<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">You will definitely need a descriptor file for this … either for xdfopen or open. The coordinate variables have non-standard names, and there are a lot of them: <div><br></div><div><div>netcdf AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505 {</div><div>dimensions:</div><div> CH4_LayersU115 = 3 ;</div><div> CH4_LayersU231 = 3 ;</div><div> CH4_LayersU250 = 3 ;</div><div> CH4_LayersU269 = 3 ;</div><div> CO_LayersU114 = 7 ;</div><div> CO_LayersU230 = 7 ;</div><div> CO_LayersU249 = 7 ;</div><div> CO_LayersU268 = 7 ;</div><div> CoarseCldLyrsU113 = 3 ;</div><div> CoarseCldLyrsU229 = 3 ;</div><div> CoarseCldLyrsU248 = 3 ;</div><div> CoarseCldLyrsU267 = 3 ;</div><div> EmisLvlsU116 = 4 ;</div><div> EmisLvlsU232 = 4 ;</div><div> H2OPrsLvlsU112 = 12 ;</div><div> H2OPrsLvlsU228 = 12 ;</div><div> H2OPrsLvlsU247 = 12 ;</div><div> H2OPrsLvlsU266 = 12 ;</div><div> LatitudeU271 = 180 ;</div><div> LongitudeU272 = 360 ;</div><div> MWEmisLvlsU251 = 3 ;</div><div> MWEmisLvlsU270 = 3 ;</div><div> TempPrsLvlsU111 = 24 ;</div><div> TempPrsLvlsU227 = 24 ;</div><div> TempPrsLvlsU246 = 24 ;</div><div> TempPrsLvlsU265 = 24 ;</div><div>variables:</div><div><br></div><div>If all those dimensions with the same size have different values, you'll need a separate descriptor for each set of coordinates. Variables that have the same coordinates can be grouped together in a single descriptor file. </div><div>--Jennifer</div><div><br></div><div><br></div><div><br></div><div><div>On Feb 1, 2013, at 10:43 AM, M.Mahakur wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Respected All,<br><br>I tried to access the L3 AIRX3STD v5 of AQUA/AIRS data using opendap:<br><br>sdfopen <a href="http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.01.01.L3.RetStd001.v5.2.2.0.G08066120251.hdf">http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.01.01.L3.RetStd001.v5.2.2.0.G08066120251.hdf</a><br><br>It opened with the error: SDF file has no discernable time coordinate -- using default values.<br><br>Hence it printed a wrong value for time (as below):<br><br>SDF file <a href="http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf">http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf</a> is open as file 1<br>LON set to 0 360 <br>LAT set to -89.5 89.5 <br>LEV set to 0 0 <br>Time values set: 1:1:1:0 1:1:1:0 <br>E set to 1 1 <br>ga-> q file<br>File 1 : <br> Descriptor: <a href="http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf">http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf</a><br> Binary: <a href="http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf">http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf</a><br> Type = Gridded<br> Xsize = 360 Ysize = 180 Zsize = 24 Tsize = 1 Esize = 1<br> Number of Variables = 137<br><br>The major problem is it does not show all varibles. The no. of varibales are much larger than 137! I tried with opengrads also, the same problem.<br><br>How can I solve this? I am sure lot of users are using this data ..<br><br>Regards and Thanks,<br><br>Mahakur<br>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>http://gradsusr.org/mailman/listinfo/gradsusr<br></div></blockquote></div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>--</div><div>Jennifer M. Adams</div><div>IGES/COLA</div><div>4041 Powder Mill Road, Suite 302</div><div>Calverton, MD 20705</div><div><a href="mailto:jma@cola.iges.org">jma@cola.iges.org</a></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span>
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