<div dir="ltr">Thank you for your help! but I still receive this error :<br><div><br></div><div>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:16px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures">fatal:Variable (XLAT) is undefined</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:16px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures">fatal:["Execute.c":8637]:Execute: Error occurred at or near line 186 in file aod</span></p>
<p class="gmail-p2" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:16px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:19px"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"></span><br></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:16px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures">fatal:Variable (XLONG) is undefined</span></p>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:16px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures">fatal:["Execute.c":8637]:Execute: Error occurred at or near line 187 in file aod</span></p>
<p class="gmail-p2" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:16px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:19px"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures"></span><br></p></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 14, 2023 at 4:27 AM Dennis Shea <<a href="mailto:shea@ucar.edu">shea@ucar.edu</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 dir="ltr"><div>By netCDF definition, a coordinate variable must be one-dimensional:</div><div><br></div><div>The XLAT, XLONG variables are three dimensional.</div><div><br></div><div><span style="font-variant-ligatures:no-common-ligatures">Time | 24] x [south_north | 229] x [west_east | 219]</span></div><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div><span style="font-variant-ligatures:no-common-ligatures">As with the WRF files, these must be written as regular variables.</span></div><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div><span style="font-variant-ligatures:no-common-ligatures"> ncdf->XLAT = XLAT</span></div><div><span style="font-variant-ligatures:no-common-ligatures"> ncdf->XLONG = XLONG<br></span></div><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div><span style="font-variant-ligatures:no-common-ligatures">Most commonly, the XLAT/XLONG variables do not vary with time. Hence some users just write the initial values as a two-dimensional variable<br></span></div><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div><div><span style="font-variant-ligatures:no-common-ligatures"> ncdf->XLAT = XLAT(0,:,:)</span></div><div><span style="font-variant-ligatures:no-common-ligatures"> ncdf->XLONG = XLONG(0,:,:)<br></span></div><div><span style="font-variant-ligatures:no-common-ligatures"><br><br></span></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 13, 2023 at 1:21 AM Setareh Rahimi <<a href="mailto:setareh.rahimi@gmail.com" target="_blank">setareh.rahimi@gmail.com</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 dir="ltr">Thanks Dennis, but the page is not available!</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 13, 2023 at 2:58 AM Dennis Shea <<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</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 dir="ltr">See <a href="http://copy_VarCoords" target="_blank">copy_VarCoords</a><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 10, 2023 at 1:39 PM Setareh Rahimi <<a href="mailto:setareh.rahimi@gmail.com" target="_blank">setareh.rahimi@gmail.com</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 dir="ltr">Thank you so much for your help. How can I assign lat/lon to the AOD, please?<div>I used the below lines in the script but received the following error: " <span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><span style="background-color:rgb(255,229,153)"><font face="arial, sans-serif">fatal:(XLAT) is not a named dimension in variable (a2)</font></span><font face="arial, sans-serif">".</font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></span></div><div>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"> system("/bin/rm -f AOD550_2D.nc")<span> </span>; remove any pre-existing file</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>ncdf = addfile("AOD550_2D.nc" ,"c")<span> </span>; open output netCDF file</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:16px"><span style="font-variant-ligatures:no-common-ligatures"></span><br></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>;===================================================================</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>; create global attributes of the file (optional)</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>;===================================================================</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>fAtt <span> </span>= True<span> </span>; assign file attributes</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>fAtt@title <span> </span>= "Derived AOD"</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>fAtt@creation_date = systemfunc ("date")</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:16px"><span style="font-variant-ligatures:no-common-ligatures"></span><br></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>fileattdef( ncdf, fAtt )<span> </span>; copy file attributes</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:16px"><span style="font-variant-ligatures:no-common-ligatures"></span><br></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>;===================================================================</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>; make time an UNLIMITED dimension; recommended<span> </span>for most applications</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>;===================================================================</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>filedimdef(ncdf,"time",-1,True)</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:16px"><span style="font-variant-ligatures:no-common-ligatures"></span><br></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>;===================================================================</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>; output variables directly; NCL will call appropriate functions</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>; to write the meta data associated with each variable</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>;===================================================================</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures;background-color:rgb(147,196,125)"><span> </span>ncdf->AOD550_2D<span> </span>= AOD550_2D</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0);min-height:16px"><span style="background-color:rgb(147,196,125)"><span style="font-variant-ligatures:no-common-ligatures"></span><br></span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures;background-color:rgb(147,196,125)"><span> </span>ncdf-></span><span style="font-variant-ligatures:no-common-ligatures"><span style="background-color:rgb(224,102,102)">a2</span><span style="background-color:rgb(147,196,125)"> </span><span style="background-color:rgb(147,196,125)">= </span><span style="background-color:rgb(224,102,102)">a2</span><span style="background-color:rgb(147,196,125)">(0,:,:,:)</span></span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures;background-color:rgb(147,196,125)"><span> </span>AOD550_2D!0<span> </span>= "lat"</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures;background-color:rgb(147,196,125)"><span> </span>AOD550_2D!1<span> </span>= "lon"</span></p></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);background-color:rgb(147,196,125)"><font face="arial, sans-serif"><br></font></span></div><div><span style="background-color:rgb(147,196,125);font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"> </font></span><span style="background-color:rgb(147,196,125);font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);font-family:Menlo;font-size:14px">AOD550_2D&lat</span><span style="background-color:rgb(147,196,125);font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);font-family:Menlo;font-size:14px"> </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0);font-family:Menlo;font-size:14px"><span style="background-color:rgb(147,196,125)">= </span><span style="background-color:rgb(224,102,102)">a2</span><span style="background-color:rgb(147,196,125)">&XLAT</span></span></div>
<div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif">===========================================================================================</font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font size="4" face="arial, sans-serif"><span style="background-color:rgb(147,196,125)">here is printVarSummary of </span><span style="background-color:rgb(224,102,102)">"a2"</span></font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></span></div><div>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Variable: a2</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Type: float</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Total Size: 144434880 bytes</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>36108720 values</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Number of Dimensions: 4</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Dimensions and sizes:<span style="white-space:pre-wrap"> </span>[Time | 24] x [bottom_top | 30] x [south_north | 229] x [west_east | 219]</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Coordinates:<span> </span></span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>Time: [ <span> </span>0..<span> </span>23]</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Number Of Attributes: 6</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>coordinates :<span style="white-space:pre-wrap"> </span>XLONG XLAT XTIME</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>stagger :<span style="white-space:pre-wrap"> </span></span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>units :<span style="white-space:pre-wrap"> </span>?</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>description :<span style="white-space:pre-wrap"> </span>bin 2 layer optical thickness</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>MemoryOrder :<span style="white-space:pre-wrap"> </span>XYZ</span></p>
<p style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>FieldType :<span style="white-space:pre-wrap"> </span>104</span></p></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></span></div><div><span style="font-variant-ligatures:no-common-ligatures;color:rgb(0,0,0)"><font face="arial, sans-serif"><br></font></span></div>
</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 10, 2023 at 8:17 PM Dennis Shea <<a href="mailto:shea@ucar.edu" target="_blank">shea@ucar.edu</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 dir="ltr"><div>netCDF operator 'ncks' to extract a variable from a netCDF file and copy it to another<br></div><div><br></div><div>%> <code>ncks -v xxx Model.nc XXX.nc</code></div><div><code><br></code></div><div><code>where 'xxx' is the name of the variable on the model file</code></div><div><code>===============================</code></div><div><code> AOD</code></div><div><pre> <a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/system.shtml" target="_blank"><strong>system</strong></a>("/bin/rm -f AOD.nc") ; remove any pre-existing file
ncdf = <a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/addfile.shtml" target="_blank"><strong>addfile</strong></a>("AOD.nc" ,"c") ; open output netCDF file
;===================================================================
; create global attributes of the file (optional)
;===================================================================
fAtt = True ; assign file attributes
fAtt@title = "Derived AOD"
fAtt@creation_date = <a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/systemfunc.shtml" target="_blank"><strong>systemfunc</strong></a> ("date")
<a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/fileattdef.shtml" target="_blank"><strong>fileattdef</strong></a>( ncdf, fAtt ) ; copy file attributes
;===================================================================
; make time an UNLIMITED dimension; recommended for most applications
;===================================================================
<a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/filedimdef.shtml" target="_blank"><strong>filedimdef</strong></a>(ncdf,"time",-1,True)
;===================================================================
; output variables directly; NCL will call appropriate functions
; to write the meta data associated with each variable
;===================================================================
ncdf->AOD = AOD </pre></div><div><code>================================<br></code></div><div><code>See<br></code></div><div><b><a href="https://www.ncl.ucar.edu/Applications/method_1.shtml" target="_blank">https://www.ncl.ucar.edu/Applications/method_1.shtml</a></b></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 10, 2023 at 1:02 AM Setareh Rahimi via ncl-talk <<a href="mailto:ncl-talk@mailman.ucar.edu" target="_blank">ncl-talk@mailman.ucar.edu</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 dir="ltr"><div><font face="arial, sans-serif">Dear all,</font><div><font face="arial, sans-serif">I have calculated Aerosol Optical Depth (AOD) from WRF-Chem output using "TAUAER2" and "TAUAER3" variables (script attached). Instead of using the created AOD to plot it, I would like to save the AOD as a NetCDF or tiff file. So how can I do this, please?</font></div></div><div><font face="arial, sans-serif">I have another question. How can I extract one variable from the model output and save it as a NetCDF or tiff file?</font></div><div><font face="arial, sans-serif">Please help me with these issues.</font></div><div><font face="arial, sans-serif">Kind regards,</font></div><div><font face="arial, sans-serif"><br></font></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature">S.Rahimi<br><br></div></div>
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</blockquote></div>
</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature">S.Rahimi<br><br></div>
</blockquote></div>
</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature">S.Rahimi<br><br></div>
</blockquote></div>
</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature">S.Rahimi<br><br></div>