Publication:
Influence of meteorological parameters on lightning flashes over Indian region

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dc.contributor.authorYadava, Pramod Kumar
dc.contributor.authorSharma, Ajay
dc.contributor.authorPayra, Swagata
dc.contributor.authorMall, R.K.
dc.contributor.authorVerma, Sunita
dc.date.accessioned2025-01-28T09:28:53Z
dc.date.available2025-01-28T09:28:53Z
dc.date.issued2023
dc.description.abstractAbstract: Lightning flashes (LF) and their association with meteorological variables that can influence the occurrence of lightning have been assessed in detail over the Indian domain, i.e., the Convective Available Potential Energy (CAPE), Relative Humidity (RH), Total Column Water Vapour (TCWV), Surface Temperature (ST) and Outgoing Longwave Radiation (OLR). A high-resolution dataset of LF has been retrieved from the Lightning Imaging Sensor (LIS) on board the Tropical Rainfall Measuring Mission (TRMM) satellite. The CAPE, TCWV, RH and ST from 1998 to 2013 are retrieved using ERA-Interim monthly/annual climatology�while OLR was retrieved�from NCEP datasets. The seasonal analysis shows that most LF occur during the pre-monsoon period (March, April, and May) (0.40�0.45 flash/km2/day) over northeast region. During the monsoon season (June, July, and August), the LF dominates over northern India (0.35�0.40 flash/km2/day). The seasonal variation of CAPE shows the maximum (1250�2250 J/kg) during pre-monsoon over the coastal area of NE and SE regions. TCWV and RH show the maximum in monsoon season over northeastern part, which is 50�70 kg/m2 and 60�80%, respectively. The�dependence�of LF�on�meteorological parameters�varies�from�region�to�region,�as�is�evident�from�statistical�analysis.�Maximum LF occurred over the NE (0.049 flash/km2/day) region, followed by the EC (0.041 flash/km2/day) and the lowest in the WC (0.027 flash/km2/day) region of India. The LF showed a significant correlation with CAPE over NE and EC of India because of higher humidity content values over the coastal regions, which form graupel through convection. Over the WH, LF and CAPE showed a good correlation (r = 0.94) because of orographic convection processes. Further, TCWV showed significant correlation with LF over WH (0.89) and minimum over WC (0.23) region. Principal component analysis (PCA) shows that lightning is well correlated with CAPE, RH, TCWV and ST over most regions in India. However, lightning is not significantly correlated with OLR. Understanding the meteorology of lightning across the Indian region can inform forecasting of possible lightning events and is relevant for assessing lightning for human, wild risk and climate projections. Research highlights: The regional-scale meteorological variables associated with lightning are identified.Due to the regional orography, lightning flashes show high correlation in proximity to meteorological variables.The spatio-temporal distribution shows that most of the lightning flashes occur during March, April and May (MAM) months over North East region.The impact of meteorological variables is visible as the study's threshold values change over time. � 2023, Indian Academy of Sciences.
dc.identifier.doihttps://doi.org/10.1007/s12040-023-02188-w
dc.identifier.issn23474327
dc.identifier.urihttps://dl.bhu.ac.in/ir/handle/123456789/21238
dc.language.isoen
dc.publisherSpringer
dc.subjectconvective�available potential energy (CAPE)
dc.subjectLightning flashes�(LF)
dc.subjectoutgoing longwave radiation (OLR)
dc.subjectrelative humidity (RH)
dc.subjectsurface temperature (ST)
dc.subjecttotal column water vapour (TCWV)
dc.titleInfluence of meteorological parameters on lightning flashes over Indian region
dc.typeArticle
dspace.entity.typePublication
journal.titleJournal of Earth System Science
journalvolume.identifier.volume132

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2023