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If you are using a rectangular latitude/longitude grid, the easiest way to specify the grid is via a few parameters in the data files, e.g., as is done here:
<div class=""><a href="https://github.com/MITgcm/MITgcm/blob/master/verification/lab_sea/input/data" class="">https://github.com/MITgcm/MITgcm/blob/master/verification/lab_sea/input/data</a></div>
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<div class=""># Gridding parameters</div>
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<div class=""># usingSphericalPolarGrid - On/Off flag for spherical polar coordinates</div>
<div class=""># delX - Zonal grid spacing (degrees)</div>
<div class=""># delY - Meridional grid spacing (degrees)</div>
<div class=""># delZ - Vertical grid spacing (m)</div>
<div class=""># ygOrigin - Southern boundary latitude (degrees)</div>
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<div class=""> &PARM04</div>
<div class=""> usingSphericalPolarGrid=.TRUE.,</div>
<div class=""> delX=20*2.E0,</div>
<div class=""> delY=16*2.E0,</div>
<div class=""> delZ= 10., 10., 15., 20., 20., 25., 35., 50., 75.,</div>
<div class=""> 100., 150., 200., 275., 350., 415., 450.,</div>
<div class=""> 500., 500., 500., 500., 500., 500., 500.,</div>
<div class=""> ygOrigin=46.,</div>
<div class=""> xgOrigin=280.,</div>
<div class=""> rSphere = 6371.D3,</div>
<div class=""> &</div>
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<div class="">On Apr 16, 2024, at 1:50 AM, Yilang Xu <<a href="mailto:yxu@whoi.edu" class="">yxu@whoi.edu</a>> wrote:</div>
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<span style="font-size: 11pt;" class="">Hi Dimitris,<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<span style="font-size: 11pt;" class="">Thank you for the reply. I am using a rectangular grid, which is for a regional modeling near Antarctica.<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<span style="font-size: 11pt;" class="">Cheers,<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class="">Yilang<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<b class=""><span style="" class="">From:<span class="Apple-converted-space"> </span></span></b><span style="" class="">MITgcm-support <<a href="mailto:mitgcm-support-bounces@mitgcm.org" class="">mitgcm-support-bounces@mitgcm.org</a>> on behalf of Menemenlis,
Dimitris (US 329B) <<a href="mailto:dimitris.menemenlis@jpl.nasa.gov" class="">dimitris.menemenlis@jpl.nasa.gov</a>><br class="">
<b class="">Date:<span class="Apple-converted-space"> </span></b>Tuesday, April 16, 2024 at 00:52<br class="">
<b class="">To:<span class="Apple-converted-space"> </span></b><a href="mailto:mitgcm-support@mitgcm.org" class="">mitgcm-support@mitgcm.org</a><span class="Apple-converted-space"> </span><<a href="mailto:mitgcm-support@mitgcm.org" class="">mitgcm-support@mitgcm.org</a>><br class="">
<b class="">Subject:<span class="Apple-converted-space"> </span></b>Re: [MITgcm-support] Curvilinear grid generation<o:p class=""></o:p></span></p>
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What is the desired characteristics of your grid? Would a latitude/longitude or a rectangular grid suffice for your application?</div>
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