<div>Dear Dave,</div><div> </div><div>Thanks a lot for your detail and professinal reply. Setting the resources of mpProjection, mpLambertParallel1F, mpLambertParallel2F, mpLambertMeridianF mpLimitMode and other related resources perfectly resolved my problem. Now I can plot the TRMM data on a map which having the same projection of WRF output data, and don't need to regrid them. Deeply appreciations for your reply!</div><div> </div><div>Best regards!</div><div> </div><div>Yi Lu</div><div> </div><div> </div><div> </div><div><sign signid="98"><div style="color: rgb(144, 144, 144); font-family: Arial Narrow; font-size: 12px;"><br><br><br><br></div><div style="color: rgb(0, 0, 0); font-family: Verdana; font-size: 14px;"><div style="overflow: hidden;"><table class="preview_table"><tbody><tr><td valign="middle"><img id="preview_qrcode" src="https://exmail.qq.com/cgi-bin/setting_qrcode_card?action=qrcode_card&alias=dg1225033@smail.nju.edu.cn&key=33b1e5708e6a55b5"></td><td valign="middle" style="color: rgb(160, 160, 160); font-size: 12px;"><h4 class="name" style="margin: 0px; color: rgb(0, 0, 0); line-height: 28px; font-size: 14px; font-weight: bold; -ms-zoom: 1;">易路</h4><p class="department" style="margin: 0px;">南大邮件系统/学生/博士生/12级博士生</p><p class="addr" style="margin: 0px; color: rgb(160, 160, 160); line-height: 22px;">南京市汉口路22号 </p></td></tr></tbody></table></div></div></sign></div><div> </div><div><includetail><div> </div><div> </div><div style="color: rgb(0, 0, 0);"><div style="padding: 2px 0px; font-family: Arial Narrow; font-size: 12px;">------------------ Original ------------------</div><div style="background: rgb(239, 239, 239); padding: 8px; font-size: 12px;"><div id="menu_sender"><b>From: </b> "Dave Allured - NOAA Affiliate"<dave.allured@noaa.gov>;</div><div><b>Date: </b> Fri, Aug 19, 2016 04:13 AM</div><div><b>To: </b> "易路"<dg1225033@smail.nju.edu.cn>; <wbr></div><div><b>Cc: </b> "ncl-talk"<ncl-talk@ucar.edu>; <wbr></div><div><b>Subject: </b> Re: [ncl-talk] How to change the data on a rectilinear lat/lon gridto a curvilinear grid whithout changing its original resolution</div></div><div> </div><div dir="ltr">If you only want to make a map, then do not regrid the data. That is what reduces the resolution.<br><br>Instead, plot the ORIGINAL data on a map, but use the WRF projection parameters. Start with example 1 "dataonmap_1.ncl" on this page:<div><br></div><div> <a href="http://www.ncl.ucar.edu/Applications/plot_data_on_map.shtml" target="_blank">http://www.ncl.ucar.edu/<wbr>Applications/plot_data_on_map.<wbr>shtml</a></div><div><br><div>Change to Lambert Conformal with this resource. You will get a true Lambert Conformal global map with only this single change:<br></div><div><div><br></div><div> res@mpProjection = "LambertConformal"</div><div><br></div><div>You will probably want to change to WRF projection parameters using the following resources and other related ones. These control the view location over the surface of the earth:</div><div><br></div><div><div> res@mpLambertParallel1F</div><div> res@mpLambertParallel2F</div><div> res@mpLambertMeridianF</div><div> res@mpLimitMode</div></div><div><br></div><div>Copy these settings from other WRF plot programs. If they are values read from WRF data files, you might have to get the actual values and hard code them into the TRMM version of your plot program.</div><div><br></div><div><div>--Dave</div><div><div><br></div><div><br></div><div><div class="gmail_extra"><div class="gmail_quote">On Thu, Aug 18, 2016 at 2:55 AM, 易路 <span dir="ltr"><<a href="mailto:dg1225033@smail.nju.edu.cn" target="_blank">dg1225033@smail.nju.edu.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;"><div>Hi all, </div><div> I would like to plot the TRMM 3B42 precipitation data (0.25 degree) on a map with the "Lambert Comformal" projection, so as to keep the same projection with the WRF output data. But when I used the funtions like rgrid2rcm or esmf_regrid, the resolution of the TRMM data changed from the original 0.25 degree to the resolution of WRF output data.</div><div> So I doubt whether there is any other functions to change the TRMM data on a rectilinear lat/lon grid to a curvilinear grid whithout changing its original resolution?</div><div> </div><div>Thanks a lot!</div><div>Best regards!</div></blockquote></div></div></div></div></div></div></div></div>
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