Shah, Nor Hidayah Hisamuddin
(2013)
Study On Solar Ultraviolet
Erythemal Dose Distribution
Obtained By Aura Satellite Over
Peninsular Malaysia.
Masters thesis, Universiti Sains Malaysia.
Abstract
During the last 30 years, solar ultraviolet radiation (UV) has increased in
many parts of the world mainly at mid latitude region. The information on the total
of solar erythemal ultraviolet radiation incident on the earth surface is very important
for the safety of human health and other living things. For this research, the data
named OMUVBd retrieved from from Ozone Monitoring Instrument (OMI) that on
board AURA satellite has been taken to be studied. Measurement of erythemal UV
dose began in 1st January 2009 until 31st December 2009. The purposes of this study
are to view the distribution of solar erythemal dose over Peninsular Malaysia using
remote sensing data named OMUVBd and to differentiate this data with other
satellite data. The maximum daily erythemal UV dose for Peninsular Malaysia
appears in March with mean erythemal dose of 6330.78 J/m2 when solar zenith angle
at noon becomes zero. The average erythemal dose during the measurement period
was 5447.33 J/m2. The minimum erythemal dose was recorded on November with
4634.66 J/m2 due to Northeast monsoon that bring a thick clouds over study area.
Then OMUVBd has been compared and validates with other satellite data named
Offline Ultraviolet Product (OUV) covering 80 points all over Peninsular Malaysia
covering 80 points all over Peninsular Malaysia. In general, agreement between
OMUVBd and OUV data is good. The difference show that the mean absolute
difference for erythemal UV daily dose is 24.56 J/m2 meanwhile for mean relative
difference, mean bias of 0.01 J/m2.
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