View in EDS

Initial Study of Column-Integrated Aerosol Optical Properties over Birkat al Mouz, Sultanate of Oman

Saved in:
Bibliographic Details
Title: Initial Study of Column-Integrated Aerosol Optical Properties over Birkat al Mouz, Sultanate of Oman
Authors: Baiju Dayanandan, Nirmal Krishna, Ajay Parottil, Vinoj Velu, Ahmed Al Harrasi, Binisia Sanatan, Pawan Gupta, Tom Eck, Alexander Smirnov, Humaid AlBadi
Source: Aerosol and Air Quality Research, Vol 25, Iss 5, Pp 1-18 (2025)
Publisher Information: Springer, 2025.
Publication Year: 2025
Collection: LCC:Science
Subject Terms: Aerosol optical depth (AOD), Angstrom exponent (AE), Radiative forcing, Single scattering albedo (SSA), Concentration-weighted trajectory (CWT), Coarse mode particle, Science
Description: Abstract 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 Birkat al Mouz are predominantly driven by dust aerosols transported from remote regions, highlighting their significant role in regional climate forcing. Graphical abstract
Document Type: article
File Description: electronic resource
Language: English
ISSN: 1680-8584
2071-1409
Relation: https://doaj.org/toc/1680-8584; https://doaj.org/toc/2071-1409
DOI: 10.1007/s44408-025-00014-0
Access URL: https://doaj.org/article/97557229cd1143f6ad78873c6e08af7e
Accession Number: edsdoj.97557229cd1143f6ad78873c6e08af7e
Database: Directory of Open Access Journals
Description
Abstract:Abstract 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 Birkat al Mouz are predominantly driven by dust aerosols transported from remote regions, highlighting their significant role in regional climate forcing. Graphical abstract
ISSN:16808584
20711409
DOI:10.1007/s44408-025-00014-0