<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Your WRF netCDF file has the grid coordinates. The "projections" are not needed,<br></div><div><br></div><div>[1] Example 1<br></div><div> float T_2m(time, <b>south_north, west_east</b>) ;<br> T_2m:long_name = "Temperature at 2 m" ;<br> T_2m:standard_name = "air_temperature" ;<br> T_2m:units = "degC" ;<br> T_2m:_FillValue = 1.e+20f ;<br> T_2m:<b>coordinates = "lon lat" <====<br></b></div><div><b><br></b></div><div><b> f</b>loat <b>lat</b>(<b>south_north, west_east</b>) ;<br> lat:long_name = "Latitude" ;<br> lat:standard_name = "latitude" ;<br> lat:units = "degrees_north" ;<br> float <b>lon</b>(<b>south_north, west_east</b>) ;<br> lon:long_name = "Longitude" ;<br> lon:standard_name = "longitude" ;<br> lon:units = "degrees_east" ;</div><div><b><br></b></div><div><b>---</b></div><div>Example 2</div><div><b><br></b></div><div>float <b>T2</b>(Time,<b> south_north, west_east) ;<br> T</b>2:FieldType = 104 ;<br> T2:MemoryOrder = "XY " ;<br> T2:description = "TEMP at 2 M" ;<br> T2:units = "K" ;<br> T2:stagger = "" ;<b><br> T2:coordinates = "XLONG XLAT XTIME" ; <====<br></b></div><div><b> f</b>loat <b>XLAT</b>(Time, <b>south_north, west_east</b>) ;<br> XLAT:FieldType = 104 ;<br> XLAT:MemoryOrder = "XY " ;<br> XLAT:description = "LATITUDE, SOUTH IS NEGATIVE" ;<br> XLAT:units = "degree" ;<br> XLAT:stagger = "" ;<br> float <b>XLONG</b>(Time, <b>south_north, west_east</b>) ;<br> XLONG:FieldType = 104 ;<br> XLONG:MemoryOrder = "XY " ;<br> XLONG:description = "LONGITUDE, WEST IS NEGATIVE" ;<br> XLONG:units = "degree" ;<br> XLONG:stagger = "" ;</div><div><b><br></b></div><div>====</div><div>There are numerous NCL examples of regridding WFR coordinates [curvilinear grid] to other coordinates. Generally, "observation-based" grid are rectilinear.</div><div><b><br></b></div><div><b><a href="http://www.ncl.ucar.edu/Applications/ESMF.shtml">http://www.ncl.ucar.edu/Applications/ESMF.shtml</a><br></b></div><div><b><br></b></div><div><b></b><br></div></div></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Mar 8, 2019 at 1:10 AM <a href="mailto:lslrsgis@whu.edu.cn">lslrsgis@whu.edu.cn</a> <<a href="mailto:lslrsgis@whu.edu.cn">lslrsgis@whu.edu.cn</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>
<div><span></span><div>Hi everyong,</div><div><br></div><div>I am trying to compare regional simulation WRFout files (lambert projection) with Grided Observations (lat-lon projection).</div><div><br></div><div>Can I find ncl function or script to convert wrfout from lambert to lat-lon? Or is there any better method for comparison?</div><div><br></div><div>Thanks</div></div>
</div>_______________________________________________<br>
ncl-talk mailing list<br>
<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
List instructions, subscriber options, unsubscribe:<br>
<a href="http://mailman.ucar.edu/mailman/listinfo/ncl-talk" rel="noreferrer" target="_blank">http://mailman.ucar.edu/mailman/listinfo/ncl-talk</a><br>
</blockquote></div>