<div dir="ltr"><div>Based on the printVarSummary which shows the named dimensions as<br> <span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">[Time | 8760] x [south_north | 106] x [west_east | 123]<br></span></div><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">You hacv a WRF grid (curvilinear) grid.<br><br><br></span><div><br><a href="http://www.ncl.ucar.edu/Applications/ESMF.shtml">http://www.ncl.ucar.edu/Applications/ESMF.shtml</a><br><br></div><div>Example 20 (also, Example 16)<br><br></div><div>This is going from high resolution to low resolution but you could just use your 64km res file as input and<br></div><div>specify the 'destination' 32 km grid.<br><br></div><div>Note: you are interpolating precipitation. Since it is a test, bilinear would be fine. However, the conserve method may be better for some applications.<br><br></div><div>Good luck <br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Nov 21, 2014 at 9:44 AM, Marcella, Marc <span dir="ltr"><<a href="mailto:MMarcella@air-worldwide.com" target="_blank">MMarcella@air-worldwide.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Yes, I meant it would be a misrepresentation of resolution since it will be at 32km physically but in reality it is 64km information.<u></u><u></u></span></p>
<p><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><span>2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I have a 64km resolution dataset that I want to slice up into 32 km resolution for example going from say a 50x50 grid to 100x100 grid (4x total points)
I attached an illustration if this makes it clearer. <u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The original data is curvilinear (output from WRF data) but this data itself is plucked out of the wrfout files and placed onto a
grid that knows nothing about the lat/lon and I am fine keeping it in a rectilinear grid as seen here by the printVarSummary: <u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Variable: TOT_PRCP<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Type: float<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Total Size: 456851520 bytes<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">114212880 values<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Number of Dimensions: 3<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Dimensions and sizes: [Time | 8760] x [south_north | 106] x [west_east | 123]<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Coordinates:
<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Number Of Attributes: 3<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">_FillValue : 9.96921e+36<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">units : mm/hr<u></u><u></u></span></p>
<p class="MsoNormal" style="margin-left:.25in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">description : Total hourly precipitation accumulation
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thank you for your help with this!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Marc<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Dennis Shea [mailto:<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</a>]
<br>
<b>Sent:</b> Friday, November 21, 2014 11:27 AM<br>
<b>To:</b> Marcella, Marc; <a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
<b>Subject:</b> Re: [ncl-talk] regrid from 64km to 32km<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
<br>
<u></u><u></u></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">I think you have to provide more information.
<u></u><u></u></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">[1] Not sure what you mean by "this would be an incorrect regridding format/procedure". Do you mean going from low -resolution to high-resolution? There is nothing "incorrect" about that. The issue is that
the *effective resolution* would stll be 64km but the data are rendered on a 32km grid.<u></u><u></u></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">[2] The rest of the question is obscure.<u></u><u></u></p>
</div>
<p class="MsoNormal">[3] *ALWAYS* include a printVarsummary of the source variable.<u></u><u></u></p>
</div>
<p class="MsoNormal"> (a) Is the source grid rectilinear or curvilinear? If curvilinear, then linint2 is not the function to use.<u></u><u></u></p>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Fri, Nov 21, 2014 at 7:58 AM, Marcella, Marc <<a href="mailto:MMarcella@air-worldwide.com" target="_blank">MMarcella@air-worldwide.com</a>> wrote:<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal">Hi NCL’ers,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">I would like to take a current dataset that is 64 km, say at dimensions j=106 x i=123 and “regrid” it such that the gridcells are just sliced up into 32km resolution grid cells,
ie the final product would have dimensions of 212x246. I do recognize that this would be an incorrect regridding format/procedure but I just need the grid for a test input file. I tried the linint2 regridding but this kept the first (lower left) 106x123
gridcells the original values and all the additional/new gridcells outside this box were FillValues. Is there an easy way to do this with a regrid or NCL function?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Thanks for any help in advance!<u></u><u></u></p>
<p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#888888">Marc<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#888888"> <u></u><u></u></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
_______________________________________________<br>
ncl-talk mailing list<br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div></div></div>
</div>
</blockquote></div><br></div>