en اپتیک اتمسفر و دریا Atmospheric Optics and Remote Sensing پژوهشي Research <strong><span lang="EN-GB" style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">The value of ozone absorption cross section (OACS) is a key parameter used in the configuration of gas sensors. Sadly, the variations of certain parameters among others such as temperature, pressure, and optical path-length in a given spectrum can affect the values of OACS. As a result, there have been several discrepancies in the value of OACS. Recently, the simultaneous effects of optical path-length were investigated in the visible spectrum. Hence, there is the need to also carry out the same investigation in the UV spectrum.&nbsp; So, in this paper, we have reported the combined variation effects of temperature (100 <i>K</i>&ndash;350 <i>K</i>), and optical path-length (0.75 cm&ndash;130 cm) on OACS in the UV spectrum. We used the method of optical absorption spectroscopy as deployed in a model software called Spectralcalc. The software comprising the HITRAN12 latest line list was used to simulate OACS values. </span></span><span style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">Simulated results were obtained using the latest available line list on the HITRAN12 Spectralcalc simulator</span></span><span style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">. Our obtained results were slightly different from those reported for the visible spectrum but followed a similar trend, in that it showed a decrease in the OACS with an increase in the temperature from 100 <i>K</i> to 350 <i>K</i> at 279.95 nm<i> </i>and 257.34 nm<i> </i>by 1.09<i> % </i>and<i> </i>1.43<i> % </i>respectively. While optical path-length had zero effect on it. We, therefore, conclude that at constant pressure, OACS depends on both temperature and absorption wavelength but not on optical path-length. The analysis reported in this work only seeks to address the differences in the OACS relative to temperature in the UV spectrum. So, the results obtained in this paper can be used to optimally configure ozone gas sensors to obtain an accurate measurement.</span></span></strong> Absorption cross section, absorption spectroscopy, optical path-length, ozone gas, temperature, UV. 227 236 http://ijop.ir/browse.php?a_code=A-10-859-1&slc_lang=en&sid=1 Patrick Enenche Patrickenenche20@gmail.com 10031947532846003926 10031947532846003926 No Department of Telecommunication Engineering, Federal University of Technology Minna, Nigeria. Michael David mikeforheaven@futminna.edu.ng 10031947532846003927 10031947532846003927 No Department of Telecommunication Engineering, Federal University of Technology Minna, Nigeria. Caroline Alenoghena carol@futminna.edu.ng 10031947532846003928 10031947532846003928 No Department of Telecommunication Engineering, Federal University of Technology Minna, Nigeria. Supreme Okoh okoh@ieee.org 10031947532846003929 10031947532846003929 Yes Department of Telecommunication Engineering, Federal University of Technology Minna, Nigeria.