Spatio-Temporal Lightning Analysis Over North Sulawesi in 2019 - 2020

This study aimed to analyze the spatial and temporal lightning distribution in North Sulawesi. The general meteorological condition of North Sulawesi has also been considered to identify the cause of the lightning occurrence. Lightning activity over North Sulawesi has been investigated using lightni...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2021-11, Vol.893 (1), p.12009
Main Authors: Azani, A A, Pratama, D A, Kusumawardani, N, Rusmala, I, Septiadi, D
Format: Article
Language:English
Subjects:
Density
La Nina
Land area
Lightning
Low pressure
Surface temperature
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Summary:This study aimed to analyze the spatial and temporal lightning distribution in North Sulawesi. The general meteorological condition of North Sulawesi has also been considered to identify the cause of the lightning occurrence. Lightning activity over North Sulawesi has been investigated using lightning data from Winangun Geophysical Station during 2019-2020. The result shows that in the land area of North Sulawesi, the highest lightning density occurred in the Tomohon regions due to its topographical features. Overall, the flash density over the land area is higher than the sea area due to its high atmospheric instability. The maximum flash density does not occur during the wet periods, but it occurs during September - October – November, which has a high surface temperature over this region. It is also known that shearline and low-pressure areas contribute to the high lightning occurrence in October 2019, while La Nina in the Pacific Ocean influences lightning activity in July 2020
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/893/1/012009