<div dir="ltr"><div>Thank you Dimitris,</div><div><br></div><div>I would be adding relaxation for U,V at the lateral boundary.</div><div>I'll certainly update once I get the results.</div><div><br></div><div>Thanks</div><div>Kunal<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 17, 2022 at 11:17 PM Menemenlis, Dimitris (US 329B) <<a href="mailto:dimitris.menemenlis@jpl.nasa.gov">dimitris.menemenlis@jpl.nasa.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="overflow-wrap: break-word;">
Hi Kunal, I will be interested to know what you find, that is, whether it is indeed reflections at the lateral boundaries that cause trouble.
<div>With prescribed boundary conditions, everything that does not match exactly the specified boundary conditions will be reflected.</div>
<div>You can sometimes get away with prescribed boundary conditions when you are downscaling from a simulation with the same forcing.</div>
<div>But this is not your case where the lateral boundary conditions and the atmospheric forcing are not directly related.</div>
<div>Some relaxation at the boundaries might be able to damp these reflections.<br>
<div><br>
</div>
<div>Dimitris</div>
<div><br>
</div>
<div><br>
<blockquote type="cite">
<div>On Mar 17, 2022, at 8:07 AM, kunal madkaiker <<a href="mailto:kunal.madkaiker02@gmail.com" target="_blank">kunal.madkaiker02@gmail.com</a>> wrote:</div>
<br>
<div>
<div dir="ltr">
<div>Thank you Dimitris for your reply.</div>
<div><br>
</div>
<div>Yes, I am prescribing the BCs on 3 sides, and not using a sponge yet.</div>
<div>I'll take a look at your suggestion.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Kunal<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr" style="font-family:Helvetica;font-size:12px;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;text-decoration:none">
On Wed, Mar 16, 2022 at 6:27 AM Menemenlis, Dimitris (US 329B) <<a href="mailto:dimitris.menemenlis@jpl.nasa.gov" target="_blank">dimitris.menemenlis@jpl.nasa.gov</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="font-family:Helvetica;font-size:12px;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;text-decoration:none;margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>Hi Kunal, are you “prescribing” the boundary conditions or do you use a sponge?
<div>If the former, I wonder whether the accumulation of turbulence inside the domain could be caused</div>
<div>the reflection of circulation features generated or evolved inside the domain that then</div>
<div>reach the lateral boundaries and are inconsistent with the prescribed obcs?</div>
<div><br>
</div>
<div>Dimitris<br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
</div>
<br>
</div>
</div>
_______________________________________________<br>
MITgcm-support mailing list<br>
<a href="mailto:MITgcm-support@mitgcm.org" target="_blank">MITgcm-support@mitgcm.org</a><br>
<a href="http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support" rel="noreferrer" target="_blank">http://mailman.mitgcm.org/mailman/listinfo/mitgcm-support</a><br>
</blockquote></div>