The North American CORDEX Program

Regional climate change scenario data and guidance for North America, for use in impacts, decision-making, and climate science.

The NA-CORDEX data archive contains output from regional climate models (RCMs) run over a domain covering most of North America using boundary conditions from global climate model (GCM) simulations in the CMIP5 archive. These simulations run from 1950–2100 with a spatial resolution of 0.22°/25km or 0.44°/50km. Data is available for impacts-relevant variables at daily and longer frequencies in CF-compliant netCDF format.

Download data from the NA-CORDEX search page on the NCAR Climate Data Gateway.

Data is also available in cloud-friendly Zarr format on AWS.

NOTE: Prior to 2021-11-19, there was an error in the bias-corrected data in the archive. This error has now been resolved. If you downloaded bias-corrected data before this date, you should replace it with the fixed data. See Bias Correction Errors for more details. Apologies for any inconvenience.

This data is freely available under the Terms of Use. When publishing research based on this data, be sure to include a dataset citation like the following:

Mearns, L.O., et al., 2017: The NA-CORDEX dataset, version 1.0. NCAR Climate Data Gateway, Boulder CO, accessed [date], https://doi.org/10.5065/D6SJ1JCH

  • See Data for a full description of the available data and detailed download instructions.
  • See Simulations for information about the models and RCM/GCM combinations.
  • See Guidance for information about how to properly make use of this data.
  • See CORDEX for more information about the international program that NA-CORDEX is a component of.