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Articles by Nurul Shazana Abdul Hamid
Total Records ( 1 ) for Nurul Shazana Abdul Hamid
  Ohoud Aljawi , Nurul Shazana Abdul Hamid , Wan Mohd Aimran Wan Mohd Kamil and Nor Sakinah Mohamad
  Background and Objective: Stratospheric ozone depletion, high skin cancer rates and increased public benefit have strong dem and for solar ultraviolet radiation measurements. This study aimed to characterize the broadband of solar UV spectral irradiance in Bangi, Malaysia. Apart from that, it also attempt to estimate the solar UV broadband radiation intensity with a utilization of establish mathematical model. Materials and Methods: Observation of broadband solar ultraviolet (UV) spectral irradiance 300-400 nm over fixed time interval between January, 2014 and July, 2015 have been measured and analyzed. The experimental measurements were obtained by using a portable Avantes Avaspec ULS 2048×64-USB2 spectrometer on horizontal surface at Universiti Kebangsaan Malaysia, in Bangi (2°55' N, 101°46' E and 50 m above sea level). The direct radiation measurement technique was acquired by pointing the sensor directly to the sun. The statistical test parameters such as root mean square error RMSE and mean bias error MBE have been used to test the accuracy of measured data. Results: The study reported that, the maximum recorded hourly average value of ultraviolet radiation intensity was 47.37 and 46.36 Wm–2 in month of July during the period 2014-2015, respectively, while the minimum value recorded 36.82 Wm–2 in month of November, 2014. In addition, the mathematical model results are comparable with measurement data for broadband solar ultraviolet intensity. The results were compared with the regions of Penang in Malaysia and Nakhon Pathom, Thailand. Conclusion: It was discovered that the variation of diurnal UV radiation is almost follows the same trend for all measured value at clear days. The statistical analysis of the present result also revealed that there is strong relationship between measured and estimated UV intensity, indicating the effectiveness of the measurement values.
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