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Multi-step forecasting of the Philippine storm frequencies using Poisson neural network

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Abstract

The paper aims to forecast the Philippine storm frequencies using nonlinear Poisson autoregressive model with exogenous variables. The nonlinearity is defined by its kernel which is an artificial neural network (ANN) with one hidden layer and two output neurons, and is trained to simultaneously forecast two semesters ahead for a given input. Furthermore, the covariates studied were the Average Sea Surface Temperatures in the NINO3.4 region (5− 5S,170− 120W) and the Average Sea Surface Temperatures in the eastern pole (0− 10S,90− 110E) of the Dipole Mode Index. The data, taken from the Japan Meteorological Agency’s Regional Specialized Meteorological Center with time points running from 1950 to October 2021, is modeled at a semester-level granularity. The estimation is done using maximum likelihood estimation by minimizing the negative log-likelihood function. Furthermore, Bayesian hyper-parameter optimization was used to tune the model across different activation functions, number of hidden neurons, training optimizers, and train and validation splits. Lastly, the best model from the hyper-parameter optimization was then compared to univariate Poisson autoregressive model (and its Bayesian counterpart) and Negative Binomial Autoregressive model. The proposed model captures well the characteristics of the data both in terms of the point forecast and the associated uncertainties.

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The RSMC Best Track Data can be downloaded here: https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/besttrack.html

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Acknowledgements

The author would like to acknowledge the reviewers for their valuable comments and suggestions which have helped in improving the paper.

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All authors contributed to the study conception and design. All authors read and approved the final manuscript.

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Correspondence to Al-Ahmadgaid B. Asaad.

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Asaad, AA.B. Multi-step forecasting of the Philippine storm frequencies using Poisson neural network. Theor Appl Climatol 152, 293–305 (2023). https://doi.org/10.1007/s00704-023-04394-4

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  • DOI: https://doi.org/10.1007/s00704-023-04394-4

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