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--></style></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi, <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am checking the behavior of the bottom drag, following the old post <a href="http://mailman.mitgcm.org/pipermail/mitgcm-support/2011-June/007258.html">http://mailman.mitgcm.org/pipermail/mitgcm-support/2011-June/007258.html</a> . <o:p></o:p></p><p class=MsoNormal>My question involves 2 scenarios, and I am wondering if my interpretation is right. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1. Scenario 1 setup: <o:p></o:p></p><p class=MsoNormal>no_slip_sides=.FALSE.,<o:p></o:p></p><p class=MsoNormal>no_slip_bottom=.FALSE.,<o:p></o:p></p><p class=MsoNormal>bottomDragQuadratic=2.5E-3,<o:p></o:p></p><p class=MsoNormal>Although both the bottom and the side are free slip, there are still bottom friction and energy dissipation at the bottom. I saw some papers do this using MITgcm, but it is not very intuitive to me. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2. Scenarios 2 setup: <o:p></o:p></p><p class=MsoNormal>no_slip_sides=.TRUE.,<o:p></o:p></p><p class=MsoNormal>no_slip_bottom=.TRUE.,<o:p></o:p></p><p class=MsoNormal>bottomDragQuadratic=2.5E-3,<o:p></o:p></p><p class=MsoNormal>Now the bottom is no slip with a bottom drag coefficient specified. However, since the side is no slip as well, is there also a drag coefficient that can be specified for the sides? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>There are some explanations in the documentation <a href="http://mitgcm.org/public/r2_manual/latest/online_documents/node58.html"><span style='color:blue'>http://mitgcm.org/public/r2_manual/latest/online_documents/node58.html</span></a> , but I am hoping further clarifications about this. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Yilang<span style='font-size:10.0pt;font-family:"Times New Roman",serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman",serif;color:black'><o:p> </o:p></span></p></div></body></html>