Increasing trend of lightning activity in the South Asia region

Qie, Kai; Qie, Xiushu; Tian, Wenshou

doi:10.1016/j.scib.2020.08.033

Cited by 51 publications

(27 citation statements)

References 47 publications

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“…Figure 1a shows the distribution of LIS/OTD lightning density over the TP and the southern slopes of the Himalayas. The average lightning density was about 2.7 fl km −2 yr −1 over the TP, while that was higher than 14 fl km −2 yr −1 on average over the southern slopes of the Himalayas, where it is one of the highest lightning density regions on earth and many previous works have targeted on lightning activity in this area (e.g., Chandra et al, 2022;Qie et al, 2021;Saha et al, 2017). In this paper, we only focused on lightning activity over the main body of the TP.…”

Section: The Spatial Pattern and Trends Of Lightningmentioning

confidence: 99%

“…Global lightning may experience a significant increase in a warming climate (Price & Rind, 1994; Reeve & Toumi, 1999; Williams, 2005). However, recent studies showed that lightning activity or thunder day decreased over the southeast North America, central South America, the Sahel, and eastern Australia (Lavigne et al., 2019; Qie et al., 2020), and increased over the Arctic, the South Asia, and the Amazon (Chandra et al., 2022; Chen et al., 2021; Holzworth et al., 2021; Qie et al., 2021; Saha et al., 2017). Romps et al.…”

Section: Introductionmentioning

confidence: 99%

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Significantly Increased Lightning Activity Over the Tibetan Plateau and Its Relation to Thunderstorm Genesis

Qie

Wei

et al. 2022

Geophysical Research Letters

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As a long-distance discharge phenomenon in nature, lightning not only poses serious risks to human beings but causes wildfires as well, which in turn affect the evolution of species and ecosystems (He et al., 2022;Hessilt et al., 2022). Lightning is the only natural source of nitrogen oxides (NOx) in the troposphere which regulates the oxidation ability in the upper troposphere and modulates tropospheric chemistry (Brune et al., 2021;Mao et al., 2021).Lightning activity shows large spatial heterogeneity on the globe with several lightning chimney regions around the equator (

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Section: The Spatial Pattern and Trends Of Lightningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Significantly Increased Lightning Activity Over the Tibetan Plateau and Its Relation to Thunderstorm Genesis

Qie

Wei

et al. 2022

Geophysical Research Letters

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“…The overall radar reflectivity structure over Jinan and Binzhou did not reach the thermal tropopause height, and the strong radar reflectivities were confined below an altitude of 6 km (480 hPa, −9 • C) suggesting limited vertical extension of convective storms. Lightning flashes are indicative of vertical development of a thunderstorm (e.g., Qie et al, 2021). A total of 362 cloud-to-ground lightning flashes were detected from 21:00 LST on 31 July to 06:00 LST on 1 August 2021 within a 50-km radius of Zhanhua station.…”

Section: Convection-facilitated Stratospheric Intrusion and Transport...mentioning

confidence: 99%

Transport of substantial stratospheric ozone to the surface by a dying typhoon and shallow convection

et al. 2022

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Abstract. Stratospheric ozone transported to the troposphere is estimated to account for 5 %–15 % of the tropospheric ozone sources. However, the chances of intruded stratospheric ozone reaching the surface are low. Here, we report an event of a strong surface ozone surge of stratospheric origin in the North China Plain (NCP, 34–40∘ N, 114–121∘ E) during the night of 31 July 2021. The hourly measurements reveal surface ozone concentrations of up to 80–90 ppbv at several cities over the NCP from 23:00 LST (Local Standard time, = UTC +8 h) on 31 July to 06:00 LST on 1 August 2021. The ozone enhancement was 40–50 ppbv higher than the corresponding monthly mean. A high-frequency surface measurement indicates that this ozone surge occurred abruptly, with an increase reaching 40–50 ppbv within 10 min. A concurrent decline in surface carbon monoxide (CO) concentrations suggests that this surface ozone surge might have resulted from the downward transport of a stratospheric ozone-rich and CO-poor air mass. This is further confirmed by the vertical evolutions of humidity and ozone profiles based on radiosonde and satellite data respectively. Such an event of stratospheric impact on surface ozone is rarely documented in view of its magnitude, coverage, and duration. We find that this surface ozone surge was induced by a combined effect of dying Typhoon In-fa and shallow local mesoscale convective systems (MCSs) that facilitated transport of stratospheric ozone to the surface. This finding is based on analysis of meteorological reanalysis and radiosonde data, combined with high-resolution Weather Research and Forecasting (WRF) simulation and backward trajectory analysis using the FLEXible PARTicle (FLEXPART) particle dispersion model. Although Typhoon In-fa on the synoptic scale was at its dissipation stage when it passed through the NCP, it could still bring down a stratospheric dry and ozone-rich air mass. As a result, the stratospheric air mass descended to the middle-to-low troposphere over the NCP before the MCSs formed. With the pre-existing stratospheric air mass, the convective downdrafts of the MCSs facilitated the final descent of stratospheric air mass to the surface. Significant surface ozone enhancement occurred in the convective downdraft regions during the development and propagation of the MCSs. This study underscores the substantial roles of weak convection in transporting stratospheric ozone to the lower troposphere and even to the surface, which has important implications for air quality and climate change.

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“…It is developed due to the convective activities in the cumulonimbus clouds (1) . Lightning activities are increasing at the rate of 0.096 fl km-2 a-1 over the south Asia region (2) . In the lightning clouds, the negative charge is concentrated on the atmospheric temperature range -10 • C to -20 • C and the positive charge is spread in deeper layers above the negative charge.…”

Section: Introductionmentioning

confidence: 99%

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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Increasing trend of lightning activity in the South Asia region

Cited by 51 publications

References 47 publications

Significantly Increased Lightning Activity Over the Tibetan Plateau and Its Relation to Thunderstorm Genesis

Significantly Increased Lightning Activity Over the Tibetan Plateau and Its Relation to Thunderstorm Genesis

Transport of substantial stratospheric ozone to the surface by a dying typhoon and shallow convection

Lightning Development over the Distinct Climate Regions of Uttarakhand, India

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