Observational Evidence for Predictions of Tropical Cyclone Propagation Relative to Environmental Steering
Carr, L.E. III
Elsberry, Russell L.
MetadataShow full item record
Theories of vortex motion due to the variations of the Coriolis parameter and environmental vorticity are compared to observations of tropical cyclone motion relative to computed "steering flows" using previously published composite data. The composite results are manipulated to obtain a vector quantity for the difference between tropical cyclone motion and steering, and this vector difference is termed "propagation." The properties of these propagation vectors within various composite data stratifications provide tentative support for nonlinear numerical results such as: (i) the general magnitude and direction of the β-induced propagation; (ii) the dependence of such propagation on the outer-wind strength of the tropical cyclone; and (iii) the dependence of such propagation on the direction of the environmental vorticity gradient. Ambiguities in the composite data are discussed with respect to linear and nonlinear theories of tropical cyclone propagation, and several new composite data stratifications are suggested to facilitate detecting individual propagation-inducing processes.
The article of record as published may be found at http://dx.doi.org/10.1175/1520-0469
Showing items related by title, author, creator and subject.
Carr, Lester E. (Monterey, California. Naval Postgraduate School, 1989-09);A nondivergent. barotropic analytical model to predict steady tropical cyclone (TC) propagation relative to the large-scale environment is developed in terms of a "selfadvection" process in which the TC is advected by ...
Springer, Cory A. (Monterey, California. Naval Postgraduate School, 1994-06);The short term teleconnections arising from an individual tropical cyclone in the western Pacific were examined using a global operational data assimilation system and forecast model. In the ...
Jakus, Craig E. (Monterey, California. Naval Postgraduate School, 1995-09);The short term teleconnections arising from an individual tropical cyclone in tne western Pacific (typhoon Seth, October 1994) were examined using an operational global data assimilation system and numerical weather ...