Interannual variability of the South China Sea in a data assimilation model

Chau Ron Wu, C. W.June Chang

研究成果: 雜誌貢獻文章

46 引文 斯高帕斯(Scopus)

摘要

Sea surface height (SSH) variations in the South China Sea are examined using results from a data assimilation model. After the SSH data have had the annual cycle removed, principal component analysis illustrates two distinct anomaly patterns. The first mode, strongest off Vietnam, would affect the basin-wide gyre intensity. The second mode consists of a meridional dipole feature with a nodal line around 12°N and is related to the development of the eastward jet and upwelling off Vietnam. Both EOF modes have significant interannual variations and are highly correlated to the ENSO events. The leading phase of mode 2 coefficient provides preliminary evidence for the air-sea interaction and the Pacific-East Asian teleconnection. An innovative mechanism is proposed to describe a weakened upwelling off Luzon in winter 1998. An extra-strong basin-wide warming in summer 1998 persists into fall and winter, preventing the formation of winter upwelling off Luzon in that year.

原文英語
文章編號L17611
頁(從 - 到)1-4
頁數4
期刊Geophysical Research Letters
32
發行號17
DOIs
出版狀態已發佈 - 2005 九月 16

    指紋

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

引用此