Simulation of greenhouse gas transfer between lakes and the atmosphere

What is it about?

We compare lake models with different complexity focusing on the key factors (e.g., eddy diffusivity) which can have an influence on the distribution of the dissolved gases in water. For the first time, we compare the biogeochemical modules in the ALBM and LAKE models. The result showed a good agreement with observed data (O2), but not for CO2. It indicates the need to improve the representation of physical and biogeochemical processes in lake models.

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Why is it important?

To foster enhanced forecasting ability in numerical weather prediction systems and climate models with respect to he influence of open water bodies an improvement of lake models remains essential. This especially applies to the limited simulation capabilities of biogeochemical processes in lakes and greenhouse gas exchanges with the atmosphere.