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<p>Dennis</p>
<p><br>
</p>
<p>Thanks a lot! Yes, <span style="font-size: 12pt;">ESMF_regrid is much quicker. </span></p>
<p><span style="font-size: 12pt;">It mostly worked for me except negative values generated, </span></p>
<p><span style="font-size: 12pt;">see my original data shown at <a href="http://www.caps.ou.edu/micronet/CO2_and_otherGHG/WRFV3.8.1/YSU/wrfchem3.8.1_NARR_CONUS_nudge2_tracer16_Comet.2011080600/wrfout_d01_E_CO2_EDGAR_2.png" class="OWAAutoLink" id="LPlnk665667" previewremoved="true">http://www.caps.ou.edu/micronet/CO2_and_otherGHG/WRFV3.8.1/YSU/wrfchem3.8.1_NARR_CONUS_nudge2_tracer16_Comet.2011080600/wrfout_d01_E_CO2_EDGAR_2.png</a></p>
<p></p>
</span>
<p></p>
<p>and the interpolated data shown </p>
<p>at <a href="http://www.caps.ou.edu/micronet/CO2_and_otherGHG/WRFV3.8.1/YSU/wrfchem3.8.1_NARR_CONUS_nudge2_tracer16_Comet.2011080600/wrfout_d01_E_CO2_0.png" class="OWAAutoLink" id="LPlnk631021" previewremoved="true">http://www.caps.ou.edu/micronet/CO2_and_otherGHG/WRFV3.8.1/YSU/wrfchem3.8.1_NARR_CONUS_nudge2_tracer16_Comet.2011080600/wrfout_d01_E_CO2_0.png</a></p>
<p></p>
<p></p>
<p>You may notice in the right-lower corner the contour information shows Min=-20.745</p>
<p><br>
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<p>Any suggestion to improve this? </p>
<p>My interpolation script at <a href="http://www.caps.ou.edu/micronet/CO2_and_otherGHG/WRFV3.8.1/YSU/wrfchem3.8.1_NARR_CONUS_nudge2_tracer16_Comet.2011080600/Interp_edgar42_to_wrfchemi_NEI.ncl" class="OWAAutoLink" id="LPlnk775268" previewremoved="true">http://www.caps.ou.edu/micronet/CO2_and_otherGHG/WRFV3.8.1/YSU/wrfchem3.8.1_NARR_CONUS_nudge2_tracer16_Comet.2011080600/Interp_edgar42_to_wrfchemi_NEI.ncl</a></p>
<p><br>
</p>
<p>Thanks a lot!</p>
<p>Xiaoming </p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Dennis Shea <shea@ucar.edu><br>
<b>Sent:</b> Tuesday, March 28, 2017 11:39:23 AM<br>
<b>To:</b> xiaoming Hu<br>
<b>Cc:</b> ncl-talk@ucar.edu<br>
<b>Subject:</b> Re: [ncl-talk] rgrid2rcm too slow?</font>
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<div>rgrid2rcm can be slow.<br>
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Use ESMF: there are exam<br>
<a href="http://www.ncl.ucar.edu/Applications/ESMF.shtml">http://www.ncl.ucar.edu/Applications/ESMF.shtml</a><br>
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There are numerous examples of going from rectilinear ('rgrid') to curvilinear ('rcm')<br>
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Examples 9, 15, 28-30, 32, 33,<br>
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HTH<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Mar 28, 2017 at 9:30 AM, xiaoming Hu <span dir="ltr">
<<a href="mailto:yuanfangcan@hotmail.com" target="_blank">yuanfangcan@hotmail.com</a>></span> wrote:<br>
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<p>I am doing <br>
</p>
<p>"</p>
<div>dummy1 = rgrid2rcm (elat, elon, emi_co2, lat2d, lon2d, 0)<br>
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"
<p></p>
<p>where lat2d and lon2d have a dimension of 442x265</p>
<p><br>
</p>
<p>The script appears to take forever. <br>
</p>
<p><br>
</p>
<p>Any other ways to do a faster interpolation? <br>
</p>
<p><br>
</p>
<p>Thanks a lot!</p>
<span class="HOEnZb"><font color="#888888">
<p>Xiaoming <br>
</p>
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