| INDIAN OCEAN DIPOLE AND ITS RELATIONSHIP WITH ENSO MODE |
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| 作者姓名： | 穆明权 李崇银 |
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| 作者单位： | LASG Institute of Atmospheric Physics.Chinese Academy of Sciences，Beijing 100029，LASG，Institute of Atmospheric Physics.Chinese Academy of Sciences，Beijing 100029 |
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| 基金项目： | This work was supported jointly by National Key Programme for Developing Basic Sciences(G1998040900-part 1)in China and Chinese Academy of Sciences under Grant KZCX 2-SW-210. |
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| 摘 要： | Near 100-year observed data sets are analyzed, and the results show that the variation of seasurface temperature(SST)in the equatorial Indian Ocean has a feature as a dipole oscillation.Thesituation of the dipole oscillation mainly shows the positive phase pattern(higher SST in the westand lower SST in the east than normal)and the negative phase pattern(higher SST in the east andlower SST in the west).The amplitude of the positive phase is larger than that of the negativephase.The dipole is stronger in September—November and weaker in January—April than inother months.It principally shows obviously inter-annual(4—5 year period)and inter-decadalvariation(25—30 year period).Although the Indian Ocean dipole in the individual year seems tobe independent of ENSO in the equatorial Pacific Ocean,in general,the Indian Ocean dipole hasobviously negative correlation with the Pacific Ocean “dipole”(similar to the inverse phase ofENSO).The atmospheric zonal(Walker) circulation is fundamental for relating the two dipoles toeach other.
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INDIAN OCEAN DIPOLE AND ITS RELATIONSHIP WITH ENSO MODE |
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| MU Mingquan LI Chongyin LASG.INDIAN OCEAN DIPOLE AND ITS RELATIONSHIP WITH ENSO MODE[J].Acta Meteorologica Sinica,2002(4). |
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| Authors: | MU Mingquan LI Chongyin LASG |
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| Institution: | MU Mingquan LI Chongyin LASG,Institute of Atmospheric Physics.Chinese Academy of Sciences,Beijing 100029 |
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| Abstract: | |
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| Keywords: | the Indian Ocean dipole the Pacific Ocean dipole(the inverse ENSO mode) Walker ciculation |
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