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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 class="">With prescribed boundary conditions, everything that does not match exactly the specified boundary conditions will be reflected.</div>
<div class="">You can sometimes get away with prescribed boundary conditions when you are downscaling from a simulation with the same forcing.</div>
<div class="">But this is not your case where the lateral boundary conditions and the atmospheric forcing are not directly related.</div>
<div class="">Some relaxation at the boundaries might be able to damp these reflections.<br class="">
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<div>Dimitris</div>
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<div class="">On Mar 17, 2022, at 8:07 AM, kunal madkaiker <<a href="mailto:kunal.madkaiker02@gmail.com" class="">kunal.madkaiker02@gmail.com</a>> wrote:</div>
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<div class="">Thank you Dimitris for your reply.</div>
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<div class="">Yes, I am prescribing the BCs on 3 sides, and not using a sponge yet.</div>
<div class="">I'll take a look at your suggestion.</div>
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<div class="">Thanks,</div>
<div class="">Kunal<br class="">
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On Wed, Mar 16, 2022 at 6:27 AM Menemenlis, Dimitris (US 329B) <<a href="mailto:dimitris.menemenlis@jpl.nasa.gov" class="">dimitris.menemenlis@jpl.nasa.gov</a>> wrote:<br class="">
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<div style="overflow-wrap: break-word;" class="">Hi Kunal, are you “prescribing” the boundary conditions or do you use a sponge?
<div class="">If the former, I wonder whether the accumulation of turbulence inside the domain could be caused</div>
<div class="">the reflection of circulation features generated or evolved inside the domain that then</div>
<div class="">reach the lateral boundaries and are inconsistent with the prescribed obcs?</div>
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<div class="">Dimitris<br class="">
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