What question did this study set out to answer?

The central aim is to evaluate convectively coupled equatorial waves in limited-length datasets using a combined FFT-wavelet method.

January 25, 2026Open Access

The Evaluation of Convectively Coupled Waves in Limited-Length Datasets

Key Points

The central aim is to evaluate convectively coupled equatorial waves in limited-length datasets using a combined FFT-wavelet method.
Utilized a combined FFT-wavelet approach for analyzing wave data.
Pre-processed datasets for accurate transformation and analysis.
Implemented comparison between Python and Fortran versions of the method.
Identified key characteristics and behaviors of convectively coupled equatorial waves.
Demonstrated multiscale behavior associated with the Madden-Julian Oscillation.

Abstract

Combined FFT-Wavelet method for Convectively Coupled Equatorial Waves (CCEWs) Created by: Chang Xu chang. xu8@unsw. edu. au 2025 References: Kikuchi, K. , and B. Wang (2010). Spatiotemporal Wavelet Transform and the Multiscale Behavior of the Madden–Julian Oscillation. Journal of Climate. 23, 3814–3834. https: //doi. org/10. 1175/2010JCLI2693. 1. Kikuchi, K. (2014). An introduction to combined Fourier–wavelet transform and its application to convectively coupled equatorial waves. Climate Dynamics. 43, 1339–1356. https: //doi. org/10. 1007/s00382-013-1949-8 The corresponding Fortran code comes from: http: //iprc. soest. hawaii. edu/users/kazuyosh Functions in pre-processing data come from Alejandro Jaramillo's wk-package: https: //github. com/mmaiergerber/wkₛpectra Thanks for the help from Qin Jiang in comparing and correcting the python version of the CFWT with the original Fortran version.

The Evaluation of Convectively Coupled Waves in Limited-Length Datasets

Key Points

Abstract

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