Hagen Radtke from IOW is visiting Baltic Nest Institute and will give a seminar at the Baltic Sea Centre with the title: Extending the Baltic Sea ecosystem model ERGOM into the sediment - an early diagenetic modelling approach.
We are currently extending our ecological model ERGOM into the sediment.
The result will be a coupled ecosystem - early diagenesis model.
Although some processes are the same in the sediment and the water column,
several additional processes, especially concerning the iron cycle,
had to be added in the sediment to reproduce realistic pore water profiles.
This talk will illustrate three things:
- Our approach which processes and state variables to include to make the
model able to realistically simulate diagenesis in sandy to muddy sediments
with special focus on pH in the pore water
- Efficient numerical treatment of vertical diffusion, especially of oxygen,
to allow for large time steps in spite of thin layers
- Automatic code generation as a method which allows efficient model development
The work is part of the project SECOS which aims at quantifying sedimentary
services (denitrification, retention, burial of nutrients) in the German
You are welcome to join the seminar on March 30 2015, 11:00-12:00 in the Baltic Sea Centre conference room, Frescati Backe, 4th floor.