Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model
Solar radiation is an important geological and meteorological parameter. In most developing countries, data is readily unavailable owing to lack of instrumentation and skilled personnel. In this study, Global solar radiation (GSR) over Ghana has been quantified using the Ångström–Prescott sunshine m...
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doaj-b707ae31f3434c78a2932ff2b34f6f5d2020-11-24T20:44:10ZengElsevierScientific African2468-22762019-07-014Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration modelPrince Junior Asilevi0Emmanuel Quansah1Leonard Kofitse Amekudzi2Thompson Annor3Nana Ama Browne Klutse4School of the Environment and Safety Engineering, Jiangsu University, P.R. China; Department of Physics, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana; Corresponding author.Department of Physics, Kwame Nkrumah University of Science and Technology, Kumasi, GhanaDepartment of Physics, Kwame Nkrumah University of Science and Technology, Kumasi, GhanaDepartment of Physics, Kwame Nkrumah University of Science and Technology, Kumasi, GhanaDepartment of Physics, University of Ghana, Legon, Accra, GhanaSolar radiation is an important geological and meteorological parameter. In most developing countries, data is readily unavailable owing to lack of instrumentation and skilled personnel. In this study, Global solar radiation (GSR) over Ghana has been quantified using the Ångström–Prescott sunshine model with sunshine duration data from 22 synoptic stations distributed across the country's ecological zones. The simulated data was gridded at 10 km by 10 km, establishing the spatial distribution of solar radiation over the country. Comparison with satellite data showed good results with root mean square error (RMSE) values of 1–5 MJm−2day−1 and correlation coefficient of 60 - 66%. Meanwhile, the estimated total GSR over the country was found to be 412.82 MJm−2day−1. The savanna zone had the maximum estimated total monthly mean GSR for the year, with the highest value of 20.76 MJm−2day−1 in Navrongo. The forest zone had the minimum estimated total annual mean GSR, with the lowest radiation level in Oda (17.11 MJm−2day−1). A maximum and minimum mean clearness index of 0.59 and 0.48 respectively are estimated, implying that about 53% of solar radiation at the top of the atmosphere reaches the study area after attenuation. The satellite data has a total monthly mean horizontal Global Solar irradiance of 366.62 MJm−2day−1. The study shows that the region is a potential field to harness and optimize solar energy for the operation of photovoltaic systems and solar collectors for industrial and domestic applications. Keywords: Ångström–prescott, Sunshine duration model, Global solar radiation, and Griddinghttp://www.sciencedirect.com/science/article/pii/S2468227618304009 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Prince Junior Asilevi Emmanuel Quansah Leonard Kofitse Amekudzi Thompson Annor Nana Ama Browne Klutse |
spellingShingle |
Prince Junior Asilevi Emmanuel Quansah Leonard Kofitse Amekudzi Thompson Annor Nana Ama Browne Klutse Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model Scientific African |
author_facet |
Prince Junior Asilevi Emmanuel Quansah Leonard Kofitse Amekudzi Thompson Annor Nana Ama Browne Klutse |
author_sort |
Prince Junior Asilevi |
title |
Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model |
title_short |
Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model |
title_full |
Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model |
title_fullStr |
Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model |
title_full_unstemmed |
Modeling the spatial distribution of Global Solar Radiation (GSR) over Ghana using the Ångström-Prescott sunshine duration model |
title_sort |
modeling the spatial distribution of global solar radiation (gsr) over ghana using the ångström-prescott sunshine duration model |
publisher |
Elsevier |
series |
Scientific African |
issn |
2468-2276 |
publishDate |
2019-07-01 |
description |
Solar radiation is an important geological and meteorological parameter. In most developing countries, data is readily unavailable owing to lack of instrumentation and skilled personnel. In this study, Global solar radiation (GSR) over Ghana has been quantified using the Ångström–Prescott sunshine model with sunshine duration data from 22 synoptic stations distributed across the country's ecological zones. The simulated data was gridded at 10 km by 10 km, establishing the spatial distribution of solar radiation over the country. Comparison with satellite data showed good results with root mean square error (RMSE) values of 1–5 MJm−2day−1 and correlation coefficient of 60 - 66%. Meanwhile, the estimated total GSR over the country was found to be 412.82 MJm−2day−1. The savanna zone had the maximum estimated total monthly mean GSR for the year, with the highest value of 20.76 MJm−2day−1 in Navrongo. The forest zone had the minimum estimated total annual mean GSR, with the lowest radiation level in Oda (17.11 MJm−2day−1). A maximum and minimum mean clearness index of 0.59 and 0.48 respectively are estimated, implying that about 53% of solar radiation at the top of the atmosphere reaches the study area after attenuation. The satellite data has a total monthly mean horizontal Global Solar irradiance of 366.62 MJm−2day−1. The study shows that the region is a potential field to harness and optimize solar energy for the operation of photovoltaic systems and solar collectors for industrial and domestic applications. Keywords: Ångström–prescott, Sunshine duration model, Global solar radiation, and Gridding |
url |
http://www.sciencedirect.com/science/article/pii/S2468227618304009 |
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