Emetere, Moses and Akinyemi, M. L. and Akin-Ojo, Omololu (2015) Parametric retrieval model for estimating aerosol size distribution via the AERONET, LAGOS station. Environmental Pollution, 207. pp. 381-390.
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Abstract
The size characteristics of atmospheric aerosol over the tropical region of Lagos, Southern Nigeria were investigated using two years of continuous spectral aerosol optical depth measurements via the AERONET station for four major bands i.e. blue, green, red and infrared. Lagos lies within the latitude of 6.465°N and longitude of 3.406°E. Few systems of dispersion model was derived upon specified conditions to solve challenges on aerosols size distribution within the Stokes regime. The dispersion model was adopted to derive an aerosol size distribution (ASD) model which is in perfect agreement with existing model. The parametric nature of the formulated ASD model shows the independence of each band to determine the ASD over an area. The turbulence flow of particulates over the area was analyzed using the unified number (Un). A comparative study via the aid of the Davis automatic weather station was carried out on the Reynolds number, Knudsen number and the Unified number. The Reynolds and Unified number were more accurate to describe the atmospheric fields of the location. The aerosols loading trend in January to March (JFM) and August to October (ASO) shows a yearly 15% retention of aerosols in the atmosphere. The effect of the yearly aerosol retention can be seen to partly influence the aerosol loadings between October and February.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Aerosol size distributionOptical bandsAerosol optical depthUnified numberDispersion model |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Physics |
| Depositing User: | Mrs Hannah Akinwumi |
| Date Deposited: | 16 Sep 2020 11:55 |
| Last Modified: | 16 Sep 2020 11:55 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/13605 |
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