LakeMIP II PROJECTS______________________________________________
This next phase - LakeMIP II - will focus upon these subprojects:
- Model ensemble (Klaus Joehnk)
- Harp Lake model (Victor Stepanenko)
- Single column lake-atmosphere modelling (Stéphane Goyette
- Fully coupled 3D lake-atmopshere RCM intercomparison (Wim Thiery)
1. Model ensemble
- Use a large number of lake models to simulate a large number of lakes in different climate regions
- Determine differences in lake characteristics: surface temperature, stratification (thermocline depth), seasonal characteristics
- Apply all models on all lakes with a single set, per model, of parameters to test model generality
- Use a subset of well monitored lakes with all models individually calibrated to test specific model characteristics
- 16 lake models, 17 lakes (will be reduced to a set of 10)
2. Harp Lake model
- Test the effect of stratification on the transport across the thermocline uding different lake models
- Simulate gas exchange with the atmodphere in and out
- Test the effect of ice cover on gas exchange
- Focus on carbon dioxyde and methane
3. Single-column atmosphere-lake coupled model
- A Single Column Model (SCM) for the atmosphe will be used for an assessment of many lake models over a large variety of lake environments. This may be considered a necessary step before implementing a lake model within a particular RCM / NWP. In order to do so, a particular lake model, as iwas the case for SIMSTRAT, needs to be converted into a subroutine and the added into the SCM library.
- One can use this approach to assess many lake model performances over Lake Geneva (thermal profiles and other variables are available), to evaluate the impacts of non-linearities (and feedbacks) in the vertical dimension (a model option allows a "one-way" driven lake model as is the case when this model is driven by observations where no feedback is allowed).
4. Fully coupled 3D lake-atmopshere RCM intercomparison
- Apply RCM(s) with operational lake model to a region with large lakes (Laurentian or African Great Lakes, Baikal,...)
- Unify initial and lateral boundary conditions and horizontal resolution, and compare the output.
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