Ījayamohan RS, Merryfield WJ, Kharin VV (2010) Increasing trend of synoptic activity and its relationship with extreme rain events over central India. The significance of the present study lies in delineating the structure and dynamics of the extreme precipitation event using C-band polarimetric DWR observations and discussing the potential candidates in triggering the event.Īgel L, Barlow M, Colby F, Binder H, Catto JL, Hoell A, Cohen J (2018) Dynamical analysis of extreme precipitation in the US northeast based on large-scale meteorological patterns. The weakening of TEJ at the upper troposphere resulted in the decrease of vertical wind shear, which is a favourable condition for the vertical growth of convective clouds. It is observed that the low-level convergence during the event played a key role in the development of persistent convection. Apart from the DWR observations, prevailing dynamics such as tropical easterly jet (TEJ), low-level jet (LLJ) along with vertical velocity are also investigated, which showed distant signatures leading to the extreme event. 12th to 17th August 2018), and the time evolution of the radar reflectivity structure is examined very closely to understand the structure and dynamics of this unprecedented event. The DWR observations were carried out during several episodes of extreme rainfall (i.e. This is the first time that DWR polarimetric observations have been used for investigating an extreme weather event in India. The present study focuses on investigating the spatial and vertical structure of precipitating clouds and their microphysical properties during this extreme precipitation event using C-band polarimetric Doppler Weather Radar (DWR) observations over Thumba (8.5°N, 77☎), India. These heavy rains led to major flooding, which was one of the worst natural disasters experienced by the state in the last hundred years. Recently, the state of Kerala (India) experienced extreme rainfall events during August 2018.
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