Trends and variability of oxygen inventory, supply and consumption in the eastern tropical North Atlantic (ETNA) oxygen minimum zone (A04)

• Subject Area: Oceanography
• Term: from 2008 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 27542298

The objective of A4 is to understand how the oxygen minimum zone (OMZ) of the Eastern Tropical North Atlantic is maintained by ocean circulation and what the scales are of temporal variability in OMZs and the physical supply of oxygen to them. It is based on shipboard, glider, and continuous long-term moored observations. A special focus is on tracer measurements for the evaluation of water mass age and consumption within the OMZ. A4 will determine oxygen and current variability on intra-seasonal to decadal time scales and compare observational results with SFB 754 model simulations aiming at understanding causes and mechanisms of oxygen variability in the ETNA.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 754: Climate - Biogeochemistry Interactions in the Tropical Ocean
• Applicant Institution: Christian-Albrechts-Universität zu Kiel
• Co-Applicant Institution: GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
• Project Heads: Professor Dr. Peter Brandt; Professor Dr. Arne Körtzinger