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Investigating Physics Behind the Rapid Intensification and Catastrophic Landfall of Cyclone ‘Titli’ (2018) in the Bay of Bengal

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Title Investigating Physics Behind the Rapid Intensification and Catastrophic Landfall of Cyclone ‘Titli’ (2018) in the Bay of Bengal
 
Creator Singh, Vivek
Srivastava, Atul Kumar
Samanta, Rajeeb
Kumar, Arun
Singh, Abhay K
 
Subject Tropical cyclones
Sea surface temperature
Latent heat flux
Tropical cyclone heat potential
Relative vorticity
 
Description 175-181
The present study delineates the role of ocean conditions in the genesis and rapid intensification (RI) of a very severe
cyclonic storm (VSCS) ‘Titli’ (2018). The tropical cyclone (TC) formed over the warm waters of the east-central Bay of
Bengal during 08-13 October 2018. According to the India Meteorological Department (IMD), the cyclone was the most
damaging storm to hit any coast of India in the year 2018, making it a special case of analysis. In the present study, 10 m
winds , Sea Surface Temperature (SST), Latent heat flux, and relative vorticity (RV) during the lifespan of the cyclone are
studied using ECMWF reanalysis V5 (ERA5) prepared by European Centre for Medium Range Weather Forecasts
(ECMWF). Further, the Tropical Cyclone Heat Potential (TCHP) data generated by the Indian National Centre for Ocean
Information Services (INCOIS) in Hyderabad is used to study the important information about the oceanic conditions of the
TC. The investigation of the TC’s sea surface temperature data from satellites reveals that a relatively warmer SST prevailed
during the cyclone’s occurrence, which may have been the primary factor in the TC’s rapid intensification. Further, the
latent Heat flux (LHF) and TCHP values were also found high in conjunction with SST values. Our in-depth analysis reveals
that the 10 m winds embedded into the TC were extremely strong, exceeding 12 m/s prior to the landfall. A positive and
large value of RV was found when the TC was about to hit the coast. This may be one of the reasons behind the
‘catastrophic landfall’ of the cyclone.
 
Date 2023-03-22T10:16:45Z
2023-03-22T10:16:45Z
2023-03
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/61578
https://doi.org/10.56042/ijpap.v61i3.70531
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.61(03) [March 2023]