Academic Journal
Analysis of lightning flash rate with the occurrence of flash floods and hailstorms in Peninsular Malaysia.
| العنوان: | Analysis of lightning flash rate with the occurrence of flash floods and hailstorms in Peninsular Malaysia. |
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| المؤلفون: | Bahari, Noraishah, Mohammad, Sulaiman Ali, Mohd. Esa, Mona Riza, Ahmad, Mohd. Riduan, Ahmad, Noor Azlinda, Abdul Malek, Zulkurnain |
| بيانات النشر: | Elsevier Ltd. |
| سنة النشر: | 2023 |
| المجموعة: | Universiti Teknologi Malaysia: Institutional Repository |
| مصطلحات موضوعية: | TK Electrical engineering. Electronics Nuclear engineering |
| الوصف: | This paper will present five flash flood cases in Johor and two hailstorms from Kuala Lumpur and Melaka reported during lightning activities to determine the relationship between lightning flash rate and rainfall that occurred from 2013 to 2017. The flash floods were observed based on lightning data obtained from Tenaga Nasional Berhad Research Sdn. Bhd. (TNBR) and rainfall data from the Department of Irrigation and Drainage (DID). On the other hand, storm-producing hails were observed based on the lightning flash rate using electromagnetic field measurements and weather radar for their reflectivity value and cloud structure. The detection of a lightning flash, especially the negative narrow bipolar event (−NBE) and positive cloud-to-ground (+CG), could be a possible indicator of a deeper convective storm that could lead to the production of hails. In the 24-h observation of selected days when a flash flood occurred, lightning strikes correlation with rainfall had r-values ranging from 0.6 to 0.9, where the lightning data may enhance flood forecasting accuracy when combined with rainfall. Meanwhile, during the first hailstorms in Kuala Lumpur, the highest −NBEs flash rate detected during the hails appeared where 16 −NBEs were detected in a span of 5 min with reflectivity value between 53 and 55 dBz and cloud top height of 20 km. During the second hailstorms in Melaka, more + CG flashes rather than −NBE were detected during the appearance of the hail, with 64 +CG flashes and five −NBEs with reflectivity values between 60 and 66 dBz and cloud top height of 18.8 km. Based on the high convective strength, cloud top height, and presence of hailstones, −NBE and +CG flash could be possible indicators of storm severity, especially in Malaysia. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | Bahari, Noraishah and Mohammad, Sulaiman Ali and Mohd. Esa, Mona Riza and Ahmad, Mohd. Riduan and Ahmad, Noor Azlinda and Abdul Malek, Zulkurnain (2023) Analysis of lightning flash rate with the occurrence of flash floods and hailstorms in Peninsular Malaysia. Journal of Atmospheric and Solar-Terrestrial Physics, 250 (106121). pp. 1-15. ISSN 13646826 |
| DOI: | 10.1016/j.jastp.2023.106121 |
| الاتاحة: | http://eprints.utm.my/106280/ https://doi.org/10.1016/j.jastp.2023.106121 |
| رقم الانضمام: | edsbas.5ED1F35C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.jastp.2023.106121 |
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