STUDY ON INTERDECADAL RELATION FEATURES OF NORTH PACIFIC SSTA WITH EAST ASIAN SUMMER MONSOON AS WELL AS ITS MECHANISM
Interdecadal features of east Asian monsoon and rainfall over north China and its relation with north Pacific SSTA are investigated by using NCEP/NCAR reanalysis data,SST data and Chinese station precipitation data.It's pointed out that east Asian summer monsoon varies obviously,with the precipitation in north China being abundant during strong east Asian summer monsoon phase before 1976,and the precipitation being deficient after 1976.Results also show that SSTA over north Pacific forces atmosphere mightily,which puts interannual scale “incitation” on interdecadal background field.A wavetrain is strengthened or weakened,by this way that SSTA over north Pacific connects with east Asian summer circulation,which causes the interannual variation of rainfall in north China with more precipitation before 1976,and v.v.after 1976.
国家科技期刊平台
NSTL
万方数据
维普
