<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear MITgcm support.<div class=""><br class=""></div><div class="">I currently have the outputs for a flat-bottom zonally re-entrant channel model. Since it's a flat bottom, the vertical velocity at the bottom should be zero. </div><div class="">The issue I’m facing is that MITgcm only outputs the vertical velocity down until to the grid point right above the very bottom, which has relatively large root-mean square values (figure attached below for a snapshot of the vertical velocity).</div><div class="">My current guess is that the vertical velocity goes to zero at the bottom in the calculation from Ekman contributions. Is there a simple and numerically consistent way to parse out the non-Ekman component of vertical velocity?</div><div class=""><br class=""></div><div class="">Thank you very much for your support in advance.</div><div class=""><br class=""></div><div class="">Best,</div><div class="">Takaya<br class=""><div class="">
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