Spatial and temporal analysis of a 17-year lightning climatology over Bangladesh with LIS data

Dewan, Ashraf; Ongee, Emmanuel T.; Rahman, Masudur; Mahmood, Rezaul; Yamane, Yusuke

doi:10.1007/s00704-017-2278-3

Cited by 34 publications

(36 citation statements)

References 72 publications

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“…This season experiences the highest rate of flash density among all seasons. Previous research also has found that this season is experiencing the highest rate of lightning in this region(Dewan et. al., 2017b;Ranalkar & Chaudhari, 2009).…”

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confidence: 67%

Lightning hazard safety measures and awareness in Bangladesh

Islam

Schmidlin

2020

Nat Hazards

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confidence: 67%

Lightning hazard safety measures and awareness in Bangladesh

Islam

Schmidlin

2020

Nat Hazards

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“…These results strongly suggest that the major factor in increasing the flash rates is the increase in surface temperature in the NW but the increase in CAPE in the NE. Dewan et al (2018b) also reported that CAPE is the most important factor for the lightning activity variability on all time scales over the neighbouring area of Bangladesh.…”

Section: Discussionmentioning

confidence: 91%

“…For example, Somindra et al (2019) report higher lightning activity over the highly populated western region and lower activity in the northern and eastern regions and central hills of Sri Lanka. Dewan et al (2018a) found that the maximum lightning occurs in the morning and evening hours over Bangladesh and the flash counts are maximum in the pre-monsoon followed by the monsoon, post-monsoon and winter season. Further, in their studies the flash rate density increases from the Bay of Bengal to the higher elevations in the Himalayas foothills.…”

Section: Introductionmentioning

confidence: 99%

“…Further, in their studies the flash rate density increases from the Bay of Bengal to the higher elevations in the Himalayas foothills. In evaluating their results for the relations between environmental factors and lightning activity, Dewan et al (2018b) found that CAPE was the most important factor in affecting lightning variability on all time scales over Bangladesh. Mäkelä et al (2014) reported maximum lightning during local afternoon and early evening hours in June in the pre-monsoon season of 2012 over Nepal.…”

Section: Introductionmentioning

confidence: 99%

“…Dewan et al . (2018a) found that the maximum lightning occurs in the morning and evening hours over Bangladesh and the flash counts are maximum in the pre‐monsoon followed by the monsoon, post‐monsoon and winter season. Further, in their studies the flash rate density increases from the Bay of Bengal to the higher elevations in the Himalayas foothills.…”

Section: Introductionmentioning

confidence: 99%

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Regional variability in lightning activity over South Asia

Kamra

Kumar

2020

Intl Journal of Climatology

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The regional variability of lightning activity over 10 different regions, selected with at least one major meteorological/topographical feature, of South Asia (8 N-36 N, 90 E-100 E) have been examined on all time scales from the data obtained from July 1995 to December 2013 from the Tropical Rainfall Measuring Mission satellite. A comparative study of the correlation coefficients calculated between lightning flash rate and convective parameters, aerosol optical depth (AOD) and topography for different regions is carried out. Impact of the progress of the Asian Monsoon on the spatio-temporal variability of flash rate is also examined. Monthly-averaged variations are annual at the regions >2,700 m in altitude and are semi-annual at the regions <2,700 m in altitude. The annually averaged flash rates increase during the study period in most of the regions. However, such long-term changes are nonlinearly related to the change in convective parameters and AOD and such interrelationships differ from one meteorological region to another. Small changes in AOD in high altitude regions are associated with very large changes in the surface temperature and flash rate. The flash rate is strongly correlated with surface temperature in the dry region of the northwest but with CAPE in moist region of the northeast. Progress of the Asian monsoon strongly impacts the flash rate in different regions. Ratio of the amplitudes of primary to secondary maxima at land stations increases with latitude in case of the monthly-averaged variations in flash rate. The primary maxima in these variations are highly correlated with the atmospheric surface temperature. However, the secondary maxima are associated with the low-level convergence during the withdrawal phase of the monsoon. Incursion of moisture by the Bay of Bengal branch of monsoon current determines the sequence of occurrence of lightning activity in different regions along the Himalayan foothills and northwest .

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Spatial and Temporal Variability of Lightning Activity in Sri Lanka

Jayawardena

Mäkelä

2021

Multi-Hazard Early Warning and Disaster Risks

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Spatial and temporal analysis of a 17-year lightning climatology over Bangladesh with LIS data

Cited by 34 publications

References 72 publications

Lightning hazard safety measures and awareness in Bangladesh

Lightning hazard safety measures and awareness in Bangladesh

Regional variability in lightning activity over South Asia

Spatial and Temporal Variability of Lightning Activity in Sri Lanka

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