Dr. Xiaofei Pang Profile

Dr. Xiaofei Pang

at Chengdu Univ of Information Technology

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Proceedings Article | 20 October 2022 Paper

Research on noise reduction combined model for short-term precipitation forecast

Xiaofei Pang

Proceedings Volume 12350, 123500A (2022) https://doi.org/10.1117/12.2652365

KEYWORDS: Data modeling, Atmospheric modeling, Meteorology, Denoising, Temperature metrology, Autoregressive models, Data hiding, Climatology, Environmental sensing, Statistical modeling

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In order to improve the forecast accuracy of daily rainfall, it is convenient for flood control departments to make decisions. Under the condition of abundant meteorological data, a combined BiLSTM precipitation forecast model based on denoising autoencoder is proposed. The combined model is mainly used for training and prediction through noise reduction of input data, feature extraction and distinguishing the importance of meteorological information. The model uses 19 meteorological factors related to daily precipitation (including 20 to 20 hours' cumulative precipitation) as input vector, and the next 24 hours' precipitation as output vector. The results show that the model has the best prediction performance with root mean square error of 13.04 to about 15.18mm in the study area except for the three stations closest to the sea. The three cities closest to the sea in the study area have achieved the best prediction results by using the DBNPF model, and the root mean square error is 17.83 to about 18.95mm. The experimental results show that the combined model proposed in this paper is feasible and provides a new idea for daily rainfall prediction.

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