Software Engineering Designs for Super-Modeling Different Versions of CESM Models using DART

The super-modeling approach connects different models together at run time in order to provide run time feedbacks between the models and therefore synchronize the models together. This method thus reduces model bias further than after-the-fact averaging of model output. We explore different designs to connect different configurations and versions of the IPCC class climate model the Community Earth System Model (CESM) together. We use the Data Assimilation Research Test-bed (DART) software to provide data assimilation as well as provide a software framework to link different model configurations together. We also show results from some simple experiments that demonstrate the ability to synchronize different model versions together.