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Hi,</div>
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I was hoping that someone could give me some advice about the best way to define the vertical viscosity (and diffusivity) in MITgcm for a non-hydrostatic model using a stretched vertical grid. I've used a stretched vertical grid to resolve very small features
of interest (~0.2 m) in the upper ocean and to keep the simulation practical.</div>
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The viscosity should vary with the grid resolution (e.g., <span class="ContentPasted0" style="font-size:12pt;margin:0px;background-color:rgb(255, 255, 255);display:inline !important">Smagorinsky, 1993)</span>, however, the MITgcm documentation says that the
Smagorinsky scheme isn't implemented in the vertical.<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;"> So would a reasonable approach be to compute a vertical profile of viscosities using a vertical Reynolds
number and use that to set viscArNr?</span></div>
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<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">Many thanks,</span></div>
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<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">Paul</span></div>
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<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="color: rgb(12, 100, 192);"><u> </u></span></p>
<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="margin:0px;color:rgb(31, 78, 121)">Dr Paul Burns MInstP FRMetS</span></p>
<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="margin:0px;color:rgb(31, 78, 121)">Research Fellow</span></p>
<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="margin:0px;color:rgb(31, 78, 121)">Geophysical and Astrophysical Fluid Dynamics Group</span></p>
<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="margin:0px;color:rgb(31, 78, 121)">Department of Mathematics</span></p>
<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="margin:0px;color:rgb(31, 78, 121)">Harrison Building</span></p>
<p style="font-size:11pt;font-family:Calibri, sans-serif;margin:0px"><span style="margin:0px;color:rgb(31, 78, 121)">University of Exeter</span></p>
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