Interdecadal Change of the Antarctic Oscillation and the Antarctic Circumpolar Wave
南极涛动和南极绕极波的年代际变化

The Antarctic Oscillation Index (AAOI) and the westerly index of Antarctic oscillation (Uaaoi) are defined by using the NCEP data of sea level pressure,temperature and 850-hPa westerly wind from January 1951 to December 2002. Long-term trend,interdecadal jump and cycles of AAOI and Uaaoi as well as the effect on the Antarctic circumpolar wave are discussed. Main conclusions show that the relationship between AAOI and Uaaoi is significant with the correlation coefficient of 0.218,which exceeds 99.9% confiden...