Hi, in subroutiine growth.F: what does the variable WATR(1-Olx:Snx+Olx,1-Oly:Sny+Oly,Nsx,Nsy), defined in SEAICE.h and part of common block /SALT_WATER/, do? It's an identical copy of SEAICE_SALT, as far as I can see, and it's not used anywhere else in the code. Martin