Modeling of global horizontal irradiance in the United Arab Emirates with artificial neural networks

Hassan A.N. Hejase, Maitha H. Al-Shamisi, Ali H. Assi

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


This paper employs ANN (Artificial Neural Network) models to estimate GHI (global horizontal irradiance) for three major cities in the UAE (United Arab Emirates), namely Abu Dhabi, Dubai and Al-Ain. City data are then used to develop a comprehensive global GHI model for other nearby locations in the UAE. The ANN models use MLP (Multi-Layer Perceptron) and RBF (Radial Basis Function) techniques with comprehensive training algorithms, architectures, and different combinations of inputs. The UAE models are tested and validated against individual city models and data available from the UAE Solar Atlas with good agreement as attested by the computed statistical error parameters. The optimal ANN model is MLP-based and requires four mean daily weather parameters; namely, maximum temperature, wind speed, sunshine hours, and relative humidity. The computed statistical error parameters for the optimal MLP-ANN model in relation to the measured three-cities mean data (referred to as UAE data) are MBE (mean bias error) = -0.0003 kWh/m2, RMSE=0.179 kWh/m2, R2=99%, NSE (Nash-Sutcliffe model Efficiency coefficient)=99%, and t-statistic=0.005 at 5% significance level. Results prove the suitability of the ANN models for estimating the monthly mean daily GHI in different locations of the UAE.

Original languageEnglish
Pages (from-to)542-552
Number of pages11
Publication statusPublished - Dec 1 2014


  • Artificial neural network
  • Estimation
  • Global horizontal irradiance
  • Multilayer perceptron
  • Radial basis function
  • United Arab Emirates

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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