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ICOP & ICPET 2018, 24 - : 377-380 Back to browse issues page
Investigation of Atmospheric Aerosols Over the Urmia Lake using CALIPSO space-borne Lidar
Fatemeh Ghomashi * 1, Hamid R. Khalesifard 1
1- Department of Physics and Center for Research in Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS)
Abstract:   (98 Views)

The Urmia Lake in Northwest Iran is one of the largest permanent hypersaline lakes in the world. In recent decades, the lake suffers from a severe drought scenario. Comparing to the year 1995, the lake area has been dried by around 88% and this left a bed of salt around the lake and it can disperse significant amount of aerosols (dust and salt) into the atmosphere while the wind is blowing in the region. We use the recordings of the CALIPSO satellite to investigate the seasonal variations of atmospheric aerosols over the lake. For this purpose, we select integrated attenuated backscatter (IAB) and aerosol optical depth (AOD) that calculated for 532 nm. Daily values of IAB and AOD, show a significant distinction between aerosols over the Urmia Lake from its environs, especially during summer season. Also, the highest average amount of AOD for lake atmosphere observes during the summer season. These results can be attributed to an increase in the amount of salt particles in the lake atmosphere in summer and higher amounts of backscattering coefficient for salt particle relative to dust aerosol.

Keywords: Urmia Lake, CALIPSO, aerosol, optical depth, backscattering, salt particles
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Type of Study: Research | Subject: Special
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Ghomashi F, Khalesifard H R. Investigation of Atmospheric Aerosols Over the Urmia Lake using CALIPSO space-borne Lidar. ICOP & ICPET. 2018; 24 :377-380
URL: http://opsi.ir/article-1-1506-en.html


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انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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