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H S Chaudhari
Articles written in Journal of Earth System Science
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Volume 119 Issue 5 October 2010 pp 603-615
Thunderstorms over a tropical Indian station, Minicoy: Role of vertical wind shear
H S Chaudhari G K Sawaisarje M R Ranalkar P N Sen
In this study,an attempt has been made to bring out the observational aspects of vertical wind shear in thunderstorms over Minicoy.Case studies of thunderstorm events have been examined to find out the effect of vertical wind shear and instability on strength and longevity of thunderstorms.Role of vertical wind shear in thunderstorms and its mechanism has been explored in this study.Results reveal that for prolonged thunderstorms high and low instability along with moderate to high vertical wind shear (moderate:0.003S−1 ≤ vertical wind shear ≤ 0.005S−1 and high: < 0.005S−1) play a significant role in longevity and strength of thunderstorms.The mechanism of vertical wind shear in thunderstorms was investigated in a few cases of thunderstorm events where the duration of thunderstorm was covered by the radiosonde/rawin ascent observation taken at Minicoy. Empirical model has been developed to classify thunderstorm type and to determine the strength and longevity of thunderstorms.Model validation has been carried out for selected cases.Model could classify thunderstorm type for most of the cases of thunderstorm events over island and coastal stations.
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Journal of Earth System Science
Volume 132, 2023
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