Chinese Journal of Polar Research

ADVANCES IN POLAR SCIENCE ›› 2004, Vol. 15 ›› Issue (2-English): 143-148.

• Contents • Previous Articles    

Climate anomalies in the southern high latitudes associated with the Subtropical Dipole Mode

 Liu Na1,2, Liu Lin1,2, Chen Hongxia2, Zhang Qinghua2 and Pan Zengdi3   

  1. 1 College of Physical and Environmental Oceanography, Chinese Ocean University, Qingdao 266003, China;
    2 Laboratory of Marine Science and Numerical Modeling, the First Institute of Oceanography, Qingdao 266061, China;
    3 Polar Research Institute of China, Shanghai 200129, China
  • Online:1954-06-30 Published:1954-06-30
  • Contact: Liu Na

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Abstract:

Climate anomalies in the southern high latitude associated with the Subtropical Dipole Mode (SDM) are investigated using a 23-year database consisting of SLP (sea level pressure), surface air temperature (SAT) and sea surface temperature (SST). The analysis depicts, for the first time, the spatial variability in the relationship of the above variables with the Subtropical Dipole Mode Index (SDI). It suggests that the SDM signal exists in the southern high latitudes and the correlation fields exhibit a wavenumber-3 pattern around the circumpolar Southern Ocean. Lead-lag correlation analysis used to the SLP, SAT, and SST anomalies with the SDI time series at the positive and negative correlation extremes shows that the southern-high-latitude climate responses to SDM almost instantaneously proposing the connection is by atmospheric and not by oceanic propagation.

Key words: southern high latitudes, climate anomaly, subtropical Dipole mode