01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-05-0254 |
| Title of Abstract | From Ocean to Coast: Upper-Ocean and Coastal Water Level Response to Cyclone Hamoon in the Bay of Bengal |
| Authors | P Suneeta*, T V S Udaya Bhaskar , E. Pattabhi Rama Rao |
| Organisation | INCOIS |
| Address | P. Suneeta, Prathap Neelayam, Pragathi nagar, Nizampet, Hyderabad-500090 main road, Telangana, India Pincode: 500090 E-mail: ponnagantisuneeta@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | Tropical cyclones significantly affect upper-ocean structure and coastal water levels. This study examines the evolution of sea surface temperature (SST), sea surface height anomaly (SSHA), depth of the 26°C isotherm (D26), tropical cyclone heat potential (TCHP), ocean heat content (OHC), 0-100m Salinity, Sea Surface salinity (SSS) and temperature before, during and after Cyclone Hamoon (October 2023) in the Bay of Bengal, in relation to the Genesis Potential Index (GPI) derived from atmospheric and oceanic parameters. Changes in upper-ocean stratification and cyclone translation speed were also analyzed to understand air-sea interaction processes. Satellite and reanalysis datasets were combined with tide gauge observations from Paradeep, Gopalpur and Garden Reach (used as a control site). Results reveal SST cooling, reduced TCHP and OHC and a shoaling of D26 during the cyclone⿿s peak intensity. Stratification weakened markedly along the cyclone track, coinciding with a decrease in translation speed, which enhanced the oceanic response. Tide gauge records at the affected sites captured positive anomalies that coincided closely with the cyclone⿿s landfall. These findings highlight the coupled ocean-coast response to Cyclone Hamoon and emphasize the value of integrating tide gauge observations with upper-ocean diagnostics for improved cyclone impact assessment. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Keywords: Tropical cyclone, Bay of Bengal, Genesis Potential Index (GPI), Sea surface temperature (SST), Sea surface height anomaly (SSHA), Tropical cyclone heat potential (TCHP) and Tide gauge observations. |
| For Awards | yes |
| Date Of Birth | 20-08-1989 |
| ECSN Registration Number | IIOE2-ECSN-0156 |