气候变化领域集成服务门户(CCPortal): The influence of supersaturation at low rime accretion rates on thunderstorm electrification from field-independent graupel-ice crystal collisions

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DOI	10.1016/j.atmosres.2020.104962
	The influence of supersaturation at low rime accretion rates on thunderstorm electrification from field-independent graupel-ice crystal collisions
	Emersic C.; Saunders C.P.R.
发表日期	2020
ISSN	0169-8095
卷号	242
英文摘要	Laboratory cloud chamber experiments have revealed the significance of cloud supersaturation on field-independent graupel-ice crystal charging associated with thunderstorm electrification. At rime accretion rates below approximately 1 g m−2 s−1, altering supersaturation can reverse the polarity of graupel charging when other conditions are maintained. Explanations are given to reconcile variation between many published observations by considering the factors associated with particle surface diffusional growth that contribute to the resulting polarity of charge. Findings are consistent with the Relative Diffusional Growth Rate hypothesis. Variations between observations can be qualitatively accounted for by considering the effects of ice crystal thermal preconditioning, crystal size, and cloud supersaturation. The varieties of observed charge polarity reversal as a function of cloud temperature and liquid water content are also characterised. Recommendations are given for future laboratory experimental measurements to avoid ambiguity during interpretation. © 2020
英文关键词	Charging; Relative diffusional growth rate hypothesis; Rime accretion rate; Supersaturation; Thunderstorm electrification
语种	英语
scopus关键词	Charging (furnace); Crystals; Electric utilities; Ice; Supersaturation; Thunderstorms; Accretion rate; Chamber experiments; Cloud supersaturation; Diffusional growth; Diffusional growth rates; Liquid water content; Thermal preconditioning; Thunderstorm electrification; Growth rate; cloud; electrification; ice crystal; supersaturation; thunderstorm; water content
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141912
作者单位	Electrical and Electronic Engineering, The University of Manchester, Manchester, United Kingdom; Centre for Atmospheric Science, The University of Manchester, Manchester, United Kingdom
推荐引用方式 GB/T 7714	Emersic C.,Saunders C.P.R.. The influence of supersaturation at low rime accretion rates on thunderstorm electrification from field-independent graupel-ice crystal collisions[J],2020,242.
APA	Emersic C.,&Saunders C.P.R..(2020).The influence of supersaturation at low rime accretion rates on thunderstorm electrification from field-independent graupel-ice crystal collisions.Atmospheric Research,242.
MLA	Emersic C.,et al."The influence of supersaturation at low rime accretion rates on thunderstorm electrification from field-independent graupel-ice crystal collisions".Atmospheric Research 242(2020).