On the Seasonal Transition and the Interannual Variability in Global Kinetic Energy at 500 hPa, Accompanied with Anomalies of Energy during the 1982 / 83 ENSO

Utilizing the material of monthly means of the three primary kinetic energy modes over the whole globe at 500 hPa during the nine years of 1980-1988, both the rapid seasonal changes and the interannual variability in the general circulation in terms of the energy modes have been investigated, with special attention paid to the unusual year 1983. Two main results are obtained. One, there are remarkable seasonal rapid changes over the Northern Hemisphere, oc-curring generally in April and October. The other, among the nine years of 1980-1988, 1983 is the only one with unusual energy modes and remarkably abnormal seasonal changes.