CAJ | 학술논문

本文将热带印度洋10月份的大气风场和海洋上层流场看作一个整体,对其作了动力统计诊断,即作了复EOF分析,考察了其年际和年代际变化,并揭示其与印度洋偶极子(IOD)和ENSO的关系.结果表明:在同一模态中,海洋模态表现出很强的赤道俘获现象,而大气则无此现象;第一模态为印度洋偶极子模态;第二模态为ENSO前期在印度洋的延伸模态.前2个模态的风场都揭示了Walker环流异常的结构;印度洋海温的年际变化主要取决于印度洋地区的海气耦合状态,但太平洋的ENSO循环对其也有一定影响.
본문장열대인도양10월빈적대기풍장화해양상층류장간작일개정체,대기작료동력통계진단,즉작료복EOF분석,고찰료기년제화년대제변화,병게시기여인도양우겁자(IOD)화ENSO적관계.결과표명:재동일모태중,해양모태표현출흔강적적도부획현상,이대기칙무차현상;제일모태위인도양우겁자모태;제이모태위ENSO전기재인도양적연신모태.전2개모태적풍장도게시료Walker배류이상적결구;인도양해온적년제변화주요취결우인도양지구적해기우합상태,단태평양적ENSO순배대기야유일정영향.
The Complex EOF(CEOF)analysis was carried out in order to study the interannual and interdecadal variations of the coupled circulation of atmosphere and ocean in the tropieal Indian Ocean and unveil their relation-ship with the Indian Ocean dipole(IOD)and ENSO.The results show that:In the same mode,the anomalous cur-rent of ocean is equatorial-trapped,but the wind field has no such phenomena;the first mode has a close relationship with the IOD,the second mode counts much on ENSO;the atmosphere field of the first and second modes repre-sents the abnormal changes of Walker circulation;the interannual variation of the Indian Ocean's temperature lies mainly on the coupled state of atmosphere and ocean about the Indian Ocean,but the ENSO circulation of the Pacific Ocean also has some influence.