Hi John,<div><br></div><div> Something tells me that you might know this. I have these CMAQ netcdf files from the DISCOVER-AQ campaign (see ncdump below). Do you happen to know the PDEF line that goes with these? I have the grid metrics in a separate file, I could always write some code to remap these, but if grads can do it on the fly it would be good enough for the exploratory data analysis that I need to perform.</div>
<div><br></div><div> Thanks,</div><div><br></div><div> Arlindo</div><div><br></div><div>-----</div><div><br></div><div><div>netcdf UMA_AOD {</div><div>dimensions:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>TSTEP = UNLIMITED ; // (48 currently)</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>DATE-TIME = 2 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>LAY = 1 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>VAR = 1 ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>ROW = 79 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>COL = 112 ;</div><div>variables:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>int TFLAG(TSTEP, VAR, DATE-TIME) ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>TFLAG:units = "<YYYYDDD,HHMMSS>" ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>TFLAG:long_name = "TFLAG " ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>TFLAG:var_desc = "Timestep-valid flags: (1) YYYYDDD or (2) HHMMSS " ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>float AOD(TSTEP, LAY, ROW, COL) ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>AOD:long_name = "AOD " ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>AOD:units = "unitless " ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>AOD:var_desc = "AOD by Mie in VIS file " ;</div><div><br></div><div>// global attributes:</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:IOAPI_VERSION = "$Id: @(#) ioapi library version 3.0 $ " ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:EXEC_ID = "???????????????? " ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:FTYPE = 1 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:CDATE = 2011182 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:CTIME = 164809 ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:WDATE = 2011182 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:WTIME = 164809 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:SDATE = 2011182 ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:STIME = 130000 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:TSTEP = 10000 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:NTHIK = 1 ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:NCOLS = 112 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:NROWS = 79 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:NLAYS = 1 ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:NVARS = 1 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:GDTYP = 2 ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:P_ALP = 33. ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:P_BET = 45. ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:P_GAM = -97. ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:XCENT = -97. ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:YCENT = 40. ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:XORIG = 984000. ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:YORIG = -384000. ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:XCELL = 12000. ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:YCELL = 12000. ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:VGTYP = 1 ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:VGTOP = 200.f ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:VGLVLS = 1.f, 0.9959855f ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:GDNAM = "AQF_CONUS_5x " ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:UPNAM = "setup " ;</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>:VAR-LIST = "AOD " ;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>:FILEDESC = "hourly 1-layer cross-point Visibility Information </div>
<div><br></div>-- <br>Arlindo da Silva<br><a href="mailto:dasilva@alum.mit.edu">dasilva@alum.mit.edu</a><br>
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