<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">You need to extrapolate the T and S to all wet points. <div>I usually extrapolate in the vertical first, and then the horizontal. </div><div><br></div><div>You don’t want ICs with T=S=0 in your run.</div><div><br></div><div>Matt</div><div><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Jun 9, 2025, at 9:49 AM, Juncheng Zhang <juncheng.zhang@mail.utoronto.ca> wrote:</div><br class="Apple-interchange-newline"><div><meta charset="UTF-8"><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">Dear all,<span class="Apple-converted-space"> </span><o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">I am using MITgcm to run a 1km high-resolution simulation based on the tutorial reentrant channel,<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">I first run a 5 km simulation, then use the output of 5km run as the initial condition of my 1km run,<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">However, after I did the interpolation of 5 km output, and run the model, the error said below:<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">(PID.TID 0000.0001) *** ERROR *** INI_THETA: found 2891 wet grid-pts with theta=0 identically.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">(PID.TID 0000.0001) *** ERROR *** If this is intentional, you need to set checkIniTemp=.FALSE. in "data", namelist PARM05<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">I know wet grid-pts relates to the parameter hFac? But I don’t know how to fix it,<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">And I tried to ignore this error by adding checkIniTemp=.FALSE., however, the simulation is not stable, and I had weird numerical artifacts appearing.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;">Thank you in advance, I appreciate any help.<o:p></o:p></span></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 11pt;"><o:p> </o:p></span></div><div><p class="MsoNormal" style="margin: 0cm 0cm 6pt; font-size: 12pt; font-family: Aptos, sans-serif;"><b><span style="font-size: 11pt; font-family: Arial, sans-serif; color: rgb(0, 127, 163);"><o:p> </o:p></span></b></p><p class="MsoNormal" style="margin: 0cm 0cm 6pt; font-size: 12pt; font-family: Aptos, sans-serif;"><b><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(0, 127, 163);">Kind Regards<o:p></o:p></span></b></p><p class="MsoNormal" style="margin: 0cm 0cm 6pt; font-size: 12pt; font-family: Aptos, sans-serif;"><b><span style="font-size: 10.5pt; font-family: Arial, sans-serif; color: rgb(30, 55, 101);">Juncheng Zhang</span></b><span style="font-size: 10pt; font-family: Arial, sans-serif;"><br><span style="color: rgb(0, 127, 163);">PhD Student,<span class="Apple-converted-space"> </span><o:p></o:p></span></span></p><p class="MsoNormal" style="margin: 0cm 0cm 6pt; font-size: 12pt; font-family: Aptos, sans-serif;"><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(0, 127, 163);">Earth, Atmospheric, and Planetary Physics</span><span style="font-size: 10pt; font-family: Arial, sans-serif;"><br><br><span style="color: rgb(30, 55, 101);">Department of Physics<br>University of Toronto<br>McLennan Physical Laboratories<br>60 St Gorge St<br>Toronto, Ontario, M5S 1A7<br><br></span><a href="mailto:juncheng.zhang@mail.utoronto.ca"><span style="color: rgb(5, 99, 193);">juncheng.zhang@mail.utoronto.ca</span></a><br><br></span><a href="https://urldefense.com/v3/__https://www.physics.utoronto.ca/__;!!Mih3wA!HNDUCNXhxG6MrF8lwCidyXH6k9D5I1559lhoKL_x2Ny6m-3mu3lV5LVhng9IgTLUp1kzdf1ZaHGJ0Gy3Xs9pze8eihBDFwmX_g$"><b><span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(0, 120, 148); text-decoration: none;"><span id="cid:image001.jpg@01DBD93B.AB0C00B0"><image001.jpg></span></span></b></a><span style="font-size: 10pt; font-family: Arial, sans-serif;"><o:p></o:p></span></p></div><div style="margin: 0cm; font-size: 12pt; font-family: Aptos, sans-serif;"><o:p> </o:p></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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; float: none; display: inline !important;">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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; float: none; display: inline !important;">MITgcm-support mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><a href="mailto:MITgcm-support@mitgcm.org" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">MITgcm-support@mitgcm.org</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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;"><a href="https://urldefense.com/v3/__http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support__;!!Mih3wA!HNDUCNXhxG6MrF8lwCidyXH6k9D5I1559lhoKL_x2Ny6m-3mu3lV5LVhng9IgTLUp1kzdf1ZaHGJ0Gy3Xs9pze8eihC6QF5Rzw$" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">https://urldefense.com/v3/__http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support__;!!Mih3wA!HNDUCNXhxG6MrF8lwCidyXH6k9D5I1559lhoKL_x2Ny6m-3mu3lV5LVhng9IgTLUp1kzdf1ZaHGJ0Gy3Xs9pze8eihC6QF5Rzw$</a><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: 400; 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; float: none; display: inline !important;"></span></div></blockquote></div><br></div></body></html>