| The NCEP/NCAR reanalysis data of month mean during 1951—2005 and 160 stations month precipitation data of National Climate Center of Chinese during 1961—2000 have used in this research. Analyzed correlativity between of Lian Yi etc. defined East—Asia summer monsoon ISMΦindex of 25oN—40oN and global surface (2m) mean temperature at month or season,select correlation key area from correlated field of summer,ex- winter,ex- spring,defined and compute thermodynamic anomaly index at someone time and someone area,analysis relation between of these thermodynamic anomaly index with East Asia subtropical monsoon ISMΦindex and China precipitation of Jul—Aug,also analysis they influenced mechanism of preliminary. Main conclusions as follows:(1) All 25oN—40oN's East—Asia summer monsoon ISMΦindex had remarkable positive correlativity over North Pacific west wind drifts areas and remarkable negative correlativity over middle—east equator Pacific at summer surface temperature field , from northwest to southeast had positive to negative distribution formation over North Pacific,it was above all ocean thermodynamic anomaly basic factor for push EASM from 25oN to northward in summer,so EASM was weaker while PDO was warm phase,or EASM was stronger while PDO was cool phase.(2) 30oN and 35oN's ISMΦindex had most remarkable correlativity withglobal summer surface temperatures,the characteristic distribution was global scale,but notable relation area abrupt reduce,the area also obviously lets up of the ISMφindex of the 25oNs and 40 oN related distribution than summer surface mean temperature ,but related distribute situation likeness.(3) Likeness correlated characteristic in Ex- winter global surface temperature field ,but it's significance and key area were lower,so ex-winter surface temperature influence function at mid-latitude only.(4) Likeness correlated characteristic in spring,namely was correlated filed close of the ISMΦindex of 30oN and 35 oN,but is worse with index of 25oN and 40oN,but compares with summer and ex-winter same period(summer) and ex- winter,its significance and continuous slightly bad,the typical model in May is close at the spring average related distribute. Indicate global surface temperature have biggest influence to East Asia summer monsoon establishment at 117.5 oE , 35oN ,early-spring expect south Pacific Ocean have main function,mainly influence at north Pacific Ocean at later; The 35oN is boundary,summer monsoon in East Asia over 25—35oN build mainly influence by ex-pring ocean temperature change,likely north Pacific Ocean PDO model distributed.(5) Correlation function between of Global surface temperature field and East Asia summer monsoon ISMφindex was different and jumped with season change,mainly express ocean energy process at summer half year Pacific Ocean , but winter half year relates have land thermodynamic energy,its closely with north Pacific Ocean anomaly. Ex-Winter to ex-Spring have positive correlation area over north equatorocean current area and its area abrupt increase and jump to west wind drift area about 40 oN, reflected mid-latitude ocean anomaly have important function to East Asia summer monsoon northward.(6) Defined thermodynamic difference index of north and south Pacific mean hot condition abnormality about northwest Pacific Ocean drifts area and the Middle-East equator Pacific Ocean in summer,this index have notable correlation with ISMφindex of 25—40o in East Asia,show at its have influence function to East Asian monsoon activity.(7) Ex-spring ocean thermodynamic difference have a decisive function to East Asia subtropical monsoon establish and keep on at 25oN,main performance was sea surface temperature difference of the Japan current area and Nino3 areas; In spring thermodynamic difference index not only to East Asia subtropical monsoon has better relativity,but also have better designation for summer monsoon establish in East Asia,keeps on,push toward north...etc. at different distribute characteristic of atmospheric circulation and high field at its strong or weak year in summer.(8) Defined Land-sea thermodynamic difference index shown difference at the west wind drift of northwest Pacific and east of Qinghai-Tibet Plateau minus of east land of China,it has notability correlativity with EASM ISMΦindex,so Qinghai-Tibet Plateau was enhancement factor not only of South China Sea monsoon onset but also effect EASM form 25oN northward;(9) Correlation distributing between of three indexs of summers thermodynamic anomaly index with Jul—Aug precipitation was from north to south"-,+,-,+" distribution characteristic,so that South Chinaand North China precipitation more and Yangtze River valley and the northeast China northern precipitation little of Jul—Aug.(10) While stronger ocean thermodynamic anomaly in winter (as Pacific Ocean sea surface temperature was positive anomaly at north and negative anomaly at south ),that summer monsoon precipitation decline to little of China.(11) Thermodynamic anomaly index of spring from north to south also have "+,-,+,-" correlation distribute model with July—August precipitation of East China and ex- winter and ex- spring key area and its index express notable remote correlation to East Asian monsoon precipitation.(12) Between of Stronger and weaker year different wind field of thermodynamic anomaly index of summer's north-south Pacific that express had barotropy anticyclone at middle-low level of troposphere and August had heat center at 200hPa over East Asian,that structure have advantageous push toward northerly of summer monsoon;(13) While the thermodynamic anomaly index of preceding spring was strong had stronger eastwardly and southerly stream at 20°N,that advantageous push toward north from 20°N of summer monsoon.
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