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Dynamics of the Southern Hemisphere Spiral Jet
2007
Journal of the Atmospheric Sciences
The formation of the Southern Hemisphere spiral jet is investigated using observations over a 40-yr period. It is found that between late March and early April, the upper-tropospheric westerly jet in the Southern Hemisphere undergoes a transition from an annular structure in midlatitudes to a spiral structure that extends from 20°to 55°S. The transition to the spiral structure is initiated by the formation of a subtropical jet, localized in the central Pacific. The inception of the jet spiral
doi:10.1175/jas3939.1
fatcat:7w6ahlummzhptg3eaokzvwxq2y