28 June 2015 to 3 July 2015
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016

Monte Carlo based estimation of the effect of different aerosol classes on solar irradiance in African atmospheric conditions

1 Jul 2015, 14:20
20m
Oral Presentation Track F - Applied Physics Applied

Speaker

Ms MARIE CHANTAL CYULINYANA (department of physics, University of johannesburg)

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Main supervisor (name and email)<br>and his / her institution

Name: Prof. Hartmut Winkler
Email:hwinkler@uj.ac.za
Institution: University of Johannseburg

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Aerosols influence ground level solar irradiance through their scattering and absorption of the solar light. The degree of direct solar beam attenuation, as well as the angular and wavelength dependence of the diffuse (scattered sunlight) sky brightness strongly depends on the concentration, size distribution and nature of the aerosol class. Aerosols common in the atmosphere in African conditions, such as biomass burning-generated smoke, wind-generated dust and salt crystal-based marine haze all influence incoming sunlight in different ways. In this paper, a Monte Carlo approach is employed to track the movement of photons from the top of the atmosphere to the Earth’s surface for a variety of atmospheric compositions characteristic of typical African localities. The results show that the variations in aerosol types not only change the amount of direct solar radiation reaching a ground based detector or solar panel, but also the angular distribution and color of the detected diffuse light. We compare the ground-level solar energy yield for the cases investigated and briefly discuss the consequences for solar energy generation in typical African conditions.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Primary author

Ms MARIE CHANTAL CYULINYANA (department of physics, University of johannesburg)

Co-author

Prof. Hartmut Winkler (University of Johannesburg)

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