Theoretical and Applied Climatology

, Volume 41, Issue 1–2, pp 55–61 | Cite as

On the crosscorrelation between drought indices and solar activity

  • G. Padmanabhan
  • A. Ramachandra Rao


Crosscorrelation structure between solar activity and drought indices is investigated by analyzing the cross correlation of the residual time series of solar activity and drought indices. Double Sunspot Cycle, Zürich Sunspot number, Palmer's Drought Index and Drought Area Index data are used in the study. White residual series derived from the observed data series by using valid time series models are used for the crosscorrelation analysis. Weak correlations between solar activity and drought area indices are inferred. The lags of significant correlation appear to vary for the different time series used in the study.


Time Series Waste Water Water Pollution Crosscorrelation Solar Activity 
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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • G. Padmanabhan
    • 1
  • A. Ramachandra Rao
    • 2
  1. 1.Department of Civil EngineeringNorth Dakota Sate UniversityFargoUSA
  2. 2.School of Civil EngineeringPurdue UniversityWest LafayetteUSA

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