STREAMFLOW FORECASTING FOR THE DAM ORÓS/CE FROM HYDROMETEOROLOGICAL DATA USING PERCEPTRONS

• Published in: Revista Brasileira de Meteorologia
• Main Authors: Carla Beatriz Costa de Araújo, Silvrano Adonias Dantas Neto, Francisco de Assis Souza Filho
• Format: Article in Journal/Newspaper
• Language: English; Portuguese
• Published: Sociedade Brasileira de Meteorologia 2015
• Subjects: Redes neurais artificiais; Previsão de vazões; Açude Orós; Meteorology. Climatology; QC851-999; June River; Nash; Pacific; Weir; North Atlantic
• Online Access: https://doi.org/10.1590/0102-778620140048; https://doaj.org/article/d7e6e4cd9d114c7b945edab371ac1a09

The modeling of seasonal and interannual streamflow forecasting at northeastern Brazil represents a great relevance problem to the use and management of water resources; which demands greater prediction ability models. This is still a difficult task to solve due to the seasonal and interannual climate variability at the semi-arid region. This work presents the artificial neural networks (ANN) as an alternative for modeling the seasonal to interannual climate prediction,. For the development of this task the hydropraphic Oros weir Basin was chosen due to its importance as water resources in the State of Ceara. According to recent studies, the temperatures of the North Atlantic, South Atlantic and equatorial Pacific can be satisfactorily as predictors for the Northeast climate. The proposed model predicts, in July, the next rainy season (January to June) river flow regime. This time frame is of great relevance for the allocation of water resources. Among the studied models, those using the average temperature anomalies of April, May and June preceding the predicted year as input data showed the highest Nash-Suttcliffe efficiency (0.80).