<div dir="ltr">Hi all,<div><br></div><div>I am running a regional ocean model with the OBCS package. When I use the Stevens boundary conditions, the model always crashes with "stops due to EXTREME Pot.Temp". The model is OK if I turn off the Stevens BC. I have tried different inflows(outflow) at the Stevens boundary, which encounter the same crashing. The sponge boundary layer didn't help either. I also tried different relaxation time, no help.</div><div><br></div><div>Attaching my data.obcs file.</div><div>  <br>Any ideas will be grateful.</div><div><br>Lambert</div><div><br></div><div># ***************<br># Open boundaries<br># ***************<br> &OBCS_PARM01<br># This flag turns off checking and fixing problematic topography across<br># open boundaries.<br> OB_Jnorth = 360*-1,<br> OB_Jsouth = 360*1,<br> OB_Iwest = 528*1,<br> OB_Ieast = 528*-1,<br> useOBCSprescribe=.TRUE.,<br> useStevensWest = .TRUE.,<br> useStevensNorth = .TRUE.,<br># useOBCSsponge=.TRUE.,<br> useOBCSbalance=.FALSE.,<br># OBCS_balanceFacE = 1.,<br># OBCS_balanceFacW = 1.,<br># OBCS_balanceFacN = 1.,<br># OBCS_balanceFacS = 1.,<br><br> OBNsFile='sn.scs',<br> OBNtFile='tn.scs',<br> OBNvFile='vn.scs',<br> OBNuFile='un.scs',<br><br> OBSsFile='ss.scs',<br> OBStFile='ts.scs',<br> OBSvFile='vs.scs',<br> OBSuFile='us.scs',<br><br> OBEsFile='se.scs',<br> OBEtFile='te.scs',<br> OBEvFile='ve.scs',<br> OBEuFile='ue.scs',<br><br> OBWsFile='sw.scs',<br> OBWtFile='tw.scs',<br> OBWvFile='vw.scs',<br> OBWuFile='uw.scs',<br> &<br><br># &OBCS_PARM03<br># Urelaxobcsinner=864000,<br># Urelaxobcsbound=864000,<br># Vrelaxobcsinner=864000,<br># Vrelaxobcsbound=864000,<br># spongeThickness=5,<br># &<br><br> &OBCS_PARM04<br> TrelaxStevens = 86400.,<br> SrelaxStevens = 86400.,<br> &<br></div></div>