A modelling study of the effect of ice particle sizes and relative velocity on ice crystal/graupel collisional charge transfer

B. Tsenova; R. Mitzeva; Clive Saunders

doi:10.1016/j.atmosres.2008.04.008

A modelling study of the effect of ice particle sizes and relative velocity on ice crystal/graupel collisional charge transfer

B. Tsenova, R. Mitzeva, Clive Saunders

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of ice particle sizes and relative velocity on the sign of charge transfer during graupel/ice crystal interactions in thunderstorms is considered based on the concept of the Relative Growth Rate Hypothesis that the ice surface growing faster by water vapour diffusion charges positively. Diffusional growth rates of ice crystals and riming graupel particles are calculated for various particle sizes and velocities, and the sign of charging during crystal/graupel collisions is determined. The study reveals that larger graupel charges more negatively, while larger ice crystals, or higher relative velocity, lead to increased positive graupel charging. © 2008 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	250-258
Number of pages	8
Journal	Atmospheric Research
Volume	91
Issue number	2-4
Early online date	5 Sept 2008
DOIs	https://doi.org/10.1016/j.atmosres.2008.04.008
Publication status	Published - Feb 2009

Keywords

Graupel
Ice crystals
Thunderstorm charging

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10.1016/j.atmosres.2008.04.008

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title = "A modelling study of the effect of ice particle sizes and relative velocity on ice crystal/graupel collisional charge transfer",

abstract = "The effect of ice particle sizes and relative velocity on the sign of charge transfer during graupel/ice crystal interactions in thunderstorms is considered based on the concept of the Relative Growth Rate Hypothesis that the ice surface growing faster by water vapour diffusion charges positively. Diffusional growth rates of ice crystals and riming graupel particles are calculated for various particle sizes and velocities, and the sign of charging during crystal/graupel collisions is determined. The study reveals that larger graupel charges more negatively, while larger ice crystals, or higher relative velocity, lead to increased positive graupel charging. {\textcopyright} 2008 Elsevier B.V. All rights reserved.",

keywords = "Graupel, Ice crystals, Thunderstorm charging",

author = "B. Tsenova and R. Mitzeva and Clive Saunders",

year = "2009",

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doi = "10.1016/j.atmosres.2008.04.008",

language = "English",

volume = "91",

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journal = "Atmospheric Research",

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TY - JOUR

T1 - A modelling study of the effect of ice particle sizes and relative velocity on ice crystal/graupel collisional charge transfer

AU - Tsenova, B.

AU - Mitzeva, R.

AU - Saunders, Clive

PY - 2009/2

Y1 - 2009/2

N2 - The effect of ice particle sizes and relative velocity on the sign of charge transfer during graupel/ice crystal interactions in thunderstorms is considered based on the concept of the Relative Growth Rate Hypothesis that the ice surface growing faster by water vapour diffusion charges positively. Diffusional growth rates of ice crystals and riming graupel particles are calculated for various particle sizes and velocities, and the sign of charging during crystal/graupel collisions is determined. The study reveals that larger graupel charges more negatively, while larger ice crystals, or higher relative velocity, lead to increased positive graupel charging. © 2008 Elsevier B.V. All rights reserved.

AB - The effect of ice particle sizes and relative velocity on the sign of charge transfer during graupel/ice crystal interactions in thunderstorms is considered based on the concept of the Relative Growth Rate Hypothesis that the ice surface growing faster by water vapour diffusion charges positively. Diffusional growth rates of ice crystals and riming graupel particles are calculated for various particle sizes and velocities, and the sign of charging during crystal/graupel collisions is determined. The study reveals that larger graupel charges more negatively, while larger ice crystals, or higher relative velocity, lead to increased positive graupel charging. © 2008 Elsevier B.V. All rights reserved.

KW - Graupel

KW - Ice crystals

KW - Thunderstorm charging

U2 - 10.1016/j.atmosres.2008.04.008

DO - 10.1016/j.atmosres.2008.04.008

M3 - Article

SN - 0169-8095

VL - 91

SP - 250

EP - 258

JO - Atmospheric Research

JF - Atmospheric Research

IS - 2-4

ER -

A modelling study of the effect of ice particle sizes and relative velocity on ice crystal/graupel collisional charge transfer

Abstract

Keywords

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