2009年3月
Decadal change in intraseasonal variability over the South China Sea
GEOPHYSICAL RESEARCH LETTERS
- ,
- ,
- 巻
- 36
- 号
- 開始ページ
- VOL. 36, L06810, 2009 doi: 10.1029/2009GL037174
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1029/2009GL037174
- 出版者・発行元
- AMER GEOPHYSICAL UNION
Evidence is presented to reveal a decadal change around mid-1990s in the behavior of intraseasonal variability (ISV) over the South China Sea (SCS). During 1979-1993, the ISV has a spectral peak around 64 days, which is longer than in the recent epoch of 1994-2007 (around 42 days). The ISV event in 1979-1993 involves a merging process of the northward and westward propagating convection anomalies over the western North Pacific. The ISV in 1994-2007 has no such a merging process but exhibits a tilted band structure extending from the northern Indian Ocean to the SCS, which is strongly connected to the equatorial eastward propagating Madden-Julian Oscillation. The merging process during 1979-1993 modified the ISV over the SCS, resulting in the prolonged period, enhanced convective activity and a weakened relationship with the eastward propagating MJO. The possible cause of this change is discussed. Citation: Kajikawa, Y., T. Yasunari, and B. Wang (2009), Decadal change in intraseasonal variability over the South China Sea, Geophys. Res. Lett., 36, L06810, doi: 10.1029/2009GL037174.
- リンク情報
- ID情報
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- DOI : 10.1029/2009GL037174
- ISSN : 0094-8276
- eISSN : 1944-8007
- Web of Science ID : WOS:000264679200004