搜索结果: 1-15 共查到“理学 potential vorticity”相关记录57条 . 查询时间(0.062 秒)
High resolution numerical study of the Algiers 2001 flash flood: sensitivity to the upper-level potential vorticity anomaly
Algiers flash flood
2010/1/27
From 9 to 11 November 2001, intense cyclogenesis affected the northern coasts of Africa and more particularly the densely populated city of Algiers. During the morning of 10 November, more than 130 mm...
Gradient evolution for potential vorticity flows
Gradient evolution potential vorticity flows
2009/11/12
Two-dimensional unsteady incompressible flows in which the potential vorticity (PV) plays a key role are examined in this study, through the development of the evolution equation for the PV gradient. ...
The transport of the potential vorticity gradient $\bnabla{q}$ along surfaces of constant temperature $\theta$ is investigated for the stratified Euler, Navier-Stokes and hydrostatic primitive equatio...
Clarification on the generation of absolute and potential vorticity in mesoscale convective vortices
absolute and potential vorticity mesoscale convective vortices Clarification
2009/10/13
In this paper, we clarify several outstanding issues concerning the predominant mechanism of vorticity generation in mesoscale convective vortices (MCVs) in weak to modest baroclinic environments with...
Inclusion of potential vorticity uncertainties into a hydrometeorological forecasting chain：application to a medium size basin of Mediterranean Spain
mesoscale model ensemble prediction system quantitative precipitation forecasts
2009/7/22
The improvement of the short- and mid-range numerical runoff forecasts over the flood-prone Spanish Mediterranean area is a challenging issue. This work analyses four intense precipitation events whic...
Maps from the Mid-Ocean Dynamics Experiment：Part II. Potential vorticity and its Conservation
Mid-Ocean Dynamics Experiment Conservation Potential vorticity
2009/3/7
Observations of float trajectories and vertical density profiles from the Mid-Ocean Dynamics Experiment are analyzed in terms of a likely equation of motion for mesoscale eddies involving the conserva...
North Atlantic Potential Vorticity and Its Relation to the General Circulation
Atlantic Potential Vorticity General Circulation
2009/2/8
Maps and sections of the large-scale North Atlantic potential vorticity q are presented. Here q is fdρ/dz, where f is the Coriolis frequency, ρ the potential density and z the vertical coordinate. The...
Ventilation, Potential-Vorticity Homogenization and the Structure of the Ocean Circulation
Potential-Vorticity Homogenization Ocean Circulation Ventilation
2009/2/6
A model for the vertical structure of the oceanic circulation is presented that combines elements of the theory of the ventilated thermocline, given by Luyten, Pedlosky and Stommel, with the theory of...
Can the Western Boundary Layer Affect the Potential Vorticity Distribution in the Sverdrup interior of a Wind Gyre?
Western Boundary Layer Potential Vorticity Wind Gyre
2009/2/6
The question posed in the title of this paper is answered in the affirmative by investigating a two-layer, quasi-geostrophic model of the wind-driven circulation. The two layers model the thermocline ...
The Ventilation of the World’s Oceans：Maps of the Potential vorticity Field
World’s Oceans Potential vorticity Field
2009/1/15
Maps of potential vorticity (q) within four different density layers are presented for the North and South Atlantic, North and South Pacific, and Indian Oceans. Potential vorticity is evaluated as (f/...
On the Potential Vorticity Structure of Weakly Ventialted Isopycnals：A Theory of Subtropical Mode Water Maintenance
Potential Vorticity Structure Weakly Ventialted Isopycnals Subtropical Mode Water Maintenance
2009/1/12
A two-layer model of the general circulation including wind and thermal forcing is discussed. The flow in each layer is geostrophic, hydrostatic and obeys linear potential vorticity constraints. The e...
Dynamics of Potential Vorticity Fronts and Eddy Detachment
Potential Vorticity Fronts Eddy Detachment
2009/1/12
The formation and detachment of quasi-geostrophic eddies in a 1½ layer jet is studied using a piecewise uniform potential vorticity model. A vorticity front separates the two pieces, and thus t...
Eddy-Potential vorticity Fluxes in the Gulf Stream Recirculation
Eddy-Potential vorticity Fluxes Gulf Stream Recirculation
2009/1/10
The local effect of the mesoscale eddy field on the mean potential vorticity distribution of the Gulf Stream recirculation region is determined from the quasi-geostrophic eddy potential vorticity flux...
An Objective Analysis of the POLYMODE Local Dynamics Experiment. Part II：Streamfunction and Potential Vorticity Fields during the Intensive Period
Local Dynamics Experiment Streamfunction Potential Vorticity Fields Intensive Period
2009/1/10
An analysis is made of the geostrophic streamfunction, potential vorticity and dynamical balances for the mesoscale flow during the intensive Period of the POLYMODE Local Dynamics Experiment The metho...
Hydraulic Control of Flows with Nonuniform Potential Vorticity
Hydraulic Control Flows Nonuniform Potential Vorticity
2009/1/9
The hydraulics of flow contained in a channel and having nonuniform potential vorticity is considered from a general standpoint. The channel cross section is rectangular and the potential vorticity is...