Retrievals of Aerosol Optical Depth and Angstrom Exponent for Identification of Aerosols at Kuching, Sarawak

Abstract:

Anthropogenic and natural aerosols are important atmospheric constituents that significantly contribute to the Earth’s radiation budget but remain uncertainties due to the poor understanding of aerosol properties and its direct effects on scattering and absoprtion of solar radiation and the ability of aerosols to stay in atmosphere for a very short time. Different types of aerosols, representing biomass burning, urban or continental aerosols, maritime aerosols and dust particles will give different characterization and classification of aerosol properties. The data used in this study was obtained from Aerosol Robotic Network (AERONET).Two parameters were used for aerosol analysis which are Aerosol Optical Depth (AOD) at four wavelengths (440, 500, 675 and 870nm) and Angstrom exponent (α) derived from a multispectral log linear.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 5734-5737
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.5734
• Online since: May 2012
• Authors: Khairunnisa Abd Jalal, Arnis Asmat, Noordin Ahmad
• Keywords: Aerosol Optical Depth (AOD), Aerosol Optical Properties, Aerosol Robotic Network (AERONET), Angstrom Exponent

References

[1] P.B. Russell, R.W. Bergstrom, Y. Shinozuka, A.D. Clarke, P.F. DeCarlo, J.L. Jimenez, J.M. Livingston, J. Redemann, O. Dubovik, and A. Strawa (2010). Absorption Angstrom exponent in AERONET and related data as an indicator of aerosol composition. Atmos. Chem. Phys. 10, 1155–1169

DOI: 10.5194/acp-10-1155-2010

[2] Liu, J., Zheng, Y., Li, Z., and Wu, R. (2008). Ground-based remote sensing of aerosol optical properties in one city in Northwest China. Atmospheric Research. 89, 194 205

DOI: 10.1016/j.atmosres.2008.01.010

[3] Ichoku, C., Kaufman, Y.J., Remer, L.A., Levy, R. (2004). Global aerosol remote sensing from MODIS. Advances in Space Research. 34, 820-827

DOI: 10.1016/j.asr.2003.07.071

[4] Kambezidis, H.D., and Kaskaoutis, D.G. (2008). Aerosol climatology over four AERONET sites: An overview. Atmospheric Environment. 42, 1892-1906

DOI: 10.1016/j.atmosenv.2007.11.013

[5] Holben, B.N., Eck, T.F., Slutsker, I., Tanre, D., Buis, J.P., Setzer, A., Vermote, E., Reagen, J.A, Kaufman, Y.J., Nakajima, T., Lavenu, F., Jankowiak, I., and Smirnov, A. (1998).AERONET – A Federated Instrument Network and Data Archive for Aerosol Characterization. Remote Sensing Environment. 66, 1-6

DOI: 10.1016/s0034-4257(98)00031-5

[6] Cheng, A.Y.S., Chan, M.H., and Yang, X. (2006). Study of aerosol optical thickness in Hong Kong, validation, results, and dependence on meteorological parameters. Atmospheric Environment. 40, 4469 - 4477

DOI: 10.1016/j.atmosenv.2006.04.022

[7] Salinas, S.V., Chew, B.N., and Liew, S.C. (2009).Retrievals of aerosol optical depth and Angstrom exponent from ground-based Sun-photometer data of Singapore. Applied Optics.48, 8.

DOI: 10.1364/ao.48.001473

[8] Toledano, C., Cachorro, V.E., Berjon, A., de Furtos, A.M., Sorribas, M., de la Morena B.A., and Goloub, P. (2007). Aerosol optical depth and Angstrom exponent climatology at El Arenosillo AERONET site (Huelva, Spain). Quarterly Journal of the Royal Meteorlogical Society. 133, 795 - 807

DOI: 10.1002/qj.54