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The current generation of earth system models used by the IPCC have proven useful in simulating and projecting global temperature change. However, deficiencies and biases persist in these projections, especially at regional and local scales. The typical spatial resolution of these models (~100 km) is too coarse to resolve regional details and fine-scale storm systems. The next generation of earth system models is targeted at resolutions ranging from high-resolution (~25 km) where frontal systems can be simulated and ultra-high resolution (~3 km) where clouds begin to be resolved. Modeling at these resolutions poses significant scientific and computational challenges, but it can provide important benefits for societal applications.

Topics to be discussed in the workshop will include:

•Status of current high/ultra-high resolution earth system modeling efforts, including the NSF MESACLIP and StormSPEED projects from TAMU and NCAR

•Future directions and challenges in increasing model resolution

•Applications of fine-resolution simulations for problems relevant to society, including extreme weather, hydrology and regional planning

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