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With high angular resolution and statistical precision, the GRAPES-3 muon telescope in Ooty, India records short-term muon intensity variations during major thunderstorms, known as thunderstorm-induced muon events (TIMEs). Recent multidisciplinary studies of TIMEs have explored seasonal variations, links to the global electric circuit, climate interactions, and long-term Boreal summer patterns. In this study, we analyze the evolution of a TIME recorded on March 20, 2020, by integrating GRAPES-3 muon data with lightning observations from four electric field mills (EFMs) at Ooty, the Indian Lightning Location Network (ILLN), and cloud-top temperature data from the INSAT-3DR satellite. This combined spatiotemporal dataset offers a novel, cross-disciplinary perspective on TIMEs.

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Evolution of a Thunderstorm-Induced Muon Event: Insights from the Ooty Muon Telescope, Electric Field, and Lightning Observations

  • 会议论文

  • 发表日期：

    2025年

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  • Pranaba K Nayak,
  • R. Biswasharma,
  • Pravata K Mohanty,
  • V. Gopalkrishnan,
  • SD Pawar

摘要

With high angular resolution and statistical precision, the GRAPES-3 muon telescope in Ooty, India records short-term muon intensity variations during major thunderstorms, known as thunderstorm-induced muon events (TIMEs). Recent multidisciplinary studies of TIMEs have explored seasonal variations, links to the global electric circuit, climate interactions, and long-term Boreal summer patterns. In this study, we analyze the evolution of a TIME recorded on March 20, 2020, by integrating GRAPES-3 muon data with lightning observations from four electric field mills (EFMs) at Ooty, the Indian Lightning Location Network (ILLN), and cloud-top temperature data from the INSAT-3DR satellite. This combined spatiotemporal dataset offers a novel, cross-disciplinary perspective on TIMEs.