<div dir="ltr"><div class="gmail_default" style="font-size:small">Dear Jiande,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">ncarg-talk is for people with NCAR Graphics questions.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">For NCL questions, please post to <a href="mailto:ncl-talk@ucar.edu">ncl-talk@ucar.edu</a>:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><a href="http://www.ncl.ucar.edu/Support/email_lists.shtml">http://www.ncl.ucar.edu/Support/email_lists.shtml</a><br></div><div class="gmail_default"><br></div><div class="gmail_default">I think you should be able to regrid the tripolar directly to a tripolar grid. Both tripolar grids are curvilinear, correct? That is, they are represented by 2D lat/lon grids?</div><div class="gmail_default"><br></div><div class="gmail_default">If so, see example #11 at:</div><div class="gmail_default"><br></div><div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/ESMF.shtml#ex11">http://www.ncl.ucar.edu/Applications/ESMF.shtml#ex11</a><br></div><div class="gmail_default"><br></div><div class="gmail_default">This example goes from a tripolar to MPAS grid, but I believe you could modify these lines:</div><div class="gmail_default"><br></div><div class="gmail_default"><div class="gmail_default"> Opt@DstGridLat = latCell ; Destination grid</div><div class="gmail_default"> Opt@DstGridLon = lonCell</div><div class="gmail_default"> Opt@DstGridType = "unstructured"</div><div class="gmail_default"><br></div><div class="gmail_default">to:</div><div class="gmail_default"><br></div><div class="gmail_default"><div class="gmail_default"> Opt@DstGridLat = dst_lat ; Destination grid</div><div class="gmail_default"> Opt@DstGridLon = dst_lon</div><div class="gmail_default"> Opt@DstGridType = "curvilinear" <br></div><div class="gmail_default"><br></div><div class="gmail_default">Where dst_lat and dst_lon are the 2D lat/lon grid for the destination tripolar grid.</div><div class="gmail_default"><br></div><div class="gmail_default">You may also want to change this to whatever interpolation method you want ("bilinear" is the default):</div><div class="gmail_default"><br></div><div class="gmail_default"> Opt@InterpMethod = "patch" ; bilinear, conserve, neareststod, nearestdtos</div><div class="gmail_default"><br></div><div class="gmail_default">If you use "conserve", then you should also provide the grid corners. The ESMF examples page explains some of this.</div><div class="gmail_default"><br></div><div class="gmail_default">Finally, if your source and/or destination grids are regional, you should also set:</div><div class="gmail_default"><br></div><div class="gmail_default">Opt@SrcRegional = True ; if source tripolar is regional</div><div class="gmail_default">Opt@DstRegional = True ; if destination tripolar is regional</div><div class="gmail_default"><br></div><div class="gmail_default">--Mary</div><div class="gmail_default"><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 6, 2017 at 2:57 PM, Jiande Wang - NOAA Affiliate <span dir="ltr"><<a href="mailto:jiande.wang@noaa.gov" target="_blank">jiande.wang@noaa.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi,</div><div> I am new to NCL.</div><div> I have a tripolar grid ocean data and want to regrid it to another tripolar grid.</div><div> What I plan to do is first regrid the original tripolar grid data to regular lat/lon data. Then I will regrid the regular data to new tripolar grid.</div><div> I know what to do in the first step, but not clear on how to do in the second step.</div><div> Has any one have experience or script on my task?</div><div><br></div><div> Your suggestion will be appreciated.</div><div><br></div><div>Thanks</div><span class="HOEnZb"><font color="#888888"><div>Jiande</div></font></span></div>
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