Association of lightning with LCL, EL, humidity at 850 mb and at 200 mb during various CAPE, over northern India
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Date
2024
Journal Title
Science of the Total Environment
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Abstract
Association of lightning with Lifting Condensation Level (LCL), Equilibrium Level (EL), K Index, and humidity at 850 mb and 200 mb in 2019 and 2020 over National Capital Region (Delhi) (Lat: 27�N -29�N, Lon: 76�E-78�E) is investigated using in-situ observation data. Study shows high lightning activity during low LCL, and vice versa. This high lighting and low LCL is associated with high relative humidity at 850 mb, and high �K� index. Low LCL and high relative humidity (low dew point depression) at 850 mb helps in generating super cell thunderstorms with spinning/tornado updraft. It is seen that asymmetric LCL height and relative humidity at 850 mb is the prime causes for uneven seasonal lightning in 2019 and 2020 over the region, despite more or less same seasonal aerosol and relative humidity. Anvil clouds behave uneven with time, despite, unanimous cloud top glaciation. � 2024 Elsevier B.V.
Description
Keywords
EL, K index, LCL, Lightning, North India, Relative humidity