东亚冬季风异常与全球大气环流变化 Ⅱ.冬季风异常对全球热带海温变化的影响

Eastern Asian Winter Monsoon Anomaly and Variation of Global Circulation Part Ⅱ: Influence on SST by Winter Monsoon

作为冬季风研究系列中的第Ⅱ部分，首先对第Ⅰ部分中的强弱冬季风个例所对应的海温状况进行对比研究。然后，利用中国气象局的４６年历史资料挑选出多个强弱冬季风个例进行合成分析，以进一步探讨个例分析中的一些主要结果。最后，引用奇异值分解方法来诊断分析冬季风异常对海温的影响。分析结果表明：冬季风异常不但造成了同期大尺度环流形势的差异，而且对后期环流和天气状况也有较大的影响；环流异常的持续性与海温异常的持续性密切相关，海温可能是维持这种持续异常的中介，它在冬夏季环流的隔手相关中起了重要的作用。

it is the second part of a series of studies on the winter monsoon. Firstly the difference ofSST in a strong winter monsoon year (1986) and a weak one (1980) chosen from Part Ⅰ is compared.Then, a composite study, based on seven cases both for strong and weak winter monsoon years, is madeto further illustrate the results obtained from the case study. Finally, the SVD method is introduced toinvestigate the relationship, simultaneously and lagged, between the winter monsoon and the sea surfacetemperature anomaly. The main results show that f the East Asian Winter Monsoon anomaly not onlyresults in the difference of the circulations in winter, but also affects the circulations and weather in thefollowing seasons. The persistence of the winter monsoon anomaly is well relative to that of SSTA. Thesea surface temperature seems to play a medium role in the interseasonal connection.