Satellite-observed lightning hotspots in India and lightning variability over tropical South India

نویسندگان

چکیده

Lightning characteristics in India are examined with satellite-based Imaging Sensor (LIS) and ground-based Indian Detection Network (ILDN). LIS observations indicated that synoptic weather systems major contributors of lightning hotspots. Western disturbances (mid-tropospheric extratropical origin) were the greatest contributor Himalayas (93%), tropical cyclonic storms low-pressure (oceanic key parts eastern (43%), lower tropospheric troughs other For first time, this study reported occurrence significantly high activity before active monsoon spells Central region (65–87° E, 18–27° N). Consequently, could be used to predict spells. Harmonic analysis was diurnal lightning-flash density. The maximum observed standardized amplitude 0.35, explained variation 15%. Also, for we compared ILDN data observations, found good agreement regarding variability. showed an increase annual South-western (SWI), results also suggested during El Niño negative Ocean Dipole periods, SWI experiences above-average activity.

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ژورنال

عنوان ژورنال: Advances in Space Research

سال: 2021

ISSN: ['0273-1177', '1879-1948']

DOI: https://doi.org/10.1016/j.asr.2021.04.009