Relationships between anomalous summer precipitation in Yingkou and preliminary ocean-atmosphere circulation characteristics during recent 50 years

Based on the summer precipitation in Yingkou from 1951 to 2000 and preliminary 500hPa contour field as well as ocean temperature in North Pacific Ocean,the characteristics of 500hPa contour fields of preliminary autumn season(from September to November),winter season (from December to February)and ocean temperature field as well as circulation field in anomalous summer years were analyzed.The results indicated that the ocean temperatures in preliminary autumn season and winter season had close relationships with summer precipitations.