Result shows that the MOD is significantly related to the atmospheric features in the previous winter with strong North Atlantic oscillation(NAO) for early Meiyu onset and v. v. .

• 研究结果表明江淮入梅的早晚与前期冬季北半球大型环流存在显著的相关：入梅早的年份，其前期冬季北大西洋涛动强，北半球只有一个强的极涡并位于格陵兰上空，相应东亚大槽弱；