<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Analyses based on precipitation data may be limited by the quality of the data, the size of the available historical series and the efficiency of the adopted methodologies; these factors are especially limiting when conducting analyses at the daily scale. Thus, methodologies are sought to overcome these barriers. The objective of this work is to develop a hybrid model through the maximum overlap discrete wavelet transform (MODWT) to estimate daily rainfall in homogeneous regions of the Tocantins-Araguaia Hydrographic Region (TAHR) in the Amazon (Brazil). Data series from the Climate Prediction Center morphing (CMORPH) satellite products and rainfall data from the National Water Agency (ANA) were divided into seasonal periods (dry and rainy), which were adopted to train the model and for model forecasting. The results show that the hybrid model had a good performance when forecasting daily rainfall using both databases, indicated by the Nash–Sutcliffe efficiency coefficients (0.81–0.95), thus, the hybrid model is considered to be potentially useful for modelling daily rainfall.</p></abstract>

Analyses based on precipitation data may be limited by the quality of the data, the size of the available historical series and the efficiency of the adopted methodologies; these factors are especially limiting when conducting analyses at the daily scale. Thus, methodologies are sought to overcome these barriers. The objective of this work is to develop a hybrid model through the maximum overlap discrete wavelet transform (MODWT) to estimate daily rainfall in homogeneous regions of the Tocantins-Araguaia Hydrographic Region (TAHR) in the Amazon (Brazil). Data series from the Climate Prediction Center morphing (CMORPH) satellite products and rainfall data from the National Water Agency (ANA) were divided into seasonal periods (dry and rainy), which were adopted to train the model and for model forecasting. The results show that the hybrid model had a good performance when forecasting daily rainfall using both databases, indicated by the Nash–Sutcliffe efficiency coefficients (0.81–0.95), thus, the hybrid model is considered to be potentially useful for modelling daily rainfall.

Daily rainfall estimates considering seasonality from a MODWT-ANN hybrid model

Federal University of Pará – PPGEC/ITEC/UFPA

Federal University of Pará – FAESA/ITEC/UFPA

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Daily rainfall estimates considering seasonality from a MODWT-ANN hybrid model"}

Analyses based on precipitation data may be limited by the quality of the data, the size of the available historical series and the efficiency of the adopted...

Daily rainfall estimates considering seasonality from a MODWT-ANN hybrid model

Published Online: Jan 26, 2021

Page range: 13 - 28

Received: Jan 15, 2020

Accepted: Nov 13, 2020

DOI: https://doi.org/10.2478/johh-2020-0043

Keywords
Artificial Intelligence, Climate Prediction Center morphing, Dry and rainy periods, Amazon

© 2021 Evanice Pinheiro Gomes et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Daily rainfall estimates considering seasonality from a MODWT-ANN hybrid model

Published Online: Jan 26, 2021

Page range: 13 - 28

Received: Jan 15, 2020

Accepted: Nov 13, 2020

DOI: https://doi.org/10.2478/johh-2020-0043

KeywordsArtificial Intelligence, Climate Prediction Center morphing, Dry and rainy periods, Amazon

© 2021 Evanice Pinheiro Gomes et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Artificial Intelligence, Climate Prediction Center morphing, Dry and rainy periods, Amazon