01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-05-0258 |
| Title of Abstract | The Evaluation of Carnot Efficiency in Cyclones over the Arabian Sea: Decadal Trends and the Role of Eliassen-Palm Flux in recent decades |
| Authors | Arika Amasarao*, P Sunitha |
| Organisation | Department of Meteorology and Oceanography, Andhra University |
| Address | VIZAG Visakhapatnam, AP, India Pincode: 530003 E-mail: amasarao.arika@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | Tropical cyclones are natural heat engines, powered by the latent heat released from the ocean. This study investigates the changes in the Carnot efficiency of cyclones over the Arabian Sea from 1991 to 2020, with a focus on the impact of climate change and decadal variability. The study calculates the theoretical maximum efficiency of energy conversion using sea surface temperature (SST) and upper atmospheric temperature data for each decade, applying the Carnot efficiency formula. To understand the underlying atmospheric dynamics, the Eliassen-Palm (EP) flux is incorporated to examine energy and momentum transport in the cyclone systems. The EP flux is used to assess how the vertical energy flux and momentum transport between the ocean surface and upper atmosphere have evolved, affecting the intensity and efficiency of cyclones over time. The results show an increase in Carnot efficiency, reflecting rising SSTs and potentially more efficient energy conversion in stronger cyclones. This analysis offers insights into how climate change has impacted both the thermodynamic efficiency of cyclones with implications for regional climate patterns in the Arabian Sea. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Carnot efficiency, Eliassen-Palm flux, Arabian Sea, Climate change |
| For Awards | yes |
| Date Of Birth | 14-06-1993 |
| ECSN Registration Number | IIOE2-ECSN-0209 |