Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height

Positive cloud to ground (CG) flashes lowers positive charges from cloud to ground. Positive CG grasps more attention since they are highly allied with severe thunderstorms. Positive CG is known to account only approximately 10% out of all CG flashes. The positive CG can be compared with negative CG...

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Bibliographic Details
Main Author:	Thuraisamy, Yugeswari
Format:	Thesis
Language:	English
Published:	2018
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf
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id	my-utm-ep.79090
record_format	uketd_dc
spelling	my-utm-ep.790902018-09-27T06:07:32Z Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height 2018-01 Thuraisamy, Yugeswari TK Electrical engineering. Electronics Nuclear engineering Positive cloud to ground (CG) flashes lowers positive charges from cloud to ground. Positive CG grasps more attention since they are highly allied with severe thunderstorms. Positive CG is known to account only approximately 10% out of all CG flashes. The positive CG can be compared with negative CG, IC (intra cloud) and NBE (narrow bipolar event) flashes. The experimental setup to capture the electric field produced by the lightning flashes has taken place at UTeM Melaka. The measurement setup consists of 2 parallel plates, buffer circuit, antenna, high speed camera, GPS, Picoscope digitizer, and computer. The NBE, preliminary breakdown pulses, and first return stroke are included in this process. From the recorded data, very few positive CG have been captured. This is because the occurrence of positive CG is very less in low latitude countries due to the absence or very less anvil shape of the clouds. It is found that the occurrence of positive CG is very less about which is approximately 1.275% by average in two days and the cloud top height is about 13km to 14 km during the occurrence of positive CG. 2018-01 Thesis http://eprints.utm.my/id/eprint/79090/ http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:109585 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Thuraisamy, Yugeswari Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
description	Positive cloud to ground (CG) flashes lowers positive charges from cloud to ground. Positive CG grasps more attention since they are highly allied with severe thunderstorms. Positive CG is known to account only approximately 10% out of all CG flashes. The positive CG can be compared with negative CG, IC (intra cloud) and NBE (narrow bipolar event) flashes. The experimental setup to capture the electric field produced by the lightning flashes has taken place at UTeM Melaka. The measurement setup consists of 2 parallel plates, buffer circuit, antenna, high speed camera, GPS, Picoscope digitizer, and computer. The NBE, preliminary breakdown pulses, and first return stroke are included in this process. From the recorded data, very few positive CG have been captured. This is because the occurrence of positive CG is very less in low latitude countries due to the absence or very less anvil shape of the clouds. It is found that the occurrence of positive CG is very less about which is approximately 1.275% by average in two days and the cloud top height is about 13km to 14 km during the occurrence of positive CG.
format	Thesis
qualification_level	Master's degree
author	Thuraisamy, Yugeswari
author_facet	Thuraisamy, Yugeswari
author_sort	Thuraisamy, Yugeswari
title	Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_short	Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_full	Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_fullStr	Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_full_unstemmed	Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height
title_sort	characteristics of positive cloud to ground flashes in malaysia and correlation with cloud top height
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2018
url	http://eprints.utm.my/id/eprint/79090/1/YugeswariThuraisamyMFKE2018.pdf
_version_	1747818144341164032

Characteristics of positive cloud to ground flashes in Malaysia and correlation with cloud top height

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