Impact of convection and stability parameters on lightning activity over Andhra Pradesh, India

Umakanth, N.; Satyanarayana, G.; Simon, B.; Kumar, Prashant; Rao, M. C.

doi:10.1007/s11600-020-00479-0

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Recently, Midya studied the thunderstorm over Kolkata and found that more than 30 lightning events per minute at the highest wind speed of 50 km/h (7) , Umakanth claims that lightning-related deaths are increasing and it has a 75% correlation with rainfall over Kerala (8) . Whereas in another study, he also reported a strong correlation (r= 0.83) between the flash rate density & Convective Available Potential Energy (CAPE) over Andhra Pradesh (9) . Dust storms also have a significant contribution to lightning activities, dust events provoke 30% positive lightning activities (200 flashes per min) over the northwest & north-eastern part (10) .…”

Section: Introductionmentioning

confidence: 91%

Lightning Development over the Distinct Climate Regions of Uttarakhand, India

Gautam¹,

Singh²,

Gautam³

et al. 2023

IJST

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Objectives: Lightning activity and its connections with meteorology and aerosol loading over Uttarakhand, with varying topography and climates, is studied using ISS Lightning Imaging Sensor (LIS) aboard international space station (ISS) data during the period 2018-2021. Methods: To understand the variation of lightning activity with meteorology and aerosol loading the correlation of lightning activity with different meteorological parameters such as surface temperature, convective available potential energy (CAPE), aerosol optical depth (AOD), and convective precipitation is studied. Findings: Very poor correlation is observed between lightning flash counts with the meteorological parameters. Annual variation of lightning activity over Uttarakhand shows maximum during the monsoon season (June-September) with a peak during the pre-monsoon season (March-May) month April. The high frequency of western disturbances defined as warm low-pressure systems associated with moisture originated over Mediterranean Sea travelling from west to east across the northern states are responsible for peak lightning activity during pre-monsoon month April and maximum lightning activity in the monsoon season is attributed to the monsoon convection. Novelty: The study made the spatio -temporal variation of lightning over Uttarakhand and also reveals the connection between lightning and different meteorological parameters in different climatic conditions of Uttarakhand which is first defining the importance of large-scale meteorological processes in the development of lightning in Uttarakhand.

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Section: Introductionmentioning

confidence: 91%

Lightning Development over the Distinct Climate Regions of Uttarakhand, India

Gautam¹,

Singh²,

Gautam³

et al. 2023

IJST

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Statistical and dynamical based thunderstorm prediction over southeast India

Umakanth

Satyanarayana

Naveena³

et al. 2021

J Earth Syst Sci

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Prediction of Heatwave 2013 over Andhra Pradesh and Telangana, India using WRF Model

Naveena¹,

Satyanarayana²,

Raju³

et al. 2021

Asian J. Atmos. Environ

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Heatwaves are acknowledged to be the major meteorological disaster, causing a noticeable impact on humans and animals’ lives during the last few decades. The number, frequency, duration, intensity, and areal extent of the heatwaves are on the rise during recent years. The Maximum temperature data of 2013 is analyzed to assess the synoptic nature, intensity, frequency, and various significant facets of the heatwave over the south peninsular states of Andhra Pradesh and Telangana. Indian subcontinent experienced a major heatwave during 2013, which claimed 1216 human lives. Even though the highest intensity of maximum temperatures is observed in May over major areas of India, the increasing (incidence, duration, number of spells, and the sweltering temperatures) number of heatwaves are observed over many parts of the country. The northwest and southeast coastal regions are the two heat wave prone regions. The advection of heat from the northwest with the aid of north-westerly winds causes heatwaves over northwest India to sweep or move towards India’s southeast and east coast. The heatwave record over south-eastern India, i.e, Andhra Pradesh and the adjoining Telangana state during May 22–24, 2013 were described in this study. Maximum temperatures above 40°C are observed with a sudden rise by 6 to 7°C over the study region. An attempt is made to predict the maximum temperatures 72 hours before the existence of a heatwave at 3 km horizontal resolution using the Advanced core of the Weather Research and Forecasting (WRF) model. Model predicted temperature values match with observations and the statistical metrics show a high index of the agreement, lower values for root-mean-square error and mean absolute error. Atmospheric circulation patterns associated with this heatwave are also presented. The arrest of sea breeze, the hovering of diabatic heat because of subsidence is the factor that abetted the heatwave blockade over the south-eastern part of the country. The WRF model forecasts could present the occurance of the heat wave over AP and Telangana region with 72 hour lead time with high accuracy.

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Impact of convection and stability parameters on lightning activity over Andhra Pradesh, India

Cited by 3 publications

References 24 publications

Lightning Development over the Distinct Climate Regions of Uttarakhand, India

Lightning Development over the Distinct Climate Regions of Uttarakhand, India

Statistical and dynamical based thunderstorm prediction over southeast India

Prediction of Heatwave 2013 over Andhra Pradesh and Telangana, India using WRF Model

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