Scholarlink

<p>Overshooting Convective Storms (OCSs) are deep convective storms penetrating the tropopause level, typically 16–20&#xa0;km in the tropical region. The present study details one such OCS that occurred on 01 June 2018 along the northern parts of the Western Ghats (WG) using multi-sensor observations. OCSs are identified using lapse-rate tropopause height (~ 16.3&#xa0;km) derived from 7 years of radiosonde observations over WG. The present study identified 16,587 OCS grid points within the radar domain (~ 127&#xa0;km range). The Radar observations revealed that the OCS reaches beyond 17.5&#xa0;km, well above the mean tropopause level. The near-surface reflectivity reaches beyond 55 dBZ, indicating very intense convection. Large hydrometeors and hails are observed at the surface during OCS. The disdrometer recorded intense rainfall beyond 100&#xa0;mm/h. The lightning location network observations indicate the dominance of intra-cloud lightning during this event. The association of convective storms with lightning reveals that the storms with reflectivity &gt; 45 dBZ are the primary contributors to lightning activity. ERA5 reanalysis shows favorable environmental conditions, with high Convective Available Potential Energy (~ 2000&#xa0;J/kg), reduced convective inhibition, and strong updrafts, supporting the vertical development of the storm. Satellite observations indicate the association of OCS with mesoscale convective system. The present study provides a detailed understanding of storm characteristics, specifically the OCS and their association with cloud electricity over WG, which will help identification of these high-impact weather systems using radar and nowcasting, further enhancing the forecasting skill in predicting lightning and heavy rainfall over complex terrain.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A case study on overshooting convective storms in the westernghats region– multi-sensor approach

  • 期刊论文

  • 发表日期：

    2026年6月26日

查看全文
  • Harikrishna Devisetty,
  • U. V. Murali Krishna,
  • Ambuj K. Jha,
  • Subrata K. Das,
  • Kaustav Chakravarty,
  • D Manoj,
  • Gopinadh Konda,
  • B. Padma Kumari,
  • G. Pandithurai

摘要

Overshooting Convective Storms (OCSs) are deep convective storms penetrating the tropopause level, typically 16–20 km in the tropical region. The present study details one such OCS that occurred on 01 June 2018 along the northern parts of the Western Ghats (WG) using multi-sensor observations. OCSs are identified using lapse-rate tropopause height (~ 16.3 km) derived from 7 years of radiosonde observations over WG. The present study identified 16,587 OCS grid points within the radar domain (~ 127 km range). The Radar observations revealed that the OCS reaches beyond 17.5 km, well above the mean tropopause level. The near-surface reflectivity reaches beyond 55 dBZ, indicating very intense convection. Large hydrometeors and hails are observed at the surface during OCS. The disdrometer recorded intense rainfall beyond 100 mm/h. The lightning location network observations indicate the dominance of intra-cloud lightning during this event. The association of convective storms with lightning reveals that the storms with reflectivity > 45 dBZ are the primary contributors to lightning activity. ERA5 reanalysis shows favorable environmental conditions, with high Convective Available Potential Energy (~ 2000 J/kg), reduced convective inhibition, and strong updrafts, supporting the vertical development of the storm. Satellite observations indicate the association of OCS with mesoscale convective system. The present study provides a detailed understanding of storm characteristics, specifically the OCS and their association with cloud electricity over WG, which will help identification of these high-impact weather systems using radar and nowcasting, further enhancing the forecasting skill in predicting lightning and heavy rainfall over complex terrain.