Results 81 to 90 of about 10,485 (275)

Dynamics of Quantum Vorticity in a Random Potential [PDF]

Physical Review Letters, 2009
Physical Review Letters, final ...
openaire   +3 more sources

Fractional Moment Theory for Anomalous Transport: A Unified Framework for Lévy Flights, Fractals, and Complex Dynamical Systems

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We develop a unified mathematical framework extending classical moment theory from discrete integer orders to a continuous spectrum of real orders f>0$$ f>0 $$, providing a systematic statistical characterization of complex systems exhibiting power‐law behavior.
Farrukh A. Chishtie
wiley   +1 more source

Simply-connected vortex-patch shallow-water quasi-equilibria

, 2014
This work is supported by a UK Natural Environment Research Council studentshipWe examine the form, properties, stability and evolution of simply-connected vortex-patch relative quasi-equilibria in the single-layer ƒ-plane shallow-water model of ...
Dritschel, David Gerard, Plotka, Hanna
core   +1 more source

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., Kim, Da Hye, Brown, Richard, Kwon, Oh Joon   +3 more
core   +1 more source

Polar‐low track prediction using machine‐learning methods

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Machine‐learning models are developed to produce reliable and efficient forecasts of polar‐low (PL) trajectories 12 hours ahead. A temporal model (RLSTM) benefiting from the rolling‐forecast strategy, improves overall prediction accuracy and is suitable for quick experimentation, while a spatiotemporal model (PL‐UNet), incorporating both historical and
Ziying Yang, Rune Grand Graversen, Filippo Maria Bianchi, Jiping Liu, Ruibo Lei   +4 more
wiley   +1 more source

Gyrofluid potential vorticity equation and turbulent equipartion states:Paper [PDF]

, 2015
An equation governing potential vorticity in a magnetized plasmas is derived. The equation is analogous to Ertel's theorem. In the long wave-length limit the potential vorticity equals the ratio of the gyro-frequency plus the E × B- and diamagnetic ...
Nielsen, Anders Henry, Rasmussen, J. Juul, Juul Rasmussen, Jens, Madsen, Jens, Treue, Frederik, Naulin, Volker   +5 more
core   +1 more source

How consistently do ensemble prediction systems represent the growth of atmospheric uncertainty?

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Spread‐based diagnostics calculated for 12 ensemble prediction systems are compared to understand the consistency with which they represent atmospheric uncertainty growth. Good correlation between all these systems is found in the extratropics for a lead time range from 48 hr to between 96 hr and 192 hr.
Douglas Wood, Suzanne Gray, John Methven, Mark Rodwell   +3 more
wiley   +1 more source

‘Preferred Trajectories’ defined by mass and potential vorticity conservation

Geofísica Internacional, 2020
La mayoría de los métodos para estimar velocidades geostróficas "absolutas", en ausencia de mediciones directas de velocidad, utilizan restricciones que definen la dirección del flujo a diferentes niveles verticales.
José Ochoa, Antonio Badan, Julio Sheinbaum, Jorge Castro   +3 more
doaj   +1 more source

Characterization of synoptic environment for mesoscale convective systems over South Korea using ERA5 reanalysis data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In this study, the synoptic conditions for modes of mesoscale convective systems (MCSs) in South Korea are generalized based on composite analysis. The preferred precipitation region, synoptic patterns, moisture transport, sea surface temperature and thermodynamic and dynamic instabilities are characterized according to four modes: convective cells (CC)
Jeong‐Eun Lee, GyuWon Lee
wiley   +1 more source

Convective inhibition beneath an upper-level PV anomaly

, 2008
Copyright @ 2008 Royal Meteorological SocietyUpper-level potential-vorticity (PV) anomalies reduce the convective stability of the troposphere through their impact on the vertical potential-temperature profile, thus reducing convective inhibition (CIN ...
Norton, E. G., Russell, Andrew, Browning, KA, Norton, EG, Vaughan, G., Browning, K. A., Vaughan, G.; id_orcid, Blyth, A. M., Russell, A, Blyth, AM, Morcrette, C., Morcrette, CJ, Vaughan, G, Russell, A., Morcrette, C. J.   +14 more
core   +1 more source