Extrapolation through Models
Since benthocosm and mesocosm studies can only ever reflect small-scale conditions, it is important to extrapolate the results to larger spatial (regional, global) and temporal (years to decades) scales. This is done in RETAKE in several work packages by incorporating numerical models.
Using results from benthocosm and mesocosm studies as well as observational data of natural variability in the sea, the efficiency of alkalinity enhancement (AE) and potential impacts on the ecosystems located there will be investigated for case studies in both the North Sea (WP2.2) and the Baltic Sea (WP2.4). In addition, the influences of hydrogeological or climatic and environmental conditions at the sediment-water interface on feasible alkalinisation rates will be assessed for the introduction of alkaline material. Model studies will be used to estimate and map particularly suitable areas in national and international waters (WP2.3).
Two global Earth system models of different model architecture will be used to investigate the efficiency and biogeochemical impacts of different AE scenarios in a global context (WP3.2). Different parameters such as CO2 uptake, storage or leakage, and impacts on ocean biogeochemistry depending on regional environmental factors will be analysed to develop estimates of optimal strategies for the deployment of AE as well as for monitoring the impacts and side effects.
TEAM
PI’s
- Dr. Ute Daewel (Hereon)
- Dr. Judith Hauck (AWI)
- Dr. David Keller (GEOMAR)
- Prof. Nils Moosdorf (ZMT)
- Prof. Andreas Oschlies (GEOMAR)
- Dr. Hagen Radtke (IOW)
- Prof. Gregor Rehder (IOW)
- Dr. Corinna Schrum (Hereon)
Scientists
- Dr. Moritz Mathis (Hereon)
- Neha Mehendale (GEOMAR)
- Dr. Johannes Pein (Hereon)
Postdoctoral Researchers
- Dr. Anna-Adriana Anschütz (IOW)
- Dr. Feifei Liu (Hereon)
- Dr. Murugan Ramasamy (ZMT)
Doctoral Candidates
- Tanvi Nagwekar (AWI)
Alumni
- Dr. Cara Nissen (AWI)