Investigation of atmospheric particles in Urmia Lake region using a hand-held sun-photometer
| Autor: | Alizadeh Salar, Bayat Ali, Khalesifard Hamid R. |
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| Jazyk: | English<br />French |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | E3S Web of Conferences, Vol 575, p 01011 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2267-1242 20245750 |
| DOI: | 10.1051/e3sconf/202457501011 |
| Popis: | Urmia Lake is a hypersaline lake in Northwest Iran. Regions inside its water catchment area experience frequent dust events. We are reporting the results of a two-year measurement campaign using a Calitoo sunphotometer, alongside synoptic measurements, satellite data, and atmospheric models. The monthly mean aerosol optical thickness (AOT) demonstrates a seasonal pattern, with fine particles prevailing in the winter and coarse particles being dominant during the summer months. Approximately 69% and 10% of the measurements indicate urban-industrial pollution and dust as the primary atmospheric particle types in the region, respectively. On the remaining days, a combination of the aforementioned aerosol types prevails as the dominant atmospheric particle composition. An in-depth analysis of a specific dust event unveiled a 24-hour delay between the peak AOT and the subsequent increase in particulate matter. Furthermore, the HYSPLIT model’s backward trajectory analysis depicted the transport of a dust plume from Mesopotamia to Urmia Lake, inducing alterations in AOT, mass concentrations, and visibility. |
| Databáze: | Directory of Open Access Journals |
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