North American Regional Climate Change Assessment Program Data

The North American Regional Climate Change Assessment Program (NARCCAP)
is a collection of regional climate model simulations downscaling global
simulations from CMIP3 to 50-km resolution over North America. The
collection was generated in 2007-2012 with the goal of investigating
uncertainties in regional scale projections of future climate and
generating climate change scenarios for use in impacts research.

NARCCAP comprises a set 12 simulations from 6 RCMs downscaling 4 GCMs
using a fractional factorial design, plus 1 simulation from each RCM
downscaling the NCEP reanalysis, and 2 global atmosphere-only timeslice
experiments. Historical data spans 1971-2000, and future data 2041-2070
using the SRES A2 emissions scenario. It includes more than 3 dozen 2D
variables and a half-dozen 3D variables at 3-hourly frequencies, plus a
handful of static and daily variables. All data is at 50-km spatial
resolution over a domain that covers most of North America and is stored
in CF-compliant netCDF files.

More detailed documentation of the dataset is available at:
https://narccap.ucar.edu