DEVELOPMENT OF SUNSHINE BASED MODELS FOR ESTIMATING GLOBAL SOLAR RADIATION OVER KANO AND IKEJA, NIGERIA
DOI:
https://doi.org/10.33003/fjs-2022-0603-1001Keywords:
Coastal region, global solar radiation, meteorological parameters, Sahelian region, sunshine based models, validation indicatorsAbstract
In this present study, three (3) new sunshine based models were developed and evaluated using observed monthly average daily global solar radiation and sunshine hours meteorological variables spanning through thirty one years (1980-2010). The estimated global solar radiation values obtained from the empirical regression models for the developed models and nine (9) distinctive existing sunshine based models were compared through validation indicators of Mean Bias Error (MBE), Root Mean Square Error (RMSE), Mean Percentage Error (MPE), t – test, Nash – Sutcliffe Equation (NSE), Index of Agreement (IA) and coefficient of determination (R2) allowing the identification and recommendation of the most accurate model suitable for the estimation of global solar radiation in Kano and Ikeja located in the Sahelian and Coastal regions respectively. The results in this present study revealed that the developed exponent exponential and quadratic latitude 2 sunshine based models were found more appropriate for estimation of global solar radiation in Kano (Latitude 12.05 and Longitude 8.20 ) and Ikeja (Latitude 6.58 and Longitude 3.33 ) respectively. The evaluated existing linear (1st order) and quadratic (2nd order) sunshine based models for Kano were found more suitable for the estimation of global solar radiation as compared with those found through literature survey. The empirical regression equations and the values of the validation indicators obtained in this study for each model varies significantly in each of the regions under investigation indicating that the twelve (12) sunshine based models are site – specific. The correlation between the
References
REFERENCES
Allavena , A., and Rosseti, L., ( 1986). Micro – propagation of bean (Phaseolus vulgaris L), effect of genetic, epigenetic and environmental factors Scientia Horticulture, 30: 37 – 46.
Anand, R. P., Ganapathi, A., Vengadesan, G., Salvarege, N., Anbazhagan, V.R. and Kulothurgan, S. (2001). Plantr regeneration from immature cotyledon derived callus of Vigna ungugulata (L) Walp, Current Science Vol. 80 No. 5(10) pp. 671-684.
Badji,S. Mairone,Y. Meadin,G. Danhu,P. Neville,P. and Collonna,J.P.(1993). In vitro propagation of gum Arabic tree,Acassia Senegal (L) Wild. Plant cell report.12:629-633.
Brar, M.S., Alkhayri, J.M., Morelock, T.E., and Anderson, E.J. (1999). Genotypic response of cowpea Vigna unguiculata (L) to in vitro regeneration from cotyledon explants. In – vitro cellular Developmental Biology 35:8 – 12.
Chowrira, G., .Akella V, and. Luquin P.F, (1995). Transgenic grain legumes obtained by in planta electroporation mediated gene transfer. Molecular Biotechnology 5:85 – 96.
Christou , P. (1992). Genetic engineering and in – vitro culture of legumes. and Technomic Publishing Pennsylvania, USA P. 307.
Estrunch, J. J., Chriqur, D., Grossman, K., Shell, J. and Spenna, A. (1991). The plant oncogene ROLC is responsible for release of Cytokinin from Glycolytes. Embryogenesis 10:2889-2895.
Kanonowiez, A.K; K.T Cheah, ML Narasinham, L.L Murdock, P.M Hase gave (1997). Developing a transformation system for cowpea (Vigna uniquiculata(l) Walp) pages 361 – 371. In Advances in cowpea research, edited by B. B Singh and others IIIA Ibadan. Nigeria.
Khallafala,M.M., and Dafalla, H.M. (2008). In vitro micro-propagation and micro-grafting of Gum Arabic Tree (Acacia Senegal (L) Wild). International Journal For Sustainable Crop Production, 3: (1)19-27.
Machuka, I., Adesoye, A. and Obembe, O.O. (2002). Cowpea Regeneration in planta. Can it be coupled to transformation? P20 in abstract. World Cowpea research Conference 3.4-7 September 2000. Ibadan, Nigeria.
Monti, L.N., (1997). Opportunities biotechnology in cowpea. Plant Journal 6: 341 – 351.
Murashige, T. and Skoog, T., Thorpe, T.A., Vasil, I.K. (1962). Plant Tissue culture media. |In Vitro 12(7), 473-478.
Rao, I. and Lee, O. (1986) Green and non green callus induction from excised rice embryos. Effect of exogenous plant growth regulators PGR soci. AM Quat. 20:189 – 199
Rupp,H.M., Frank, M., Wenner,T.,Starnard,M. and Schmulling,T.(1999). Increased steady state mRNA Levels of the STM Knatti Honeodox genes in Cytokynins over producing Arabidopsis thaliana indicate a role For Cytokynin in the Shoot apical Meristem. Plant Journal 18:557-563.
Sahoo, A.Y. and Chand, R.K.(1998). Micro propagation of Vitex negundo (L.) a woody aromatic medicine Shrub through high frequency authillary shoot Propagation. Plant Cell Journal.18:301-307.
Singh, B. B. (1999). Breeding for improved quality IITA. Annual Report 1999, 11:31-32
Singh, B. B. (2000). Breeding cowpea varieties for wide adaptation by minimizing genotype & environmental interaction. Annual report 2000. 9:173-181.
Vengadesan, G., Ganapathi,A. Prem, A. and Ambazhageru,V. (2002). In vitro propagation of Acacia sinuata (lour) Merr via cotyledonary nodes. Agro forestry System. 55:9-15
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FUDMA Journal of Sciences