CATASTROPHE THEORY OF SEASONAL VARIATION

【摘要】 <正> This paper studies the abrupt change of equilibria state and the equilibria state of low order, barotropical and dissipative system under thermal forcing that have successive seasonal variation. The typical seasonal equilibria of atmospheric circulation are winter and summer circulations. Owing to thermal forcing and nonlinear interaction of atmospheric motion, the atmospheric circulation appears several seasonal abrupt and northward jumpings of subtropical highs with the seasonal variation of the thermal forcing parameter. In various meridional and zonal thermodynamic differences, the subtropical highs can appear different northward jumpings.更多还原

【Abstract】 This paper studies the abrupt change of equilibria state and the equilibria state of low order, barotropical and dissipative system under thermal forcing that have successive seasonal variation. The typical seasonal equilibria of atmospheric circulation are winter and summer circulations. Owing to thermal forcing and nonlinear interaction of atmospheric motion, the atmospheric circulation appears several seasonal abrupt and northward jumpings of subtropical highs with the seasonal variation of the thermal forcing parameter. In various meridional and zonal thermodynamic differences, the subtropical highs can appear different northward jumpings.更多还原