01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-06-0109 |
| Title of Abstract | Biogeochemistry-atmosphere processes in the Bay of Bengal: First results from the SO305 BIOCAT-IIOE2 cruise in April/May 2024 |
| Authors | Hermann W. Bange*, Scientific party of SO305 |
| Organisation | GEOMAR Helmholtz Centre for Ocean Research Kiel |
| Address | GEOMAR Kiel, Germany, Germany Pincode: 24148 E-mail: hbange@geomar.de |
| Country | Germany |
| Presentation | Oral |
| Abstract | The overarching goal of SO305 BIOCAT-IIOE2 was to quantify key (micro)biological processes in the water column and ocean/atmosphere exchange fluxes to assess their impacts on the oxygen minimum zone (OMZ) of the Bay of Bengal. To this end, we conducted a measurement campaign with the research vessel (RV) SONNE from 10 April to 22 May 2024 (SO305) as part of the BIOCAT-IIOE2 project, covering the main carbon and nitrogen cycle processes and physical processes in the water column. The oceanic measurements were complemented by an intensive atmospheric measurement program to investigate the effects of atmospheric inputs on water column processes. During SO305 the GEOMAR Helmholtz Centre for Ocean Research Kiel, the University of Hamburg, the Helmholtz Centre Hereon (Geesthacht), the Leibniz Institute for Tropospheric Research (TROPOS, Leipzig), the University of Oldenburg and the University of Southern Denmark (SDU, Odense, DK) were collaborating. A team of 39 scientists, students and technicians made measurements in the water column and in the atmosphere at 33 regular CTD stations and five 24h-stations along a cruise track from the eastern equatorial Indian Ocean to the central Bay of Bengal. The results of SO305 BIOCAT-IIOE2 will contribute to a significantly improved assessment of the future impacts of global climate change and pollution for the ecosystems and the OMZ of the Bay of Bengal. |
| Are you part of IIOE-2 endorsed project | yes |
| Endorsed Project Number | IIOE2-EP07 |
| Keywords | Bay of Bengal, OMZ, air/sea exchange |
| For Awards | no |