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Open AccessArticle

Performance of Using Cascade Forward Back Propagation Neural Networks for Estimating Rain Parameters with Rain Drop Size Distribution

by Siddi Tengeleng 1,2,3 and Nzeukou Armand 1,*
1
Laboratoire d'Ingénierie des Systèmes Industriels et de l'Environnement (LISIE), Institut Universitaire de Technologie Fotso Victor, Université de Dschang, P.O. Box 134, Bandjoun, Cameroun
2
Higher Institute of the Sahel, University of Maroua, P.O. Box 46, Maroua, Cameroon
3
Laboratory of Mechanics and Modelling of Physical Systems (L2MSP)-University of Dschang, Dschang, Cameroon
*
Author to whom correspondence should be addressed.
Atmosphere 2014, 5(2), 454-472; https://doi.org/10.3390/atmos5020454
Received: 27 December 2013 / Revised: 22 May 2014 / Accepted: 27 May 2014 / Published: 18 June 2014
(This article belongs to the Special Issue Cloud and Precipitation)
The aim of our study is to estimate the parameters M (water content), R (rain rate) and Z (radar reflectivity) with raindrop size distribution by using the neural network method. Our investigations have been conducted in five African localities: Abidjan (Côte d’Ivoire), Boyele (Congo-Brazzaville), Debuncha (Cameroon), Dakar (Senegal) and Niamey (Niger). For the first time, we have predicted the values of the various parameters in each locality after using neural models (LANN) which have been developed with locally obtained disdrometer data. We have shown that each LANN can be used under other latitudes to get satisfactory results. Secondly, we have also constructed a model, using as train-data, a combination of data issued from all five localities. With this last model called PANN, we could obtain satisfactory estimates forall localities. Lastly, we have distinguished between stratiform and convective rain while building the neural networks. In fact, using simulation data from stratiform rain situations, we have obtained smaller root mean square errors (RMSE) between neural values and disdrometer values than using data issued from convective situations. View Full-Text
Keywords: reflectivity; radar; water content; rain rate; artificial neural network reflectivity; radar; water content; rain rate; artificial neural network
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Tengeleng, S.; Armand, N. Performance of Using Cascade Forward Back Propagation Neural Networks for Estimating Rain Parameters with Rain Drop Size Distribution. Atmosphere 2014, 5, 454-472.

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