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Dear Kevin,
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<div class="">Is there as reason that you can’t use the RBCS package? <a href="https://mitgcm.readthedocs.io/en/latest/phys_pkgs/rbcs.html" class="">https://mitgcm.readthedocs.io/en/latest/phys_pkgs/rbcs.html</a></div>
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<div class="">Cheers,</div>
<div class="">Ed</div>
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<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>
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<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>
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<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>
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</i></font></span></font></span></font></span></span></div>
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<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>
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<blockquote type="cite" class="">
<div class="">On 16 Sep 2019, at 04:48, Kevin Ha <<a href="mailto:kevin.ha.pro@gmail.com" class="">kevin.ha.pro@gmail.com</a>> wrote:</div>
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<div class="">Dear community,</div>
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<div class="">I am trying to implement a sponge layer denoted a(x) varying between 0 and 1 in the x-direction so that my velocity forcing relaxes at the targeted value (Uf,Vf)=(0.025,0) m/s at the two edges of my domain after a certain time (defined as some
multiples of 3600 s) and (Uf,Vf)=(0,0) i.e. no forcing in the area of interest. My domain has an horizontal extent of Lx = sNx*NPx*dx = 50*40*30 m = 60 km long and I have added the mask function by modifying the right hand side of the Navier Stokes equation
gU, gV and gT as followed (see lines implemented in external_forcing.F) to get an exponential decay after a certain time. It seems however that the code is not taking into account the sponge layer at all and keeps resolving Navier Stokes without any mask restrictions
(which results in oscillations of U,V and theta in the longer times instead of the expected relaxation). Any idea about this issue ?</div>
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<div class="">Thank you in advance</div>
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<div class="">Kind regards</div>
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<div class="">Kevin.</div>
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