Abstract
The 3-D spiral structure resulting from the balance between the pressure gradient force, Coriolis force, and viscous force is a common atmospheric motion pattern. If the nonlinear advective terms are considered, this typical pattern can be bifurcated. It is shown that the surface low pressure with convergent cyclonic vorticity and surface high pressure with divergent anticyclonic vorticity are all stable under certain conditions. The anomalous structure with convergent anticyclonic vorticity is always unstable. But the anomalous weak high pressure structure with convergent cyclonic vorticity can exist, and this denotes the cyclone’s dying out.
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Liu, S., Liu, S., Fu, Z. et al. The structure and bifurcation of atmospheric motions. Adv. Atmos. Sci. 21, 557–561 (2004). https://doi.org/10.1007/BF02915723
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DOI: https://doi.org/10.1007/BF02915723