ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

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Signal Detection of Global Climate Change and External Forcing Factors

HOU Zhangshuan, LI Xiaodong   

  1. Department of Geophysics, Peking University, Beijing, 100871
  • Received:1999-07-21 Online:2000-09-20 Published:2000-09-20

Abstract: The application of the B-spline wavelet analysis method to series of climate and external forcing factors is introduced. Using lag-correlation analysis method, interpretative variances analysis method, phrase comparing method to the wavelet analysis result, we not only gained the variation at different scales of the global temperature and El Nino signals, the location of the jump points and latent scale of these series, but also indicated the magnitude, extent of the effect of external forcing factors on them.