Issues with the bottom pixels of `RDRSv2.1`

[kasra-keshavarz]

The 40 bottom pixels in RDRSv2.1 are not valid and should be removed from further evaluations - the following is the text received from ECCC:

While doing some verifications of the RDRS_v2.1 product, ECCC has found out that there is a discontinuity at the very south of the domain (see figure attached). This map represents the 24-h precipitation accumulated from April to May 2014 (from the CaPA offline reanalysis v2.1). This is due to differences in spatial resolution of products used to produce RDRS (GDPS/RDPS). Please consider not using the most southern 40 pixels of the current RDRS_v2.1 product. These grid cells will be removed from any further RDRS product, but current ones will not be post-processed.

[kasra-keshavarz]

RDRSv3.1 should resolve this issue. However, a note for rdrsv2.1's recipe should be added.