Fill CRUJRA DATM over Antarctica and Greenland with GSWP3 data#3773

ekluzek merged 2 commits intoESCOMP:b4b-devESCOMP/CTSM:b4b-devfrom

wwieder:b4b-dev_CRUJRAwwieder/ctsm:b4b-dev_CRUJRACopy head branch name to clipboard