The monthly values of the zonal wind vertical difference or zonal wind shear(ZWS) between 200 hPa and 850 hPa are used to assess the interannual variability of the tropospheric circulation anomalies.

The main purpose is to analyse the interannual variability of climate over China region.

The interannual variability of the summer WPSH hindcasted by the GAMIL CliPAS tier-two experiment is investigated.

Decadal variability in the North Pacific as simulated by FGOALS_g fast coupled climate model;

An EOF analysis of the decadal variability of sea temperature anomaly fields at upper-ocean standard levels has been performed in this paper,and the abrupt change feature of sea temperature has been tested by use of movable t-test technique.

is also used to discuss the WDOG effects on decadal variability of THC.

The progress of studies on inter decadal climate variability of the Pacific atmosphere ocean system is reviewed,a brief introduction is given to inter decadal variability of atmospheric circulation, oceanic state and their interaction,as well as main mechanisms of inter decadal variability of the Pacific atmosphere ocean system.

The roles of wind stress and surface heat flux in generating the Pacific interannual and interdecadal variability are examined by using two sets of simulations performed with LASG/IAP climate ocean model named LICOM.