THE MECHANISM OF SUDDEN STRATOSPHERIC WARMING——INTERACTION OF STRATOSPHERIC AND TROPOSPHERIC CIRCULATIONS

Ⅰ. INTRODUCTIONMany observational data have demonstrated that the sudden stratospheric warming (SSW) play an essential role in stratospheric circulation and its seasonal variation. And SSW is usually accompanied by anomalous amplification of planetary wavenumbers 1 and/or 2 in the troposphere. Matsuno firstly proposed from dynamical point that SSW re-