The document below describes the recommended scenarios, resolution, and time periods that should be utilised.

CORDEX experiment design for dynamical downscaling of CMIP5 (General instructions for CORDEX integrations)

CORDEX Archive specification

The  CORDEX-CMIP5 Archiving Specifications for Dynamical Downscaling
specifies technical aspects of CORDEX archive file and data formats, as well as archive content. It includes a common naming system, the Data Reference Syntax (DRS), which allows the identification of data sets wherever they might be located in a distributed CORDEX archive.

Variables requirements

The CORDEX Variables requirement document defines what CORDEX simulation variables should be saved, their attributes (including short name, long name, units) and time resolution.