<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Hello<div><br></div><div>One has to first close the momentum budget. Are you able to do that?</div><div><br></div><div>Once the momentum budget is closed one takes the curl using this formula:</div><div><div> vort3(I,J)=</div><div> & recip_rAz(I,J,bi,bj)*(</div><div> & ( vFld(I,J)*dyC(I,J,bi,bj)</div><div> & -vFld(I-1,J)*dyC(I-1,J,bi,bj) )</div><div> & -( uFld(I,J)*dxC(I,J,bi,bj)</div><div> & -uFld(I,J-1)*dxC(I,J-1,bi,bj) )</div><div> & )</div><div> </div><div>As this makes pxy - pyx = 0 </div><div><br></div></div><div>Here vFld would be all the terms in the y momentum budget and uFld all the terms in the x momentum budget. </div><div><br></div><div>Hope this helps!</div><div><br></div><div>Matt</div><div><div><br><blockquote type="cite"><div>On Jan 14, 2024, at 1:12 AM, chenguang <22320182201293@stu.xmu.edu.cn> wrote:</div><br class="Apple-interchange-newline"><div>
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<span style="font-family: 微软雅黑;">Hi dear ECCO group，</span><br>
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</div><div><span><span style="font-family: 微软雅黑;"><br></span></span></div><div><span><span style="font-family: 微软雅黑;">I'm a graduate student from Xiamen University. I have acquired knowledge on calculating the volume budget and geostrophic balance through the tutorials, which has been immensely beneficial to me. However, I have encountered difficulties in closing the vorticity budget. I would appreciate it if you can give me some suggestions on achieving vorticity budget closure with ECCOv4r4.</span></span></div><div><span><span style="font-family: 微软雅黑;"><br></span></span></div><div><span><span style="font-family: 微软雅黑;">Thank you,</span></span></div><div><span><span style="font-family: 微软雅黑;">GuangChen</span></span></div><div>
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