Access the full text.
Sign up today, get DeepDyve free for 14 days.
B. Hoskins (1991)
Towards a PV- θ view of the general circulationTellus B, 43
H. Kuo, Chih-Pei Chang, Yi‐Ting Yang, Han Jiang (2008)
Western North Pacific Typhoons with Concentric EyewallsMonthly Weather Review, 137
Yuqing Wang (2008)
Rapid Filamentation Zone in a Numerically Simulated Tropical CycloneJournal of the Atmospheric Sciences, 65
D. Hanley, J. Molinari, D. Keyser (2001)
A Composite Study of the Interactions between Tropical Cyclones and Upper-Tropospheric TroughsMonthly Weather Review, 129
D. Keyser, M. Shapiro (1986)
A Review of the Structure and Dynamics of Upper-Level Frontal ZonesMonthly Weather Review, 114
Hung, C. Kuo (1999)
A Possible Mechanism for the Eye Rotation of Typhoon Herb
Bluestein (1992)
Synoptic-Dynamic Meteorology in Midlatitudes.
C. Rozoff, W. Schubert, B. McNoldy, J. Kossin (2006)
Rapid Filamentation Zones in Intense Tropical Cyclones.Journal of the Atmospheric Sciences, 63
(1994)
Introduction to Circulating Atmospheres
T. Kunz, K. Fraedrich, F. Lunkeit (2009)
Synoptic scale wave breaking and its potential to drive NAO‐like circulation dipoles: A simplified GCM approachQuarterly Journal of the Royal Meteorological Society, 135
R. Ferreira, W. Schubert (1999)
The Role of Tropical Cyclones in the Formation of Tropical Upper-Tropospheric TroughsJournal of the Atmospheric Sciences, 56
B. Hua, P. Klein (1998)
An exact criterion for the stirring properties of nearly two-dimensional turbulencePhysica D: Nonlinear Phenomena, 113
C. Thorncroft, B. Hoskins, M. McIntyre (1993)
Two paradigms of baroclinic‐wave life‐cycle behaviourQuarterly Journal of the Royal Meteorological Society, 119
J. McWilliams (1984)
The emergence of isolated coherent vortices in turbulent flowJournal of Fluid Mechanics, 146
Walker Kelly, Donald Mock (1982)
A Diagnostic Study of Upper Tropospheric Cold Lows Over the Western North PacificMonthly Weather Review, 110
A. Ōkubo (1970)
Horizontal dispersion of floatable particles in the vicinity of velocity singularities such as convergencesDeep Sea Research and Oceanographic Abstracts, 17
C. Rozoff (2007)
Aspects of moat formation in tropical cyclone eyewall replacement cycles
C. Appenzeller, H. Davies, W. Norton (1996)
Fragmentation of stratospheric intrusionsJournal of Geophysical Research, 101
H. Bluestein (1993)
Synoptic-dynamic meteorology in midlatitudes. Vol. II., 594
Thomas Guinn, W. Schubert (1993)
Hurricane Spiral BandsJournal of the Atmospheric Sciences, 50
T. Koh, B. Legras (2002)
Hyperbolic lines and the stratospheric polar vortex.Chaos, 12 2
J. Weiss (1991)
The dynamics of entropy transfer in two-dimensional hydrodynamicsPhysica D: Nonlinear Phenomena, 48
This paper analyzes synoptic-scale trough-thinning processes using a filamentation time diagnostic. The filamentation time diagnostic is derived from the potential vorticity equation expressed in spherical coordinates in the horizontal plane and the isentropic coordinate in the vertical direction. The diagnostic is an accurate measure of stirring processes under the condition of “slowly varying velocity gradients.” Trough-thinning processes are analyzed for one tropical example and two midlatitude examples. The results indicate that the filamentation time for the tropical trough-thinning event is generally longer than those for the midlatitude trough events. In addition to the effects of stretching and shearing deformation, the filamentation time diagnostic contains the effects of divergence. For the calculation of filamentation time on isentropic surfaces in spherical coordinates, it is acceptable to ignore the curvature effects in the tropics; however, in both the midlatitudes and the tropics, isentropic divergence effects should be retained for improved accuracy. Combining an analysis of cross potential vorticity contour flows on isentropic surfaces with the filamentation time analysis gives a more complete description of the dynamics. The results show that the filamentation time diagnostic can serve as a useful aid in the analysis and prediction of trough thinning and cutoff-low formation.
Monthly Weather Review – American Meteorological Society
Published: Jun 19, 2009
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.