Long-Term Investigation of Aerosols in the Urmia Lake Region in the Middle East by Ground-Based and Satellite Data in 2000–2021

Dried lake beds are some of the largest sources of dust in the world and have caused environmental problems in the surrounding areas in recent decades. In the present work, we studied the monthly and annual occurrence of dust storms at selected weather stations around Urmia Lake in northwestern (NW)...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2022-08, Vol.14 (15), p.3827
Main Authors: Abadi, Abbas Ranjbar Saadat, Hamzeh, Nasim Hossein, Shukurov, Karim, Opp, Christian, Dumka, Umesh Chandra
Format: Article
Language:English
Subjects:
aerosol optical depth
Aerosols
Aqua MODIS
CALIPSO
Dams
Deserts
Dust
Dust storms
Extinction
Investigations
Lake beds
Lakes
Lidar
MODIS
Optical analysis
Optical thickness
Power plants
Precipitation
Remote sensing
Salt
Sea level
Spectroradiometers
statistical aerosol investigation
Storms
Urmia Lake
Vegetation
Weather stations
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Summary:Dried lake beds are some of the largest sources of dust in the world and have caused environmental problems in the surrounding areas in recent decades. In the present work, we studied the monthly and annual occurrence of dust storms at selected weather stations around Urmia Lake in northwestern (NW) Iran. Furthermore, we investigated the variations in the daily aerosol optical depth (AOD at 550 nm) and the Ångström exponent (at 412/470 nm), as well as the vertical profile of the total aerosol extinction coefficient and AOD at 532 nm, using space-borne MODIS (Moderate Resolution Imaging Spectroradiometer) Aqua and CALIPSO Satellite LiDAR data over the Urmia Lake region (36–39°N, 44–47°E). The monthly variations of AOD550 and AOD532 for the regions 37–39°N and 46–59°E were compared, and it was found that the CALIPSO AOD532 and MODIS AOD532 (reconstructed using the Ångström exponent) were in good agreement. In general, the dust storms during 2000–2021 increased the AOD550 above average around the Urmia Lake. The vertical profile of aerosols showed that the largest contribution to total aerosol loading over the Urmia Lake was from 1.5–3 km, 1.5–4 km, 1.5–5 km, and 1.5–3 km during winter, spring, summer, and autumn seasons, respectively.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs14153827