Hi Camille > On 17 Mar 2017, at 14:50, Camille Mazoyer <mazoyer at univ-tln.fr> wrote: > > So If I write OB_Jsouth = 170*1,30*0, I give (170,NZ) arrays for all variables on south OBC. Is that right? You still need (200,Nz) arrays. OB_Jsouth just determines, which points are treated a OB points. M.