One of the main limitations of SDSM is the lack of multiple GCMs for the AR5 RCPs. To gain insights into climate model uncertainty for different RCPs,we can deployed the NEX-GDDP data (https://cds.nccs.nasa.gov/nex-gddp/).

In NEX-GDDP data, different RCPs are deploy and can be compare to the projection from the SDSM model.

Reference:

Daksiya, V., Mandapaka, P., & Lo, E. Y. (2017). A comparative frequency analysis of maximum daily rainfall for a SE Asian region under current and future climate conditions. Advances in Meteorology, 2017.