<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;">Hello<div><br></div><div>You can see which are wet points as they will have </div><div>hFacC>0 </div><div>in the high-res.</div><div><br></div><div>Matt</div><div><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Jun 9, 2025, at 10:04 AM, Archie Zhang <zjcxiaobai@gmail.com> wrote:</div><br class="Apple-interchange-newline"><div><div dir="ltr">Hi matt, <div><br></div><div>Thank you for your response, </div><div>I am new to MITgcm, could you explain more about how to extrapolate to the wet grid-pts? how can I get the position of the wet grid-pts?</div><div><br></div><div>In my simulation, I only did the extrapolation in horizontal, since I only want to increase the horizontal resolution.</div><div><br></div><div>Thank you !</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Jun 9, 2025 at 12:59 PM Matthew Mazloff <<a href="mailto:mmazloff@ucsd.edu">mmazloff@ucsd.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div style="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="m_-4818487859732186804lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Jun 9, 2025, at 9:49 AM, Juncheng Zhang <<a href="mailto:juncheng.zhang@mail.utoronto.ca" target="_blank">juncheng.zhang@mail.utoronto.ca</a>> wrote:</div><br><div><div style="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;text-decoration:none"><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt">Dear all,<span> </span><u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt"><u></u> <u></u></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,<u></u><u></u></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,<u></u><u></u></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:<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt"><u></u> <u></u></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.<u></u><u></u></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<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt"><u></u> <u></u></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,<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt"><u></u> <u></u></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.<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt"><u></u> <u></u></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.<u></u><u></u></span></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><span style="font-size:11pt"><u></u> <u></u></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)"><u></u> <u></u></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<u></u><u></u></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> </span><u></u><u></u></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" target="_blank"><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$" target="_blank"><b><span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(0,120,148);text-decoration:none"><span id="m_-4818487859732186804cid:image001.jpg@01DBD93B.AB0C00B0"><image001.jpg></span></span></b></a><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u><u></u></span></p></div><div style="margin:0cm;font-size:12pt;font-family:Aptos,sans-serif"><u></u> <u></u></div></div><span 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