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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 64-67 |
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Investigation of optical properties of aerosols in Urmia Lake area using Calitoo handheld sun-photometer. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :64-67
URL: http://opsi.ir/article-1-2528-en.html
URL: http://opsi.ir/article-1-2528-en.html
Abstract: (864 Views)
Sun-photometer is an optical tool for measuring the Aerosol Optical Depth, AOD and Ångström Exponent, AE. In this paper, measurements with Calitoo sun-photometer in Urmia city and Rashkan region, which has been done for six months, are reported. The measurement period started on November 1, 2020, and lasted until April 30, 2021. During this period, 117 days were measured. The average AOD at three wavelengths of 465, 540, and 619 nm and AE was equal to 0.25, 0.21, 0.18, and 1.08. Aerosols were classified based on AOD and AE. Results show that, in 85 days, AOD was equal to 0-0.7 also AE was equal to 0.7-1.7 (industrial urban pollution). For 12 days AOD was 0.2-1.5, and AE was 0-0.7 (dust). For another 12 days, AOD was 0-0.2 also AE was 0-0.7 (mixed dust). Only in two days, AOD was 0-0.2 also AE was 1.7-2 (clear air).
Type of Study: Experimental |
Subject:
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