Abstract
Energetics characteristics over Siberia, Northeastern Asia, China and Japan Sea are studied with two winter's upper air data.
The Siberia region, which is frequently occupied by a surface high pressure and an upper anticyclonic flow, shows destruction by cross-isobaric flow and negative dissipation of kinetic energy in the winter mean balance of kinetic energy. The Northeastern Asia and Japan Sea areas, which are frequently occupied by a surface low and an upper cyclonic flow, show generations and dissipations of kinetic energy. From the comparison of the regional balances of kinetic energy, the upper atmosphere over the China and Japan Sea regions together with the adjacent oceanic areas may be considered as the most energetically active area over the northern hemisphere in winter.
The studies of kinetic energy budgets for various flow patterns show that with the exception of Siberia, the kinetic energy generation, outflow and dissipation are associated with the cyclonic type flows. Even though the flow patterns over the China and Japan Sea regions are predominantly cyclonic, their kinetic energy budgets show extremely intense transformation in comparison with that of an average cyclonic flow over other regions in this study or over North America.
