<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I don't know what CDO does to does to the time metadata with the yseasave command, but GrADS obviously doesn't like it. I would try using xdfopen with a full TDEF statement to override the metadata in the file. If that doesn't work, please send the output from 'ncdump -c', your xdf-style descriptor, and the GrADS session with any error messages. <div>--Jennifer<br><div><br><div><div>On Jan 6, 2011, at 11:27 AM, saiguran loisulie wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font: inherit;">Hi<br><br>My GrADS version/configurations are "Config: v2.0.a8 little-endian readline printim grib2 netcdf hdf4-sds hdf5 opendap-grids,stn geotiff shapefile "<br><br>I have monthly mean files from NCEP Reanalysis;<br><br>I used "cdo -r yseasavg air2m.mon.mean.nc air2m.seas.mean.nc" to generate seasonal climatologies but I get the following error;<br><br>sdfopen air2m.seas.mean.nc <br>Scanning self-describing file: air2m.seas.mean.nc<br>gadsdf: Time unit has too small an increment (min. 1 minute).<br><br>I also tried;<br><br>cdo yseasavg air2m.mon.mean.nc air2m.seas.mean.nc<br><br>But when I;<br><br>ga-> sdfopen air2m.seas.mean.nc <br>Scanning self-describing file: air2m.seas.mean.nc<br>SDF file has no discernable time coordinate -- using default values.<br>gadsdf: SDF file does not have any non-coordinate variables.<br><br><br>Any suggestions on how to handle this?<br><br>Thank you.<br>Saiguran Loisulie<br> Climate Systems Analysis Group<br> Environmental and Geographical Science Department<br> University of Cape Town<br> Private Bag X3<br> Rondebosch<br> 7701 <br> SOUTH AFRICA<br> <br> CELL 0748 068 230</td></tr></tbody></table><br> _______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>http://gradsusr.org/mailman/listinfo/gradsusr<br></blockquote></div><br><div apple-content-edited="true"> <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 style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><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; "><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></div></span> </div><br></div></div></body></html>