Initial study of column-integrated aerosol optical properties over Birkat al Mouz, Sultanate of Oman

Purpose 

This study aims to provide the first analysis of aerosol optical properties, radiative forcing, and source identification over Birkat al Mouz, Oman, using Aerosol Robotic Network (AERONET) data from December 2022 to November 2024. 

Methods 

We analyzed Aerosol Optical Depth (AOD), Angstrom Exponent (AE), Single Scattering Albedo (SSA), aerosol radiative forcing (RF), and performed Concentration-Weighted Trajectory (CWT) analysis to identify aerosol transport pathways and sources.

Results 

The highest aerosol loading (AOD = 0.49 ± 0.15) occurred in summer, with the lowest (0.17 ± 0.08) in winter. AE values (maximum 0.94 ± 0.20 in winter, minimum 0.42 ± 0.17 in summer) indicated coarse-mode aerosol dominance. Seasonal SSA values were highest in summer (0.95), confirming significant dust aerosol influence. Surface RF averaged − 43.81 W m−2, atmospheric RF was 27.04 W m−2, and aerosol-induced heating reached 0.74 K day−1. CWT analysis revealed the Horn of Africa, and arid regions of the Arabian Peninsula as major aerosol sources.

Conclusion 

Seasonal aerosol variations in Birkatal Mouz are predominantly driven by dust aerosols transported from remote regions, highlighting their significant role in regional climate forcing.

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Author Dayanandan, B.
Krishna, N.
Parottil, Ajay J.
Velu, V.
Al Harrasi, A.
Sanatan, B.
Gupta, P.
Eck, T.
Smirnov, A.
AlBadi, H.
Publisher UCAR/NCAR - Library

Publication Date 2025-05-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2025-12-24T17:50:07.759972
Metadata Record Identifier edu.ucar.opensky::articles:43568
Metadata Language eng; USA
Suggested Citation Dayanandan, B., Krishna, N., Parottil, Ajay J., Velu, V., Al Harrasi, A., Sanatan, B., Gupta, P., Eck, T., Smirnov, A., AlBadi, H.. (2025). Initial study of column-integrated aerosol optical properties over Birkat al Mouz, Sultanate of Oman. UCAR/NCAR - Library. https://n2t.net/ark:/85065/d7st7v84. Accessed 07 March 2026.

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