Access the full text.
Sign up today, get DeepDyve free for 14 days.
D. Keyser, R. Anthes (1982)
The Influence of Planetary Boundary Layer Physics on Frontal Structure in the Hoskins-Bretherton Horizontal Shear ModelJournal of the Atmospheric Sciences, 39
I. Cooper, A. Thorpe, C. Bishop (1992)
The Role of Diffusive Effects On Potential Vorticity In FrontsQuarterly Journal of the Royal Meteorological Society, 118
A. Gill (1982)
Atmosphere-Ocean Dynamics
C. Snyder (1998)
Approximate dynamical equations for fronts modified by the planetary boundary layerJournal of the Atmospheric Sciences, 55
N. Nakamura (1994)
Nonlinear Equilibration of Two-Dimensional Eady Waves: Simulations with Viscous Geostrophic Momentum EquationsJournal of the Atmospheric Sciences, 51
R. Gall, R. Williams, T. Clark (1987)
On the minimum scale of surface frontsJournal of the Atmospheric Sciences, 44
H. Davies, J. Muller (1988)
Detailed description of deformation‐induced semi‐geostrophic frontogenesisQuarterly Journal of the Royal Meteorological Society, 114
B. Ley, W. Peltier (1978)
Wave Generation and Frontal CollapseJournal of the Atmospheric Sciences, 35
C. Snyder, W. Skamarock, R. Rotunno (1993)
Frontal Dynamics near and following Frontal CollapseJournal of the Atmospheric Sciences, 50
W. Blumen (1980)
A Comparison between the Hoskins-Bretherton Model of Frontogenesis and the Analysis of an Intense Surface Frontal ZoneJournal of the Atmospheric Sciences, 37
Qin Xu, Wei Gu, Jidong Gao (1998)
Baroclinic eady wave and fronts. Part I : Viscous semigeostrophy and the impact of boundary conditionJournal of the Atmospheric Sciences, 55
David Knight (1988)
a Numerical Modeling Study of Frontogenesis and Cold-Frontal Rainbands.
R. Wu, W. Blumen (1982)
An Analysis of Ekman Boundary Layer Dynamics Incorporating the Geostrophic Momentum ApproximationJournal of the Atmospheric Sciences, 39
N. Nakamura, I. Held (1989)
Nonlinear Equilibration of Two-Dimensional Eady WavesJournal of the Atmospheric Sciences, 46
M. Cullen (1989)
On the incorporation of atmospheric boundary layer effects into a balanced modelQuarterly Journal of the Royal Meteorological Society, 115
B. Hoskins, F. Bretherton (1972)
Atmospheric Frontogenesis Models: Mathematical Formulation and SolutionJournal of the Atmospheric Sciences, 29
S. Garner (1989)
Fully Lagrangian Numerical Solutions of Unbalanced Frontogenesis and Frontal COllapseJournal of the Atmospheric Sciences, 46
By subtracting the viscous semigeostrophic (SG) equations from the primitive equations, a set of nonlinear perturbation equations is derived and used to study the unbalanced perturbations generated during the process of Eady wave frontogenesis and quantify the errors in the viscous SG solutions with two types (free slip and nonslip) of boundary conditions. This set of equations shows that the unbalanced perturbation is generated by a vector forcing, called the SG forcing, whose components are defined by the SG Lagrangian time derivatives of three ageostrophic components in the cross-frontal wind, along-frontal wind, and buoyancy fields, respectively. It is found that the unbalanced perturbations are generated almost totally by the wind-forcing components and the buoyancy forcing is always negligibly small. In the free-slip case, the along-frontal wind forcing is weaker than the cross-frontal one and the unbalanced perturbations are generated largely as a linear response in the form of inertial gravity waves to the forcing. In the nonslip case, the along-frontal wind-forcing component is slightly stronger than the cross-frontal forcing, but the unbalanced perturbations are generated in the form of enhanced planetary boundary layer pumping immediately ahead of the front and in the form of inertial gravity waves in the warm sector farther away from the front. In both cases, the unbalanced perturbations are much weaker than their balanced counterparts even when the fronts are fully developed.
Journal of the Atmospheric Sciences – American Meteorological Society
Published: Jun 7, 1999
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.