
Wavelet coherence between the winter Arctic Oscillation index and the sea ice extent in the Baltic.
A Matlab toolbox for performing cross wavelet and wavelet coherence analysis and is free for non-profit use.
Our paper describes the theory behind cross wavelet and wavelet coherence, starting from the basics of the Continuous Wavelet Transform: “Application of the cross wavelet transform and wavelet coherence to geophysical time series”.
References
Grinsted, A., Moore, J.C., Jevrejeva, S. (2004) Application of the cross wavelet transform and wavelet coherence to geophysical time series, Nonlin. Processes Geophys., 11, 561–566, https://doi.org/10.5194/npg-11-561-2004
Jevrejeva, S., Moore, J.C., Grinsted, A. (2003) Influence of the Arctic Oscillation and El Niño-Southern Oscillation (ENSO) on ice conditions in the Baltic Sea: The wavelet approach, J. Geophys. Res., 108(D21), 4677, https://doi.org/10.1029/2003JD003417
Torrence, C., Compo, G.P. (1998) A practical guide to wavelet analysis, Bull. Am. Meteorol. Soc., 79, 61–78, https://doi.org/10.1175/1520-0477(1998)079<0061:APGTWA>2.0.CO;2
Torrence, C., Webster, P. (1999) Interdecadal changes in the ENSO-Monsoon System, J.Clim., 12, 2679–2690, https://doi.org/10.1175/1520-0442(1999)012<2679:ICITEM>2.0.CO;2