General circulation models (GCMs) are used to simulate retrospective, contemporary and potential future climate projections for quantitative climate impact assessments (Wilks, 1999; Karl and Trenberth, 2003; Fowler et al., 2007). However, the coarse resolution of existing GCMs (model grids typically > 100 km by 100 km) precludes the reproduction of realistic local-scale circulation patterns or the resulting local-scale spatial variability of climate variables. Furthermore, mismatch of the spatial resolution between GCMs and hydrologic models generally precludes the direct use of GCM outputs to predict hydrologic impacts.
This document provides instructions and links to the codes and data required to produce BCSA downscaled results for 9 CMIP5 GCMs. The codes and data in this archive can be used to produce BCSA downscaled retrospective and future climate projections at a 12 km by 12 km resolution for watersheds within the Southeast USA. The data and original codes were used in Chang, S., Graham, W., Geurink, J., Wanakule, N., and Asefa, T.: Evaluation of impacts of future climate change and water use scenarios on regional hydrology, 2018 Hydrol. Earth Syst. Sci., 22, 4793-4813, 2018.
The research was supported in part by the Florida Water and Climate Alliance.
