| Abstract Submission No. | ABS-02-0228 |
| Title of Abstract | Quantifying the wave effects on momentum flux in low to medium wind regime in the Bay of Bengal |
| Authors | Abhijith Raj*, Dr. B Praveen Kumar, Raju VSJ, Pattabhi Rama Rao E, Suresh Kumar, Shivaprasad S |
| Organisation | Indian National Centre for Ocean Information Services |
| Address | INCOIS, Pragathi Nagar Hyderabad, Telangana, India Pincode: 500090 E-mail: a.raj-rf@incois.gov.in |
| Country | India |
| Presentation | Poster |
| Abstract | Accurate estimates of momentum exchange between the ocean and atmosphere play a crucial role in understanding and modeling air-sea interactions. This study uses 16-month-long eddy covariance data collected from a moored buoy in the northern Bay of Bengal to investigate the momentum transfer under light to moderate winds under varying wave conditions. Previous studies have demonstrated significant variability in drag coefficient estimates, especially at low wind speeds, indicating the influence of swells and rapidly changing winds. Therefore, this study specifically examines the impact of fast-traveling ocean swells and their direction on momentum transfer, as these swells have been observed to affect weak wind dynamics at sea profoundly. Additionally, the commonly used bulk formulations based on the Monin-Obukhov similarity theory are thoroughly evaluated. By accounting for the effects of swells and other relevant factors, this research seeks to improve the estimation of the drag coefficient over the sea and advance bulk formulations to capture these intricate interactions accurately. Ultimately, the outcomes of this study will contribute to a deeper understanding of air-sea interactions and their implications for improving weather and climate modeling. |
| Keywords | Eddy covariance,Air-sea fluxes,Wind Stress,Wind Waves,Swell |
| For Awards | yes |