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Chinese Journal of Oceanology and Limnology

, Volume 24, Issue 2, pp 125–128 | Cite as

Southern high latitude climate anomalies associated with the Indian Ocean dipole mode

  • Liu Na
  • Jia Zhen
  • Chen Hongxia
  • Hua Feng
  • Li Yunfang
Physics

Abstract

Using a 23-year database consisting of sea level pressure, surface air temperature and sea surface temperature, the authors studied southern high latitude climate anomalies associated with IOD (Indian Ocean Dipole). Correlation analysis of the spatial variability regarding monthly sea level pressure, surface air temperature, and sea surface temperature anomalies with IOD index suggests that IOD signal exists in southern high latitudes. The correlation fields exhibit a wavenumber-3 pattern around the circumpolar Southern Ocean. Lead-lag correlation analysis on the strongest correlation areas with IOD index shows that IOD in the tropical Indian Ocean responses to the southern high latitude climate almost instantaneously. It is proposed in the present paper that this connection is realized through atmospheric propagation rather than through oceanic one.

Key words

southern high latitudes climate anomaly Indian Ocean dipole mode 

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Copyright information

© Science Press 2006

Authors and Affiliations

  • Liu Na
    • 1
    • 2
  • Jia Zhen
    • 2
    • 1
  • Chen Hongxia
    • 2
  • Hua Feng
    • 2
  • Li Yunfang
    • 1
  1. 1.Ocean University of ChinaQingdaoChina
  2. 2.Laboratory of Marine Science and Numerical Modeling, First Institute of OceanographySOAQingdaoChina

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