Acknowledgements

    Special thanks to T. W. Kwok for his help in developing the software package.

    The wavelet software was provided by C. Torrence and G. Complo and can be downloaded at:
    http://paos.colorado.edu/research/wavelets/.

    The cross wavelet and wavelet coherence software, in which some part of the software code is used in our partial wavelet coherence and multiple wavelet coherence software, was provided by G. Aslak is available at:
    http://www.pol.ac.uk/home/research/waveletcoherence.


    Should there be any enquiry, please feel free to contact:

    Eric K. W. Ng
    Email: E.Ng@my.cityu.edu.hk