Comparison of Solar UVA and UVB Radiation Measured in Selangor, Malaysia

The solar ultraviolet A (UVA) radiation data was measured at Physics Building, Universiti Kebangsaan Malaysia (2 degree 55' N, 101 degree 46' E, 50m asl) by the Xplorer GLX Pasco that connected to UVA Light sensor. The measured solar UVA data were compared with the total daily solar ultrav...

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Bibliographic Details
Published in:PERFIK2009 2009-12, Vol.1250, p.512-515
Main Authors: Kamaradin, S U, Gopir, G, Yatim, B, Sanusi, H, Megat Mahrnud, P S, Choo, P Y
Format: Article
Language:English
Subjects:
Correlation
Correlation coefficients
Earth surface
Metrology
Sensors
Ultraviolet
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Summary:The solar ultraviolet A (UVA) radiation data was measured at Physics Building, Universiti Kebangsaan Malaysia (2 degree 55' N, 101 degree 46' E, 50m asl) by the Xplorer GLX Pasco that connected to UVA Light sensor. The measured solar UVA data were compared with the total daily solar ultraviolet B (UVB) radiation data recorded by the Malaysian Metrological Department at Petaling Jaya, Malaysia (3 degree 06' N, 101 degree 39' E, 50m asl) for 18 days in year 2007. The daily total average of UVA radiation received is (298 plus or minus 105) kJm(-2) while the total daily maximum is (600 plus or minus 56) kJm(-2). From the analysis, it shows that the values of UVA radiation data were higher than UVB radiation data with the average ratio of 6.41% between 3-14%. A weak positive correlation was found (the correlation coefficient, r, is 0.22). The amount of UVA radiation that reached the earth surface is less dependence on UVB radiation and the factors were discussed.
ISSN:0094-243X