Observations of Saharan dust layer electrification

Nicoll, K. A. ORCID: https://orcid.org/0000-0001-5580-6325, Harrison, R. G. ORCID: https://orcid.org/0000-0003-0693-347X and Ulanowski, Z. (2011) Observations of Saharan dust layer electrification. Environmental Research Letters, 6 (1). 014001. ISSN 1748-9326 doi: 10.1088/1748-9326/6/1/014001

Abstract/Summary

Electrification of atmospheric dust influences the coagulation, wet removal and fall speeds of dust particles. Alignment of dust particles can also occur in fair weather atmospheric electrical conditions if the particles are charged. However, very few electrical measurements made in elevated dust layers exist. Balloon-borne charge and particle instrumentation have been used to investigate the electrical properties of elevated Saharan dust layers. Soundings from the Cape Verde Islands, which experience frequent Saharan dust outbreaks, intercepted several dust layers. Two balloon soundings during summer 2009 detected dust particles in layers up to 4 km altitude. Simultaneous electrical measurements showed charge inside the dust layers, with a maximum measured charge density of 25 pC m − 3, sufficient to influence wet removal processes.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/18651
Identification Number/DOI	10.1088/1748-9326/6/1/014001
Refereed	Yes
Divisions	Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Publisher	Institute of Physics
Download/View statistics	View download statistics for this item