, 2007 Since the principle of the potential vorticity was published by Hans ERTEL more than sixty years ago (originally in 1942 and later in 1955) a lot of practical applications with numerical or analytical character, as well as interpretative reconstructions ...
Fritz Herbert
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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
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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
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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.
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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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