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Title: | Estimation of Hourly Photo Synthetically- Active Radiation (PAR) From Hourly Global Solar Radiation (GSR) In Jos, Nigeria |
Authors: | Anjorin, O.F Utah, E.U Likita, M.S |
Keywords: | Second k, model. |
Issue Date: | 2014 |
Publisher: | Asian Review of Experimental and Earth Sciences |
Series/Report no.: | Vol.1;No.2;Pp 43-50 |
Abstract: | In this work, an hourly model was used in estimating the values of Photo-synthetically
Active Radiation (PAR); a parameter closely related to plant growth in Jos, Nigeria
(Latitude 90 57’ N, Longitude 8053’E ) and Altitude 1153m asl.) from hourly Global
Solar Radiation Rs and to predict its hourly (PAR) daily seasonal trend. For this purpose,
three years (2003, 2004 and 2005) data recorded using Gunn-Bellani Radiation
Integrator at the weather observatory station of Geography and Planning Department of
the University of Jos was used. The trend of variation of the mean hourly PAR P Q
shows that the maximum was obtained at 12.00p.m. P Q for the raining season months of
June, July and August for year 2003 are respectively 3.176 EmJ-1, 2.900 EmJ-1 and 2.960
EmJ-1 while that of the dry season months of November, December and January for the
same year are respectively 3.871EmJ-1, 3.997 EmJ-1 and 3.655EmJ-1. Also, there exists
seasonal variation in the average predicted value of the hourly global PAR; two maxima
occurred- major at February and March and the minor at November and December. The
trend of variation of hourly QP/RS (μEJ-1) for the year 2003, 2004, and 2005 with local
time shows maximum values at noon for the months considered. The ratio is lower and
more variable in wet season than in dry season, and is usually higher at noon. |
URI: | http://hdl.handle.net/123456789/492 |
ISSN: | 2313-8173 |
Appears in Collections: | Science Laboratory Technology
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