Synoptic climatology of pre-monsoon frequent lightning events in Bangladesh
In Bangladesh, there were 1073 lightning-related deaths reported only in May from 2010 to 2021. This figure accounts for 34% of the total lightning-related deaths in the country. A strong sea-level pressure ridge from the north-west and a 500 hPa geo-potential height ridge spanning across north-west...
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| Veröffentlicht in: | Natural hazards (Dordrecht) 2023-03, Vol.116 (1), p.1053-1070 |
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| description | In Bangladesh, there were 1073 lightning-related deaths reported only in May from 2010 to 2021. This figure accounts for 34% of the total lightning-related deaths in the country. A strong sea-level pressure ridge from the north-west and a 500 hPa geo-potential height ridge spanning across north-west to south-east Bangladesh favour frequent pre-monsoon lightning. The elongated low-pressure trough over the Gangetic plains of India towards Bangladesh is a very unique geo-characteristic for convective activity in May. Heightened pre-monsoon lightning activity is also due to a very strong temperature anomaly coupled with an associated convective precipitation system that is triggered by topographic forces from the Shillong Plateau and the Chittagong Hill Tracts. The southerly to south-westerly low-level jet assists moisture transport from the Bay of Bengal in the pre-monsoon. Further, the north to north-westerly subtropical jet stream provides conditions that are conducive to the development of frequent pre-monsoon lightning activity. Moreover, convective available potential energy (CAPE) all over the country in May destabilises the country’s atmosphere with numerous thunderstorms. Precise information of the pre-monsoon climatological anomaly and the associated atmospheric stability indices can be beneficial for the management of lightning-related deaths in Bangladesh. |
| doi_str_mv | 10.1007/s11069-022-05711-2 |
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The southerly to south-westerly low-level jet assists moisture transport from the Bay of Bengal in the pre-monsoon. Further, the north to north-westerly subtropical jet stream provides conditions that are conducive to the development of frequent pre-monsoon lightning activity. Moreover, convective available potential energy (CAPE) all over the country in May destabilises the country’s atmosphere with numerous thunderstorms. 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Azharul</creatorcontrib><creatorcontrib>Uddin, Md. Nasir</creatorcontrib><title>Synoptic climatology of pre-monsoon frequent lightning events in Bangladesh</title><title>Natural hazards (Dordrecht)</title><addtitle>Nat Hazards</addtitle><description>In Bangladesh, there were 1073 lightning-related deaths reported only in May from 2010 to 2021. This figure accounts for 34% of the total lightning-related deaths in the country. A strong sea-level pressure ridge from the north-west and a 500 hPa geo-potential height ridge spanning across north-west to south-east Bangladesh favour frequent pre-monsoon lightning. The elongated low-pressure trough over the Gangetic plains of India towards Bangladesh is a very unique geo-characteristic for convective activity in May. 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Azharul</au><au>Uddin, Md. Nasir</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synoptic climatology of pre-monsoon frequent lightning events in Bangladesh</atitle><jtitle>Natural hazards (Dordrecht)</jtitle><stitle>Nat Hazards</stitle><date>2023-03-01</date><risdate>2023</risdate><volume>116</volume><issue>1</issue><spage>1053</spage><epage>1070</epage><pages>1053-1070</pages><issn>0921-030X</issn><eissn>1573-0840</eissn><abstract>In Bangladesh, there were 1073 lightning-related deaths reported only in May from 2010 to 2021. This figure accounts for 34% of the total lightning-related deaths in the country. A strong sea-level pressure ridge from the north-west and a 500 hPa geo-potential height ridge spanning across north-west to south-east Bangladesh favour frequent pre-monsoon lightning. The elongated low-pressure trough over the Gangetic plains of India towards Bangladesh is a very unique geo-characteristic for convective activity in May. Heightened pre-monsoon lightning activity is also due to a very strong temperature anomaly coupled with an associated convective precipitation system that is triggered by topographic forces from the Shillong Plateau and the Chittagong Hill Tracts. The southerly to south-westerly low-level jet assists moisture transport from the Bay of Bengal in the pre-monsoon. Further, the north to north-westerly subtropical jet stream provides conditions that are conducive to the development of frequent pre-monsoon lightning activity. Moreover, convective available potential energy (CAPE) all over the country in May destabilises the country’s atmosphere with numerous thunderstorms. Precise information of the pre-monsoon climatological anomaly and the associated atmospheric stability indices can be beneficial for the management of lightning-related deaths in Bangladesh.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11069-022-05711-2</doi><tpages>18</tpages><orcidid>https://orcid.org/0000-0002-8873-0053</orcidid></addata></record> |
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| subjects | Atmospheric stability Civil Engineering Climatology Convective activity Convective available potential energy Convective precipitation Earth and Environmental Science Earth Sciences Environmental Management Fatalities Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Hydrogeology Jet stream Jet streams (meteorology) Lightning Lightning activity Low pressure Low-level jets Moisture effects Monsoon climates Monsoons Natural Hazards Original Paper Plateaus Potential energy Sea level Sea level pressure Stability index Subtropical jet stream Synoptic climatology Temperature anomalies Thunderstorms Wind |
| title | Synoptic climatology of pre-monsoon frequent lightning events in Bangladesh |
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