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

被引：0

作者：

Dayanandan, Baiju ^{[1
]}

Krishna, Nirmal ^{[1
]}

Parottil, Ajay ^{[2
]}

Velu, Vinoj ^{[3
]}

Al Harrasi, Ahmed ^{[1
]}

Sanatan, Binisia ^{[3
]}

Gupta, Pawan ^{[4
]}

Eck, Tom ^{[4
]}

Smirnov, Alexander ^{[4
]}

AlBadi, Humaid ^{[5
]}

机构：

[1] Natural and Medical Sciences Research Centre, University of Nizwa, Nizwa

[2] Atmospheric Chemistry Observations and Modelling, NSF, National Centre for Atmospheric Research (NCAR), Boulder, CO

[3] School of Earth, Ocean and Climate Sciences, Indian Institute of Technology Bhubaneswar, Odisha, Bhubaneswar

[4] Goddard Space Flight Center, NASA, Greenbelt, 20771, MD

[5] Oman Civil Aviation Authority, Muscat

来源：

Aerosol and Air Quality Research | 2025年 / 25卷 / 05期

关键词：

Aerosol optical depth (AOD); Angstrom exponent (AE); Coarse mode particle; Concentration-weighted trajectory (CWT); Radiative forcing; Single scattering albedo (SSA);

D O I：

10.1007/s44408-025-00014-0

中图分类号：

学科分类号：

摘要：

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. © The Author(s) 2025.

引用

共 96 条

[1] Abuelgasim A., Farahat A., Effect of dust loadings, meteorological conditions, and local emissions on aerosol mixing and loading variability over highly urbanized semiarid countries: United Arab Emirates case study, J Atmos Solar-Terr Phys, (2020)
[2] Ali M., Tariq S., Mahmood K., Daud A., Batool A., Zia-Ul-Haq, A study of aerosol properties over Lahore (Pakistan) by using AERONET data, Asia-Pac J Atmos Sci, 50, 2, pp. 153-162, (2014)
[3] Ali M.A., Nichol J.E., Bilal M., Qiu Z., Mazhar U., Wahiduzzaman M., Almazroui M., Islam M.N., Classification of aerosols over Saudi Arabia from 2004–2016, Atmos Environ, (2020)
[4] Alley R., Berntsen T., Bindoff N.L., Chen Z., Chidthaisong A., Friedlingstein P., Gregory J., Heimann M., Hewitson B., Climate change 2007: the physical science basis. Contribution of working group I to the fourth assessment report of the intergovernmental panel on climate change, (2007)
[5] Angstrom A., On the atmospheric transmission of sun radiation and on dust in the air, Geogr Ann, 11, 2, pp. 156-166, (1929)
[6] Arkian F., Nicholson S.E., Long-term variations of aerosol optical depth and aerosol radiative forcing over Iran based on satellite and AERONET data, Environ Monit Assess, (2018)
[7] Basart S., Perez C., Cuevas E., Baldasano J.M., Gobbi G.P., Aerosol characterization in Northern Africa, Northeastern Atlantic, Mediterranean Basin and Middle East from direct-sun AERONET observations, Atmos Chem Phys, (2009)
[8] Basha G., Phanikumar D.V., Kumar K.N., Ouarda T.B.M.J., Marpu P.R., Investigation of aerosol optical, physical, and radiative characteristics of a severe dust storm observed over UAE, Remote Sens Environ, (2015)
[9] Bergstrom R.W., Russell P.B., Hignett P., Wavelength dependence of the absorption of black carbon particles: predictions and results from the tarfox experiment and implications for the aerosol single scattering albedo, J Atmos Sci, 59, 3, pp. 567-577, (2002)
[10] Branch O., Behrendt A., Gong Z., Schwitalla T., Wulfmeyer V., Convection initiation over the eastern Arabian peninsula, Meteorol Z, 29, 1, pp. 67-77, (2020)

← 1 2 3 4 5 6 7 8 9 10 →