Tropical cyclone energy dispersion under vertical shears

Details Tropical cyclone energy dispersion under vertical shears Tropical cyclone energy dispersion under vertical shears

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3423807g&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 23, CiteID L23807

Physics

4

Atmospheric Processes: Tropical Meteorology, Atmospheric Processes: Synoptic-Scale Meteorology, Atmospheric Processes: Global Climate Models (1626, 4928)

Scientific paper

Tropical cyclone Rossby wave energy dispersion under easterly and westerly vertical shears is investigated in a baroclinic model. In a resting environment, the model simulates a Rossby wave train that has a baroclinic structure with alternating cyclonic-anticyclonic-cyclonic (anticyclonic-cyclonic-anticyclonic) circulations in the lower (upper) troposphere. A significant asymmetry appears in the wave train development under easterly and westerly vertical shears, that is, an easterly (westerly) shear confines the maximum amplitude of the wave train primarily to the lower (upper) level. It is proposed that the vertical wind shear may impact the Rossby wave train development through both the barotropic-baroclinic mode coupling and the modulation of the group velocity by the mean flow through a ``Doppler shift effect''. Additional experiments with uniform westerly and easterly mean flows confirm the hypothesis. The enhancement of the Rossby wave train in the lower level by the easterly shear may have an important implication for understanding the tropical cyclogenesis and the origin of the synoptic wave trains in the western North Pacific.

Affiliated with

Also associated with

No associations

Rating

Tropical cyclone energy dispersion under vertical shears does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tropical cyclone energy dispersion under vertical shears, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tropical cyclone energy dispersion under vertical shears will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1758816