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Application of Wavelet Transform for Bias Correction and Predictor Screening of Climate Data

Author

Listed:
  • Aida Hosseini Baghanam

    (Department of Water Resources Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz 51666-16471, Iran)

  • Vahid Nourani

    (Department of Water Resources Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz 51666-16471, Iran
    Faculty of Civil and Environmental Engineering, Near East University, Nicosia 99138, Turkey
    College of Engineering, IT and Environment, Charles Darwin University, Darwin, NT 0909, Australia)

  • Ehsan Norouzi

    (Department of Water Resources Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz 51666-16471, Iran)

  • Amirreza Tabataba Vakili

    (Department of Water Resources Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz 51666-16471, Iran)

  • Hüseyin Gökçekuş

    (Faculty of Civil and Environmental Engineering, Near East University, Nicosia 99138, Turkey)

Abstract

Climate model (CM) statistical downscaling requires quality and quantity modifications of the CM’s outputs to increase further modeling accuracy. In this respect, multi-resolution wavelet transform (WT) was employed to determine the hidden resolutions of climate signals and eliminate bias in a CM. The results revealed that the newly developed discrete wavelet transform (DWT)-based bias correction method can outperform the quantile mapping (QM) method. In this study, wavelet coherence analysis was utilized to assess the high common powers and the multi-scale correlation between the predictors and predictand as a function of time and frequency. Thereafter, to rate the most contributing predictors based on potential periodicity, the average variance was calculated, which is named the Scaled Average (SA) measure. Consequently, WT along with Artificial Neural Network (ANN) were applied for bias correction and identifying the dominant predictors for statistical downscaling. The CAN-ESM5 data of Canadian climate models and INM-CM5 data of Russian climate models over two climatic areas of Iran with semi-arid (Tabriz) and humid (Rasht) weather were applied. The projection of future precipitation revealed that Tabriz will experience a 3.4–6.1% decrease in precipitation, while Rasht’s precipitation will decrease by 1.5–2.5%. These findings underscore the importance of refining CM data and employing advanced techniques to assess the potential impacts of climate change on regional precipitation patterns.

Suggested Citation

  • Aida Hosseini Baghanam & Vahid Nourani & Ehsan Norouzi & Amirreza Tabataba Vakili & Hüseyin Gökçekuş, 2023. "Application of Wavelet Transform for Bias Correction and Predictor Screening of Climate Data," Sustainability, MDPI, vol. 15(21), pages 1-19, October.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:21:p:15209-:d:1266126
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    References listed on IDEAS

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    1. Tolera Abdissa Feyissa & Tamene Adugna Demissie & Fokke Saathoff & Alemayehu Gebissa, 2023. "Evaluation of General Circulation Models CMIP6 Performance and Future Climate Change over the Omo River Basin, Ethiopia," Sustainability, MDPI, vol. 15(8), pages 1-37, April.
    2. Nam Do Hoai & Keiko Udo & Akira Mano, 2011. "Downscaling Global Weather Forecast Outputs Using ANN for Flood Prediction," Journal of Applied Mathematics, Hindawi, vol. 2011, pages 1-14, March.
    3. Chotirose Prathom & Paskorn Champrasert, 2023. "General Circulation Model Downscaling Using Interpolation—Machine Learning Model Combination—Case Study: Thailand," Sustainability, MDPI, vol. 15(12), pages 1-24, June.
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    1. Emna Trabelsi, 2024. "COVID-19 and Uncertainty Effects on Tunisian Stock Market Volatility: Insights from GJR-GARCH, Wavelet Coherence, and ARDL," JRFM, MDPI, vol. 17(9), pages 1-52, September.

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