<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="">
Hello Yangxin,
<div class=""><br class="">
</div>
<div class="">Regarding your first point, there is a section in the manual devoted to advection schemes: <a href="https://mitgcm.readthedocs.io/en/latest/algorithm/adv-schemes.html" class="">https://mitgcm.readthedocs.io/en/latest/algorithm/adv-schemes.html</a></div>
<div class=""><br class="">
</div>
<div class="">If you found that section insufficient, it would be good to know why. That way we can work towards improving it.</div>
<div class=""><br class="">
</div>
<div class="">Cheers,</div>
<div class="">Ed</div>
<div class=""><br class="">
</div>
<div class="">
<div class="">
<div style="color: rgb(0, 0, 0); font-family: Palatino; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; 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;" class="">
<span class="Apple-style-span" style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-collapse: separate; border-spacing: 0px;"><br class="Apple-interchange-newline">
<hr style="font-family: Tahoma; font-size: 13px;" class="">
<span class="Apple-style-span" style="font-family: Tahoma; font-size: 13px;"><font face="Tahoma" size="2" class=""><span dir="ltr" style="font-size: 10pt;" class=""><font size="1" class=""><span style="font-size: 13px;" class=""><font size="2" class=""><b class="">Edward
Doddridge</b><br class="">
<i class="">Postdoctoral researcher</i></font></span></font></span></font></span></span></div>
<div style="color: rgb(0, 0, 0); font-family: Palatino; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; 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;" class="">
<span class="Apple-style-span" style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-collapse: separate; border-spacing: 0px;"><span class="Apple-style-span" style="font-family: Tahoma; font-size: 13px;"><font face="Tahoma" size="2" class=""><span dir="ltr" style="font-size: 10pt;" class=""><font size="1" class=""><span style="font-size: 13px;" class=""><font size="2" class=""><i class="">Earth,
Atmospheric and Planetary Sciences</i></font></span></font></span></font></span></span></div>
<div style="color: rgb(0, 0, 0); font-family: Palatino; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; 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;" class="">
<span class="Apple-style-span" style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-collapse: separate; border-spacing: 0px;"><span class="Apple-style-span" style="font-family: Tahoma; font-size: 13px;"><font face="Tahoma" size="2" class=""><span dir="ltr" style="font-size: 10pt;" class=""><font size="1" class=""><span style="font-size: 13px;" class=""><font size="2" class=""><i class="">Massachusetts
Institute of Technology</i></font></span></font></span></font></span></span></div>
<div style="color: rgb(0, 0, 0); font-family: Palatino; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; 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;" class="">
<div style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal;" class="">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; widows: 2; border-spacing: 0px;"><span class="Apple-style-span" style="font-family: Tahoma; font-size: 13px;"><font face="Tahoma" size="2" class=""><span dir="ltr" style="font-size: 10pt;" class=""><font size="1" class=""><span style="font-size: 13px;" class=""><font size="2" class=""><i class=""><br class="">
</i></font></span></font></span></font></span></span></div>
<div style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal;" class="">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; widows: 2; border-spacing: 0px;"><span class="Apple-style-span" style="font-family: Tahoma; font-size: 13px;"><font face="Tahoma" size="2" class=""><a href="http://www.doddridge.me" class="">www.doddridge.me</a></font></span></span></div>
</div>
</div>
<div><br class="">
<blockquote type="cite" class="">
<div class="">On 3 Sep 2019, at 14:22, Yangxin He <<a href="mailto:y67he@uwaterloo.ca" class="">y67he@uwaterloo.ca</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div id="divtagdefaultwrapper" dir="ltr" style="font-size: 12pt; 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, Helvetica, sans-serif;" class="">
<div style="margin-top: 0px; margin-bottom: 0px;" class="">Hi there,</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class="">
</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">I am running a simple 2d oceanic model with tides sloshing up and down a slope, so internal tides are generated. Part of my data file looks like</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class="">
</div>
<div style="margin: 0px; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Courier; color: rgb(255, 238, 149); background-color: rgb(21, 102, 47);" class="">
<span style="font-variant-ligatures: no-common-ligatures;" class=""> implicitDiffusion=.TRUE.,</span></div>
<div style="margin: 0px; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Courier; color: rgb(255, 238, 149); background-color: rgb(21, 102, 47);" class="">
<span style="font-variant-ligatures: no-common-ligatures;" class=""> implicitViscosity=.TRUE.,</span></div>
<div style="margin: 0px; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Courier; color: rgb(255, 238, 149); background-color: rgb(21, 102, 47);" class="">
<span style="font-variant-ligatures: no-common-ligatures;" class="">#change advection shceme</span></div>
<div style="margin: 0px; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Courier; color: rgb(255, 238, 149); background-color: rgb(21, 102, 47);" class="">
<span style="font-variant-ligatures: no-common-ligatures;" class=""> tempAdvScheme=33,</span></div>
<p style="margin-top: 0px; margin-bottom: 0px;" class=""></p>
<div style="margin: 0px; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Courier; color: rgb(255, 238, 149); background-color: rgb(21, 102, 47);" class="">
<span style="font-variant-ligatures: no-common-ligatures;" class=""> staggerTimeStep=.TRUE.,</span></div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class="">
</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">The simulation is fine. Two quick questions, </div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">1) I am certainly not an expert in coding, but I think it will be a good idea that I can at least have some idea of what I am using. Where can I find out more information about this advection scheme
33? There does not seem much in the manual. </div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">2) In one of my previous threads here</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><a href="http://mailman.mitgcm.org/pipermail/mitgcm-support/2019-July/012095.html" class="OWAAutoLink" id="LPlnk844452" previewremoved="true">http://mailman.mitgcm.org/pipermail/mitgcm-support/2019-July/012095.html</a><br class="">
</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">Jody mentioned adv33 will allow the lateral diffusion set to 0, i.e. diffKhT=0. I tried it, it did work. But why?</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class="">
</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">Thanks</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class="">
</div>
<div style="margin-top: 0px; margin-bottom: 0px;" class="">Yangxin</div>
</div>
<span style="caret-color: rgb(0, 0, 0); font-family: Palatino-Roman; font-size: 16px; 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; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Palatino-Roman; font-size: 16px; 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;" class="">
<span style="caret-color: rgb(0, 0, 0); font-family: Palatino-Roman; font-size: 16px; 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; float: none; display: inline !important;" class="">MITgcm-support
mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Palatino-Roman; font-size: 16px; 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;" class="">
<a href="mailto:MITgcm-support@mitgcm.org" style="font-family: Palatino-Roman; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">MITgcm-support@mitgcm.org</a><br style="caret-color: rgb(0, 0, 0); font-family: Palatino-Roman; font-size: 16px; 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;" class="">
<a href="http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support" style="font-family: Palatino-Roman; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support</a></div>
</blockquote>
</div>
<br class="">
</div>
</body>
</html>