WIT Press


Study On The Effect Of Dust Aerosols Over Riyadh

Price

Free (open access)

Paper DOI

10.2495/AIR150141

Volume

198

Pages

11

Page Range

167 - 177

Published

2015

Size

495 kb

Author(s)

A. H. Maghrabi

Abstract

Atmospheric aerosols are linked to the climate system and to the hydrologic cycle. Dust is one of the major types of tropospheric aerosols. Dust particles affect both solar and terrestrial radiation, and are thus considered an important parameter in radiation budget studies. In this study, we investigate the impact of two dusty events that occurred on the 12th and between the 17th and 20th July 2000 on both Aerosol Optical Depth and Angstrom Exponent using ground-based measurements. High turbidity values and low Angstrom exponents during the events, in comparison with the previous days, were found. Theoretical calculations using the SMART model show that the dusty conditions significantly decreased the global and direct-beam irradiances, and increased the diffuse component.

Keywords

dust storm, Angstrom component, AOD, July 2000, CIMEL, Riyadh