Skip to main content
Log in

A new hybrid models based on the neural network and discrete wavelet transform to identify the CHIMERE model limitation

  • Research Article
  • Published:
Environmental Science and Pollution Research Aims and scope Submit manuscript

Abstract

A greater understanding of ozone damage to the environment and health led to an increased demand for accurate predictions. This study provides two new accurate hybrid models of ozone prediction. The first one (CHIMERE-NARX) is based on a NARX model as a post-processing of the CHIMERE model. In the second (CHIMERE-NARX-DWT), a discrete wavelet transform (DWT) has been added. Our models were built and validated using ozone measurements from the Mediouna station in Casablanca, Morocco, from February 1st to March 27th, 2021. The results highlighted the CHIMERE model limitations, such as wind speed overestimation and insufficient emission data. The first hybrid successfully increased the correlation coefficient from 88 to 93% and reduced RMSE from 23.99 μg/m3 to −3.54 μg/m3, overcoming CHIMERE limitations to some extent, especially during nighttime. A second hybrid addressed the first hybrid limitation, such as using ozone as a single input. This hybrid successfully balanced the weight of NARX at night against the day, increasing the correlation coefficient to 98% and decreasing RMSE to −0.02 μg/m3. This study presents a new generation of post-processing based on deterministic model processes, with the possibility of training them with minimum input data, which can be applied to other models using various pollutants.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5.
Fig. 6
Fig. 7
Fig. 8.
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

Data availability

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

WHO:

World Health Organization

NOx:

Nitrogen oxides

ML:

Machine learning

CNN:

Convolutional neural network

DA:

Data assimilation

LSTM:

Long-short-term memory

CMAQ:

Community multiscale air quality

ANN:

Artificial neural network

DWT:

Discrete wavelet transform

LM:

Levenberg-Marquardt

RMSE:

Root means square error

CAMS:

Copernicus atmosphere monitoring service

EnKF:

Ensemble Kalman filter

VOC:

Volatile organic compounds

CTM:

Chemistry transport models

NN:

Neural network

MB:

Mean bias

CT:

Chi-square test

NARX:

Nonlinear auto-regressive network with exogenous inputs

NWP:

Numerical weather prediction

FFNNs:

Feed-forward neural networks

WRF:

Weather research forecasting

HPC:

High-performance calculator

LMD:

Laboratory of meteorology dynamic

AQF:

Air quality forecasting

AI:

Artificial intelligence

References

Download references

Acknowledgments

The Faculty of Science University IBN ZOHR supported this research in all its stages. We would like to thank warmly Ministry of Interior, especially the Department of Energy and Environment of the Souss Massa region, for their collaboration. We are grateful to the Dynamic Meteorology Laboratory (LMD) for its valuable assistance. The calculations for this simulation were done using the national HPC managed by the National Center of Scientific and Technological Research (CNRST) in Morocco. The authors are grateful to the staff of “HPC” in particular Ms. Bouchra RAHIM, Scientific Computing team leader, for her availability and assistance.

Author information

Authors and Affiliations

Authors

Contributions

Amine Ajdour, Anas Adnane, Brahim Ydir, Dris Ben hmamou: conceptualization, methodology, validation, writing, original draft, writing—review and editing. Kenza KHOMSI, Hassan AMGHAR, Youssef CHELHAOUI: data acquisition and validation, review and editing. Jamal CHAOUFI, Radouane LEGHRIB: direction, methodology, investigation—review and editing.

Corresponding author

Correspondence to Amine Ajdour.

Ethics declarations

Conflict of interest

The authors declare no competing interests.

Additional information

Responsible Editor: Marcus Schulz

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ajdour, A., Adnane, A., Ydir, B. et al. A new hybrid models based on the neural network and discrete wavelet transform to identify the CHIMERE model limitation. Environ Sci Pollut Res 30, 13141–13161 (2023). https://doi.org/10.1007/s11356-022-23084-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-022-23084-8

Keywords

Navigation