Biogeochemistry-Atmosphere Processes in the Bay of Bengal - First results from SO305 BIOCAT-IIOE2

durch Hermann Bange (GEOMAR)

Mittwoch 06.05.2026, 13:15 → 14:30 Europe/Berlin

5-1.213 - PAZIFIK / PACIFIC- Rechte Seite - Großer, unterteilbarer Konferenzraum (GEOMAR - Standort Ostufer / GEOMAR - East Shore)

Abstract:

The overarching goal of SO305 BIOCAT-IIOE2 was to quantify the key microbial 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 (R/V) 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 atmospheric measurement program to investigate the effects of atmospheric inputs on water column processes. 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. Here I will present first results from SO305 with a focus on the nitrogen cycle.

Meeting link:
https://geomar.webex.com/geomar/j.php?MTID=mf6b13ee3c306aa2453134001ba12a3d8