<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Andreas, are you sure that you are extracting your boundary conditions at the correct location?<div class="">You could be off by one grid cell, which could cause this problem. Dimitris</div><div class=""><br class=""></div><div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 18, 2020, at 6:21 PM, Andreas Klocker <<a href="mailto:andreas.klocker@utas.edu.au" class="">andreas.klocker@utas.edu.au</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Hi,</div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">I am trying to set up a regional model configuration with OBCS. For some reason the model seems to introduce salinities where I actually have bathymetry (see attached figure; bathymetry left, salinities right). Salinities this low definitely do not exist in the files containing the bounday conditions. Is it necessary to set the open boundary exactly to where I have ocean, or should the bathymetry file take care of this by telling the model there should be nothing happening in case of zero water depth?</div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Here's my data.obcs file:</div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><span class=""><br class=""></span></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><span class=""># Open-boundaries<br class=""></span><div class=""> &OBCS_PARM01<br class=""></div><div class=""><br class=""></div><div class=""> OB_Iwest = 600*1,<br class=""></div><div class=""> OB_Ieast = 600*-1,<br class=""></div><div class=""> OB_Jsouth = 2600*1,<br class=""></div><div class=""> OB_Jnorth = 2600*-1,<br class=""></div><div class=""><br class=""></div><div class=""> useOBCSsponge = .TRUE.,<br class=""></div><div class=""> useOBCSbalance = .TRUE.,<br class=""></div><div class=""> useOBCSprescribe = .TRUE.,<br class=""></div><div class=""><br class=""></div><div class=""> useOrlanskiWest = .FALSE.,<br class=""></div><div class=""> useOrlanskiEast = .FALSE.,<br class=""></div><div class=""> useOrlanskiSouth = .FALSE.,<br class=""></div><div class=""> useOrlanskiNorth = .FALSE.,<br class=""></div><div class=""><br class=""></div><div class=""> OBWuFile = 'OWU',<br class=""></div><div class=""> OBWvFile = 'OWV',<br class=""></div><div class=""> OBWtFile = 'OWT',<br class=""></div><div class=""> OBWsFile = 'OWS',<br class=""></div><div class=""><br class=""></div><div class=""> OBEuFile = 'OEU',<br class=""></div><div class=""> OBEvFile = 'OEV',<br class=""></div><div class=""> OBEtFile = 'OET',<br class=""></div><div class=""> OBEsFile = 'OES',<br class=""></div><div class=""><br class=""></div><div class=""> OBSuFile = 'OSU',<br class=""></div><div class=""> OBSvFile = 'OSV',<br class=""></div><div class=""> OBStFile = 'OST',<br class=""></div><div class=""> OBSsFile = 'OSS',<br class=""></div><div class=""><br class=""></div><div class=""> OBNuFile = 'ONU',<br class=""></div><div class=""> OBNvFile = 'ONV',<br class=""></div><div class=""> OBNtFile = 'ONT',<br class=""></div><div class=""> OBNsFile = 'ONS',<br class=""></div><div class=""><br class=""></div><div class=""># OBCS_monitorFreq= 86400.,<br class=""></div><div class=""># OBCS_monSelect = 1,<br class=""></div><div class=""> &<br class=""></div><div class=""><br class=""></div><div class=""># Orlanski parameters<br class=""></div><div class=""> &OBCS_PARM02<br class=""></div><div class=""># Cmax=0.45,<br class=""></div><div class=""># cVelTimeScale=1000.,<br class=""></div><div class=""> &<br class=""></div><div class=""><br class=""></div><div class=""> &OBCS_PARM03<br class=""></div><div class=""> Urelaxobcsinner=864000.,<br class=""></div><div class=""> Urelaxobcsbound=86400.,<br class=""></div><div class=""> Vrelaxobcsinner=864000.,<br class=""></div><div class=""> Vrelaxobcsbound=86400.,<br class=""></div><div class=""> spongeThickness=40.,<br class=""></div><div class=""> &<br class=""></div><span class=""></span><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Thanks in advance!</div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Andreas</div><div style="margin-top: 0px; margin-bottom: 0px; caret-color: rgb(0, 0, 0); font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; 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