Regional Dynamical Downscaling and the CORDEX Initiative

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Abstract

We review the challenges and future perspectives of regional climate model (RCM), or dynamical downscaling, activities. Among the main technical issues in need of better understanding are those of selection and sensitivity to the model domain and resolution, techniques for providing lateral boundary conditions, and RCM internal variability. The added value (AV) obtained with the use of RCMs remains a central issue, which needs more rigorous and comprehensive analysis strategies. Within the context of regional climate projections, large ensembles of simulations are needed to better understand the models and characterize uncertainties. This has provided an impetus for the development of the Coordinated Regional Downscaling Experiment (CORDEX), the first international program offering a common protocol for downscaling experiments, and we discuss how CORDEX can address the key scientific challenges in downscaling research. Among the main future developments in RCM research, we highlight the development of coupled regional Earth system models and the transition to very high-resolution, cloud-resolving models.

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APA

Giorgi, F., & Gutowski, W. J. (2015, November 4). Regional Dynamical Downscaling and the CORDEX Initiative. Annual Review of Environment and Resources. Annual Reviews Inc. https://doi.org/10.1146/annurev-environ-102014-021217

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