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<body class='hmmessage'><div dir='ltr'><br><div>Jennifer</div><div> Thanks, I'll get out there</div><div><br></div><div>Regards</div><div><br></div><font face="Verdana">Fernanda </font><br><br><div><hr id="stopSpelling">From: jma@cola.iges.org<br>Date: Tue, 21 May 2013 12:38:18 -0400<br>To: gradsusr@gradsusr.org<br>Subject: Re: [gradsusr] Tripolar Grid GFDL MOM<br><br>There is a way to do this using a PDEF file, but it requires some external software tools to generate the interpolation weights and then to create the PDEF file itself. I set up a workflow to do this for CMIP5 ocean and sea ice variables, which are almost all on non-rectilinear grids. I use the ESMF tool called ESMF_RegridWeightGen to do the interpolation and get the weights, then I wrote a short C program called weights2pdef.c to transform the output from RegridWeightGen into a PDEF file for GrADS. Both tools require the netcdf library. The ESMF software is straightforward to build, and their help desk is excellent if you run into problems. Everything I have used for the CMIP5 data is here:<div><br></div><div><a href="ftp://cola.gmu.edu/pub/jma/cmip5/" target="_blank">ftp://cola.gmu.edu/pub/jma/cmip5/</a> </div><div><br></div><div>Start by reading the README file. There may be much more there than you need, but you can see how I generate the PDEF file and the GrADS descriptor files automatically with the grads script write_ctl.gs. Also, I interpolate to a linear 0.5-degree grid, which may not meet your needs.</div><div>--Jennifer</div><div><br></div><div><br></div><div><div><div><div><div><div>On May 16, 2013, at 4:13 PM, Fernanda Casagrande wrote:</div><br class="ecxApple-interchange-newline"><blockquote><span class="ecxApple-style-span" style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;orphans:2;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;font-size:medium;"><div class="ecxhmmessage" style="font-size:12pt;font-family:Calibri;"><div dir="ltr"><br>Hello,<span class="ecxApple-converted-space"> </span><br><br><br><span id="ecxresult_box" class="ecxshort_text"><span title="Como eu posso usar uma grade tripolar no grads ?" style="background-color:rgb(255, 255, 255);">How can I use a tripolar grid in grads?<span class="ecxApple-converted-space"> </span><br><br>or<span class="ecxApple-converted-space"> </span><br><br></span></span>Can we regrid tripolar grid data from GFDL MOM model outputs (NetCDF format) to regular grid using grads?<br><br><br>Best Regards.<span class="ecxApple-converted-space"> </span><br><br>Fernanda<span class="ecxApple-converted-space"> </span><br><br></div>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br><a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br></div></span></blockquote></div><br><div>
<span class="ecxApple-style-span" style="border-collapse:separate;border-spacing:0px 0px;color:rgb(0, 0, 0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;orphans:2;white-space:normal;widows:2;word-spacing:0px;"><span class="ecxApple-style-span" style="border-collapse:separate;border-spacing:0px 0px;color:rgb(0, 0, 0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;orphans:2;white-space:normal;widows:2;word-spacing:0px;"><span class="ecxApple-style-span" style="border-collapse:separate;border-spacing:0px 0px;color:rgb(0, 0, 0);font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:auto;text-indent:0px;text-transform:none;orphans:2;white-space:normal;widows:2;word-spacing:0px;"><div>--</div><div>Jennifer M. Adams</div><div>IGES/COLA</div><div>4041 Powder Mill Road, Suite 302</div><div>Calverton, MD 20705</div><div><a href="mailto:jma@cola.iges.org">jma@cola.iges.org</a></div><div><br class="ecxkhtml-block-placeholder"></div><br class="ecxApple-interchange-newline"></span></span></span>
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