在准两年尺度上ENS0与亚洲季风相互作用的研究

基金项目: 由国家自然科学基金项目(项目号49906003)资助

ON THE INTERACTION BETWEEN ENSO AND THE ASIANMONSOON IN THE SCALE OF QUASI-BIENNIAL OSCILLATION

1.
IM, PLA University of Science and Technology, Nanjing 211101, China
2.
Institue of Oceanology, The Chinese Academy of Science, Qingdao 266071, China
3.
Chinese Academy of Meteorological Sciences, Beijing 1000081, China

摘要: 对ENSO过程中的准两年振荡进行了诊断分析,并在此基础上分析了ENSO与亚洲季风的相互作用。结果表明:在准两年尺度上亚洲季风对ENSO循环有着十分明显的影响,这种影响主要通过亚洲冬季风爆发南下到热带西太平洋,激发出那里的强对流,进而影响到ENSO循环。这种现象不仅仅反映在准两年模态中,在实际亚洲冬季风的年际变化中也较突出。
- 准两年振荡 /
- ENSO /
- 季风 /
- 合成分析
Abstract: ENSO in the scale of quasi-biennial oscillation (QBO) is diagnostically analyzed in this paper. Then, the interaction between ENSO and the Asian monsoon is studied. The results show there are notable QBO in both ENSO and the Asian monsoon system. The Asian monsoon has quite remarkable influence on ENSO in the scale of QBO, which excites strong convection over the tropical west Pacific mostly through the Asian winter monsoon moving southward, and in turn influences ENSO cycle. The phenomenon is shown not only in the mode of QBO but also in the annual change of the Asian winter monsoon.
- quasi-biennial oscillation /
- ENSO /
- monsoon /
- composite analysis

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