The Effect of Hygroscopic Growth on Continental Aerosols - Open Journal of Applied Sciences

OJAppS > Vol.3 No.6, October 2013

The Effect of Hygroscopic Growth on Continental Aerosols ()

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DOI: 10.4236/ojapps.2013.36048 4,806 Downloads 7,534 Views Citations

Author(s)

Bello Idrith Tijjani, Aliyu Aliyu, Fatima Shuaibu

Affiliation(s)

Department of Physics, Bayero University, Kano, Nigeria.
Department of Science Laboratory Technology, School of Technology, Kano State Polytechnic, Kano, Nigeria.
Girl’s Science and Technical College, Kano, Nigeria.

ABSTRACT

In this paper, the authors investigated some microphysical and optical properties of continental clean aerosols from OPAC to determine the effect of hygroscopic growth at the spectral range of 0.25 μm to 2.5 μm and eight relative humidities (RHs) (0%, 50%, 70%, 80%, 90%, 95%, 98% and 99%). The microphysical properties extracted were radii, volume mix ratio, number mix ratio and mass mix ratio as a function of RH while the optical properties are scattering and absorption coefficients and asymmetric parameters. Using the microphysical properties, growth factors of the mixtures were determined while using optical properties the enhancement parameters were determined and then parameterized using some models. We observed that the data fitted the models very well. The angstrom coefficients show that the mixture has bimodal type of distribution with the dominance of fine mode particles.

KEYWORDS

Microphysical Properties; Optical Properties; Hygroscopic Growth; Parametrization; Enhancement Parameters; Angstrom Coefficients

Share and Cite:

B. Tijjani, A. Aliyu and F. Shuaibu, "The Effect of Hygroscopic Growth on Continental Aerosols," Open Journal of Applied Sciences, Vol. 3 No. 6, 2013, pp. 381-392. doi: 10.4236/ojapps.2013.36048.

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