01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-06-0266 |
| Title of Abstract | Spatial and Seasonal Variability of Air-Sea CO2 Fluxes along the Southern Bay of Bengal from In-Situ Observations. |
| Authors | Anju Kumari*, Abhinav Gummalla, P V Nagamani, Haritha M |
| Organisation | National Remote Sensing Centre (ISRO) |
| Address | National Remote Sensing Centre -ISRO, Balanagar, Hyderabad Hyderabad, Telangana, India Pincode: 500625 E-mail: arachiyata@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | Coastal oceans are increasingly recognized as dynamic zones of carbon exchange, yet the processes governing air⿿sea CO⿿ fluxes in the North Indian Ocean remain poorly constrained. In this study, we present in-situ measurements collected along the southeastern coast of India (Bay of Bengal) for the year 2024. Sampling campaigns were conducted at key coastal sites- Pazhayar, Marakanam, and Pondicherry, where parameters such as pCO⿿, Dissolved Inorganic Carbon (DIC), Total Alkalinity, temperature, and salinity were systematically measured. The observations reveal distinct spatial and seasonal variations in CO⿿ fluxes. The Pazhayar coastal waters predominantly acted as a net CO⿿ source, whereas Marakanam exhibited consistent uptake, functioning as a sink. Pondicherry displayed intermediate and variable behavior. These patterns reflect the combined influence of monsoonal forcing, freshwater influx, stratification, and biological activity on carbonate chemistry and gas exchange. The results underscore the value of in-situ observations for capturing short-term and localized flux variability, which often remains unresolved by satellite approaches. Establishing such baseline assessments is essential for constraining regional carbon budgets and improving our understanding of the coastal ocean⿿s role in regulating atmospheric CO⿿. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Air⿿sea CO⿿ exchange, Coastal carbon fluxes, In-situ measurements, Bay of Bengal, |
| For Awards | yes |
| Date Of Birth | 14-04-1997 |
| ECSN Registration Number | IIOE2-ECSN-0253 |