<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I think you could do either, though I think rbcs might be the most straight forward. But if you want to use obcs, I think you can just set V=0 at your northern boundary and that will be close to the same thing as a wall. Note however, that if you have a sponge for temperature I *think* you will get the same one for V. <div class=""><br class=""></div><div class="">Cheers, Jody</div><div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jul 6, 2019, at 6:46 AM, 钱钰坤 <<a href="mailto:qianyk@mail3.sysu.edu.cn" class="">qianyk@mail3.sysu.edu.cn</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi all,</div><div class=""><br class=""></div><div class="">I am using a model setup with a solid north boundary so that no mass exchange</div><div class="">occurs at the north. This is done using a bathymetry file whose northernmost</div><div class="">grid points are set to zero (e.g., land points).</div><div class=""><br class=""></div><div class="">However, I also need a sponge layer so that the temperature could be restored to</div><div class="">some given profile. According to the manual, my sponge layer will restore temperature</div><div class="">to the north boundary condition.</div><div class=""><br class=""></div><div class="">Now I'm a little confused. Since my north boundary is masked by the bathy file, does a</div><div class="">temperature boundary file take some restoring effects in this case? Or maybe I should</div><div class="">use the rbcs package?</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><sign signid="0" class=""><div style="color:#909090;font-family:Arial Narrow;font-size:12px" class="">------------------</div><div style="font-size: 14px; font-family: Verdana;" class=""><div class=""> <font size="2" class="">Best regards <br class=""> <br class="">Yu-Kun Qian (钱钰坤) <br class="">Center for Monsoon and Environment Research</font> </div> <font size="2" class="">Department of Atmospheric Sciences<br class="">School of Environmental Science and Engineering<font size="2" class=""> <br class=""> </font>Sun Yat-sen University <br class="">No. 135 Xingang West Road, Haizhu District <br class="">Guangzhou, 510275, P.R. China <br class="">Tel; 020-84115227 <br class="">Email: <a href="mailto:qianyk@mail2.sysu.edu.cn" class="">qianyk@mail3.sysu.edu.cn</a> </font>
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