Potential vorticity regimes over East Asia during winter
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2016jd025893
Abstract: Nine potential vorticity (PV) regimes over East Asia are identified by applying a Self-Organizing Map and Hierarchical Ascendant Classification regime analysis to the daily PV reanalysis fields on the 300K isentropic surface for December-March 1948–2014.… read more here.
Keywords: temperature anomalies; potential vorticity; vorticity regimes; regimes east ... See more keywords
Understanding the vertical structure of potential vorticity in tropical depressions
Sign Up to like & getrecommendations! Published in 2019 at "Quarterly Journal of the Royal Meteorological Society"
DOI: 10.1002/qj.3539
Abstract: Author(s): Murthy, VS; Boos, WR | Abstract: © 2019 Royal Meteorological Society Potential vorticity (PV) has been used to understand the intensification and motion of a variety of tropical vortices. Here, atmospheric reanalyses and idealized… read more here.
Keywords: vertical structures; vorticity; stratiform deep; tropical depressions ... See more keywords
Diabatic generation of negative potential vorticity and its impact on the North Atlantic jet stream
Sign Up to like & getrecommendations! Published in 2020 at "Quarterly Journal of the Royal Meteorological Society"
DOI: 10.1002/qj.3747
Abstract: Localised regions of negative potential vorticity (PV) are frequently seen on the equatorward flank of the upper-tropospheric jet streams in analysis and forecast products. Their positioning, on the anticyclonic side of the jet and often… read more here.
Keywords: jet stream; jet; negative potential; potential vorticity ... See more keywords
Interannual influences of the surface potential vorticity forcing over the Tibetan Plateau on East Asian summer rainfall
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Atmospheric Sciences"
DOI: 10.1007/s00376-021-1218-4
Abstract: The influences of interannual surface potential vorticity forcing over the Tibetan Plateau (TP) on East Asian summer rainfall (EASR) and upper-level circulation are explored in this study. The results show that the interannual EASR and… read more here.
Keywords: forcing tibetan; vorticity forcing; surface potential; rainfall ... See more keywords
The statistical nature of turbulent barotropic ocean jets
Sign Up to like & getrecommendations! Published in 2017 at "Ocean Modelling"
DOI: 10.1016/j.ocemod.2017.03.008
Abstract: Jets are an important element of the global ocean circulation. Since these jets are turbulent, it is important that they are characterized using a statistical framework. A high resolution barotropic channel ocean model is used… read more here.
Keywords: barotropic; nature turbulent; turbulent barotropic; statistical nature ... See more keywords
Potential vorticity diagnostics based on balances between volume integral and boundary conditions
Sign Up to like & getrecommendations! Published in 2019 at "Ocean Modelling"
DOI: 10.1016/j.ocemod.2019.04.004
Abstract: Abstract Taking advantage of alternative expressions for potential vorticity (PV) in divergence forms, we derive balances between volume integral of PV and boundary conditions, that are then applied to practical computations of PV: • We… read more here.
Keywords: volume integral; integral boundary; potential vorticity; boundary conditions ... See more keywords
Baroclinic toroidal quasi-geostrophic vortices
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Fluids"
DOI: 10.1063/5.0005942
Abstract: We investigate the stability and nonlinear evolution of two tori of opposite-signed uniform potential vorticity, located one above the other, in a three-dimensional, continuously stratified, quasi-geostrophic flow. We focus on the formation of hetons as… read more here.
Keywords: geostrophic vortices; toroidal quasi; baroclinic toroidal; opposite signed ... See more keywords
Potential vorticity transport in weakly and strongly magnetized plasmas
Sign Up to like & getrecommendations! Published in 2021 at "Physics of Plasmas"
DOI: 10.1063/5.0041072
Abstract: Tangled magnetic fields, often coexisting with an ordered mean field, have a major impact on turbulence and momentum transport in many plasmas, including those found in the solar tachocline and magnetic confinement devices. We present… read more here.
Keywords: field; transport; physics; stochastic fields ... See more keywords
Synoptic-scale potential vorticity intrusion over northeastern China during winter and its influence on surface air temperature
Sign Up to like & getrecommendations! Published in 2019 at "Atmospheric and Oceanic Science Letters"
DOI: 10.1080/16742834.2019.1616279
Abstract: ABSTRACT A regional potential vorticity (PV) intrusion (PVI) (RPVI) index, defined as the sum of the numbers of grids containing PVI within a certain area for each day, is used to reflect the day-to-day PVI… read more here.
Keywords: vorticity; synoptic scale; vorticity intrusion; china winter ... See more keywords
Multiple zonal jets and convective heat transport barriers in a quasi-geostrophic model of planetary cores
Sign Up to like & getrecommendations! Published in 2017 at "Geophysical Journal International"
DOI: 10.1093/gji/ggx315
Abstract: We study rapidly-rotating Boussinesq convection driven by internal heating in a full sphere. We use a numerical model based on the quasi-geostrophic approximation for the velocity field, whereas the temperature field is three-dimensional. This approximation… read more here.
Keywords: multiple zonal; model; quasi geostrophic; heat ... See more keywords
A Climatological Assessment of Intense Extratropical Cyclones from the Potential Vorticity Perspective
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Climate"
DOI: 10.1175/jcli-d-18-0461.1
Abstract: Extratropical cyclones (ETCs) are known to intensify due to three vertically interacting positive potential vorticity perturbations that are associated with potential temperature anomalies close to the surface (θB), condensational heating in the lower-level atmosphere (qsat),… read more here.
Keywords: climatological assessment; potential vorticity; extratropical cyclones; vorticity ... See more keywords