Eman Fouad El-Said El-Nobi
South Valley University, Egypt
Title: Erythemal UV dose rate spatial distribution using ozone monitoring instrument satellite data over Egypt
Biography
Biography: Eman Fouad El-Said El-Nobi
Abstract
The spatial distribution of Erythemal Ultraviolet Dose Rate (EUV) at noon in mW/m2 observations derived from the Ozone Monitoring Instrument (OMI) are presented over Egypt covering the geographical domain (22.5°–31.5°N, 25.5°–35.5°E) during twelve year from 2005 to 2015. In the frame of the variability, Egypt was considered as an average area (one pixel); the box-whisker plots were created for average monthly and annual values of EUV. The monthly mean of EUV values are lower in the winter months (December to February) 116.17±2.30 mW/m2 compared to those in the summer months (June to August) 282.36±2.87 mW/m2. The annual mean of EUV values are lower in 2015 (204.15±60.41 mW/m2) and higher in 2013 (213.13±60.34 mW/m2). For the purpose of mapping contour, with a spatial resolution of 1°×1°, 104 pixels, the results illustrated by monthly, seasonally and all period contour maps indicate high similarity of EUV in all years. Finally comparisons of ground-based measurement of Erythemal Ultraviolet Dose Rate (EUVpyr) using a UVB-1 pyranometer with Ultraviolet Dose Rate (EUVomi) from OMI satellite data have been examined in Qena, Upper Egypt (26° 16` N, 32° 75` E, 96 m asl) at noontime in mW/m2. The examination revealed an overestimation of EUVomi, on deviation average by 13.37±11%, within the period of study from 2006 to 2015 (except 2011-2012).
