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On the initial formation of deep fronts
Author(s) -
Manton M. J.
Publication year - 1983
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49710946207
Subject(s) - baroclinity , perturbation (astronomy) , shearing (physics) , mechanics , temperature gradient , front (military) , geology , transverse plane , vector field , homogeneous , shear (geology) , physics , meteorology , statistical physics , geotechnical engineering , petrology , structural engineering , quantum mechanics , engineering
A perturbation analysis is used to describe the initial intensification of a baroclinic temperature field by the shearing action of an upper‐level transverse wave. The perturbation parameter ε is the ratio of the across‐front to along‐front length scales. The interaction of the horizontal shear of the large‐scale wave with the horizontal temperature gradient is found to generate a vertical velocity field, which is steady in time to O(ε 2 ). Conditions are sought for the formation of anafronts and katafronts.