气候变化领域集成服务门户(CCPortal): Consistent dust electrification from Arabian Gulf sea breezes

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DOI	10.1088/1748-9326/ab9e20
	Consistent dust electrification from Arabian Gulf sea breezes
	Nicoll K.; Harrison G.; Marlton G.; Airey M.
发表日期	2020
ISSN	17489318
卷号	15 期号:8
英文摘要	The Arabian Gulf region experiences regular thermally driven sea breeze circulations which occur all year round, penetrating hundreds of kilometres inland. As a sea breeze front moves inland, substantial electric fields are generated by separation of charged desert dust. In the first surface electric field measurements made in the United Arab Emirates (UAE), consistent and repeatable substantial electric field changes with magnitudes up to 7 kV m-1 have been detected at Al Ain (170 km from the western coast), during 80 separate sea breeze events in 2018. Every sea breeze frontal passage shows the same characteristic signature of a transient maximum peak in electric field lasting tens of minutes. Electric field changes during these events were always negative (i.e. enhancing the existing negative 'fair weather' electric field), in contrast to many other reported observations in dust storms in which conditions were less repeatable. The regular and substantial dust electrification found demonstrates that accurate representation of dust in climate and weather models requires electrical effects to be addressed, both in the generation process, and by considering aggregates in radiative transfer calculations as electrically aligned rather than randomly ordered. Furthermore, satellite aerosol retrievals are affected by the changed attenuation of electromagnetic radiation when dust particles are charged, for which corrections may be needed. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	aerosol and atmospheric electricity; charge; electric field
语种	英语
scopus关键词	Climate models; Electric fields; Electric utilities; Electromagnetic waves; Storms; Characteristic signature; Dust electrification; Electric field change; Generation process; Radiative transfer calculations; Sea breeze circulation; Surface electric fields; United Arab Emirates; Dust; atmospheric circulation; dust; electric field; electrification; measurement method; radiative transfer; sea breeze; Arabian Sea; Indian Ocean; Persian Gulf
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153853
作者单位	Department of Meteorology, University of Reading, United Kingdom; Department of Electronic and Electrical Engineering, University of Bath, United Kingdom
推荐引用方式 GB/T 7714	Nicoll K.,Harrison G.,Marlton G.,et al. Consistent dust electrification from Arabian Gulf sea breezes[J],2020,15(8).
APA	Nicoll K.,Harrison G.,Marlton G.,&Airey M..(2020).Consistent dust electrification from Arabian Gulf sea breezes.Environmental Research Letters,15(8).
MLA	Nicoll K.,et al."Consistent dust electrification from Arabian Gulf sea breezes".Environmental Research Letters 15.8(2020).