v2_cs510_Brix
Optimized solution described in Brix et al. (2015)

v3_cs510_Brix
Unpublished ECCO-Darwin v3 with linear piston velocity

v3_cs510_latest
Same as above with newer (checkpoint66o 2018/01/30) MITgcm code

v4_llc270
Optimized solution described in Carroll et al. (submitted 2019)

v5_llc270
Inclusion of LOAC (Land-Ocean-Aquatic-Coastal) forcing and
other improvements