<div dir="ltr"><div><div><div>What version of NCL are you using?<br><br></div><div>*Always* include that in a new thread.<br><br></div><div>%> ncl -V<br><br>===============<br></div><div>grib (grib-1, grib-2), netCDF (netCDF-3, netCDF-4), HDF-4/5-EOS, HDF5<br><br></div><b>**It does not matter.**</b><br><br> NCL's <b>addfiles</b> can read one or more in any of these formats.<br><br><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/addfiles.shtml" target="_blank">https://www.ncl.ucar.edu/Docum<wbr>ent/Functions/Built-in/addfile<wbr>s.shtml</a><br><br>===<br></div>NCL has been used to read terabytes of ERA-I, NCEP and MERRA data ...<br><br></div><div>Typically, MERRA2 files have a suffix of .nc4<br><br></div><div>NCL reads these without a problem.<br></div><br>MERRA:%> <b>ncl_filedump </b>MERRA2_400.tavg1_2d_slv_Nx.201<wbr>40101.<b>nc4</b><br><div><br></div><div>[snip]<br></div><div>    Filename    :     MERRA2_400.tavg1_2d_slv_Nx.201<wbr>40101.nc4<br>    Conventions    :     CF-1<br>    Institution    :     NASA Global Modeling and Assimilation Office<br>    References    :     <a href="http://gmao.gsfc.nasa.gov" target="_blank">http://gmao.gsfc.nasa.gov</a><br>    Format    :     NetCDF-4/HDF-5<br></div><div>[snip]<br></div><div><div><br>===<br><b>addfile/addfiles</b> look at the file extension. Your file has and extension of:  <b>.nc</b><br><a href="http://MERRA2_200.tavgM_3d_cld_Np.199902.nc4.nc" target="_blank">MERRA2_200.tavgM_3d_cld_Np.199<wbr>902.nc4.nc</a><br><br></div><div>However, the above file is a netCDF-4 file.<br><br></div><div>Who/What added the extra <b>.nc</b> ? <br><br><br></div><div>Cheers<br></div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Dec 23, 2017 at 8:53 PM, Wang Xinyue via ncl-talk <span dir="ltr"><<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi<div><br></div><div>I downloaded ERA-I data directly in nc format.</div><div><br></div><div>Yes you are right, I can use addfiles to read some nc data, such as NECP nc data.</div><div>However, when I use the same commands to read ERA-I data and MERRA2 data, it doesn’t work. I do not know why.</div><div><br></div><div>Best regards,</div><div>Xinyue<br><div><blockquote type="cite"><span class=""><div>On Dec 24, 2017, at 12:49, Krishnamoorthy Chandramouli <<a href="mailto:chandrakrishna.90@gmail.com" target="_blank">chandrakrishna.90@gmail.com</a>> wrote:</div><br class="m_-7625188008156634045Apple-interchange-newline"></span><div><span class=""><div dir="ltr"><div><div><div><div>Hi<br><br>From your error message it looks like you want to read ERA data<br><br>I think ERA interim data is in grib format.<br><br></div>I used to convert it to netcdf using ncl_convert2nc <br><br></div>then i read the file.<br><br></div>If you want to read nc4 file. you can do it directly using addfile. <br><br></div>I have read the nc4 IMERG data recently, i never encountered a problem.<br><br><br></div></span><div class="gmail_extra"><br clear="all"><div><div class="m_-7625188008156634045gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><b>Regards,</b><br></div><i>Krishnamoorthy Chandramouli</i><br></div></div></div>
<br><div class="gmail_quote"><span class="">On Sun, Dec 24, 2017 at 9:06 AM, Wang Xinyue via ncl-talk <span dir="ltr"><<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><span class=""><span style="font-size:14px">Hi Karin,</span><div><span style="font-size:14px"><br></span></div><div><span style="font-size:14px">Thanks for the reply.</span></div><div><span style="font-size:14px">However, it did not work, I got the same warning:</span></div></span><div><span id="m_-7625188008156634045cid:5E683705-5946-4B5A-99B7-86499EB325FD"><PastedGraphic-3.png></span><div><div class="h5"><br><div><blockquote type="cite"><div>On Dec 22, 2017, at 23:59, Karin Meier-Fleischer <<a href="mailto:meier-fleischer@dkrz.de" target="_blank">meier-fleischer@dkrz.de</a>> wrote:</div><br class="m_-7625188008156634045m_5232424483728851428Apple-interchange-newline"><div>
  
    
  
  <div text="#000000" bgcolor="#FFFFFF">
    Try:<br>
    <pre><pre><pre>fils = systemfunc("ls *.nc")
setfileoption("nc", "FileStructure", "Advanced")
f = addfiles(fils,"r")
</pre></pre></pre>
    -Karin<br>
    <br>
    <div class="m_-7625188008156634045m_5232424483728851428moz-cite-prefix">Am 22.12.17 um 12:20 schrieb Wang
      Xinyue:<br>
    </div>
    <blockquote type="cite">
      
      <span style="font-size:14px">Hi Karin,</span>
      <div><span style="font-size:14px"><br>
        </span>
        <div><span style="font-size:14px">Thanks for
            your prompt reply!</span></div>
        <div><span style="font-size:14px">The 199902
            dataset is just one of the datasets I want to read, I
            selected that one randomly and every single dataset got the
            same warning as:</span></div>
        <div>
          <blockquote type="cite">
            <div text="#000000" bgcolor="#FFFFFF">
              <blockquote type="cite">
                <div style="margin:0px;font-size:18px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">
                    <div style="margin:0px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures">warning:_NclOpenFile: Can
                        not open file
                        </.../.../merra2/<a href="http://merra2_200.tavgm_3d_cld_np.199902.nc4.nc/" target="_blank">MERRA2_200.ta<wbr>vgM_3d_cld_Np.199902.nc4.nc</a>>;
                        file format not supported or file is corrupted</span></div>
                  </span></div>
              </blockquote>
            </div>
          </blockquote>
        </div>
        <div>
          <div text="#000000" bgcolor="#FFFFFF">
            <blockquote type="cite">
              <div style="margin:0px;font-size:18px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">
                  <div style="margin:0px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"><br>
                    </span></div>
                </span></div>
            </blockquote>
          </div>
        </div>
        <div><span style="font-size:14px"><br>
          </span></div>
        <div><span style="font-size:14px">The
            ncl_filedump output is like this:</span></div>
        <div><span style="font-size:14px"><br>
          </span></div>
        <div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">Variable: f</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">Type: file</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">filename:<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>MERRA2_400.tavgM_3d_cld_Np.201<wbr>112.nc4</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">path:<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>/.../<a href="http://merra2_400.tavgm_3d_cld_np.201112.nc4.nc/" target="_blank">MERRA2_400.tavgM_3d_cld_N<wbr>p.201112.nc4.nc</a></span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">   file global attributes:</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      History : Original
              file generated: Sat Jul  4 21:58:25 2015 GMT</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Filename :
              MERRA2_400.tavgM_3d_cld_Np.201<wbr>112.nc4</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Comment : GMAO
              filename:
              d5124_m2_jan10.tavg3_3d_cld_Np<wbr>.monthly.201112.nc4</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Conventions : CF-1</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Institution : NASA
              Global Modeling and Assimilation Office</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      References : <a href="http://gmao.gsfc.nasa.gov/" target="_blank">http://gmao.gsfc.nasa.gov</a></span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Format :
              NetCDF-4/HDF-5</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      SpatialCoverage :
              global</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      VersionID : 5.12.4</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      TemporalRange :
              1980-01-01 -> 2016-12-31</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">   
                identifier_product_doi_autho<wbr>rity : <a href="http://dx.doi.org/" target="_blank">http://dx.doi.org/</a></span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      ShortName : M2TMNPCLD</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      RangeBeginningDate :
              2011-12-01</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      RangeEndingDate :
              2011-12-31</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      GranuleID :
              MERRA2_400.tavgM_3d_cld_Np.201<wbr>112.nc4</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      ProductionDateTime :
              Original file generated: Sat Jul  4 21:58:25 2015 GMT</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      LongName : MERRA2
              tavg3_3d_cld_Np:
              3d,3-Hourly,Time-Averaged,Pres<wbr>sure-Level,Assimilation,Cloud
              Diagnostics Monthly Mean</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Title : MERRA2
              tavg3_3d_cld_Np:
              3d,3-Hourly,Time-Averaged,Pres<wbr>sure-Level,Assimilation,Cloud
              Diagnostics Monthly Mean</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      SouthernmostLatitude
              : -90.0</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      NorthernmostLatitude
              : 90.0</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      WesternmostLongitude
              : -180.0</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      EasternmostLongitude
              : 179.375</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      LatitudeResolution :
              0.5</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      LongitudeResolution :
              0.625</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      DataResolution : 0.5
              x 0.625 (42 pressure levels)</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Source : CVS tag:
              GEOSadas-5_12_4</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      Contact : <a href="http://gmao.gsfc.nasa.gov/" target="_blank">http://gmao.gsfc.nasa.gov</a></span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">   
                identifier_product_doi : 10.5067/J9R0LXGH48JR</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      RangeBeginningTime :
              00:00:00.000000</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      RangeEndingTime :
              23:59:59.000000</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">   
                DODS_EXTRA.Unlimited_Dimensi<wbr>on : time</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      history : 2017-12-10
              06:40:28 GMT Hyrax-1.13.4 <a href="https://goldsmr5.gesdisc.eosdis.nasa.gov/opendap/MERRA2_MONTHLY/M2TMNPCLD.5.12.4/2011/MERRA2_400.tavgM_3d_cld_Np.201112.nc4.nc?CLOUD[0:0][0:41][0:360][0:575],time,lev,lat[0:360],lon[0:575" target="_blank">https://goldsmr5.gesdisc.eosdi<wbr>s.nasa.gov:443/opendap/MERRA2_<wbr>MONTHLY/M2TMNPCLD.5.12.4/2011/<wbr>MERRA2_400.tavgM_3d_cld_Np.<wbr>201112.nc4.nc?CLOUD[0:0][0:41]<wbr>[0:360][0:575],time,lev,lat[0:<wbr>360],lon[0:575</a>]</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">   dimensions:</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      time = 1</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      lev = 42</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      lat = 361</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      lon = 576</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">   variables:</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      float CLOUD ( time,
              lev, lat, lon )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         long_name :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">      </span>cloud_fraction_for_radiation</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         units :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>1</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         _FillValue :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">     </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         missing_value :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         fmissing_value :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap"> </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmax :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmin :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>-1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         valid_range :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">    </span>(
              -1e+15, 1e+15 )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         origname :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>CLOUD</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         fullnamepath :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>/CLOUD</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255);min-height:25px"><span style="font-variant-ligatures:no-common-ligatures"></span><br>
          </div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      double lat ( lat )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         CLASS :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>DIMENSION_SCALE</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         NAME :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>lat</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         long_name :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">      </span>latitude</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         units :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>degrees_north</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmax :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmin :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>-1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         valid_range :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">    </span>(
              -1e+15, 1e+15 )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         origname :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>lat</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         fullnamepath :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>/lat</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255);min-height:25px"><span style="font-variant-ligatures:no-common-ligatures"></span><br>
          </div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      double lev ( lev )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         CLASS :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>DIMENSION_SCALE</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         NAME :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>lev</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         long_name :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">      </span>vertical
              level</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         units :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>hPa</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         positive :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>down</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmax :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmin :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>-1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         valid_range :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">    </span>(
              -1e+15, 1e+15 )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         origname :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>lev</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         fullnamepath :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>/lev</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255);min-height:25px"><span style="font-variant-ligatures:no-common-ligatures"></span><br>
          </div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      double lon ( lon )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         CLASS :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>DIMENSION_SCALE</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         NAME :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>lon</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         long_name :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">      </span>longitude</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         units :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>degrees_east</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmax :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmin :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>-1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         valid_range :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">    </span>(
              -1e+15, 1e+15 )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         origname :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>lon</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         fullnamepath :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>/lon</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255);min-height:25px"><span style="font-variant-ligatures:no-common-ligatures"></span><br>
          </div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">      integer time ( time )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         CLASS :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>DIMENSION_SCALE</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         NAME :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>time</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         long_name :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">      </span>time</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         units :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">  </span>minutes
              since 2011-12-01 01:30:00</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         time_increment :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap"> </span>60000</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         begin_date :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">     </span>20111201</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         begin_time :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">     </span>13000</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmax :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         vmin :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>-1e+15</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         valid_range :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">    </span>(
              -1e+15, 1e+15 )</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         origname :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">       </span>time</span></div>
          <div style="margin:0px;font-size:22px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">         fullnamepath :<span class="m_-7625188008156634045m_5232424483728851428Apple-tab-span" style="white-space:pre-wrap">   </span>/time</span></div>
        </div>
      </div>
      <div style="margin:0px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-size:14px">Thanks,</span></div>
      <div style="margin:0px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-size:14px">Xinyue</span></div>
      <div>
        <blockquote type="cite">
          <div>On Dec 22, 2017, at 19:16, Karin Meier-Fleischer
            via ncl-talk <<a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a>> wrote:</div>
          <br class="m_-7625188008156634045m_5232424483728851428Apple-interchange-newline">
          <div>
            
            <div text="#000000" bgcolor="#FFFFFF"> Hi Xinyue,<br>
              <br>
              please, send the output of <b>ncl_filedump</b>
              from <a href="http://merra2_200.tavgm_3d_cld_np.199902.nc4.nc/" target="_blank">MERRA2_200.tavgM_3d_cld_Np.199<wbr>902.nc4.nc</a><br>
              <br>
              -Karin<br>
              <br>
              <br>
              <div class="m_-7625188008156634045m_5232424483728851428moz-cite-prefix">Am 22.12.17 um 10:16 schrieb
                Wang Xinyue via ncl-talk:<br>
              </div>
              <blockquote type="cite">
                
                <font size="4" face="Times">Hi there,</font>
                <div><font size="4" face="Times"><br>
                  </font></div>
                <div><font size="4" face="Times">I met
                    with a problem in reading nc files.</font></div>
                <div><font size="4" face="Times">I can
                    use the following commands to read NCEP datasets:</font></div>
                <div><br>
                </div>
                <div><span style="background-color:rgb(255,255,255)"><font size="4" face="Menlo">fils = systemfunc("ls
                      /.../.../ncep/omega/*.nc”)</font></span> </div>
                <div>
                  <div style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">f = addfiles(fils,
                      "r”)</span></div>
                </div>
                <div style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures"><br>
                  </span></div>
                <div style="margin:0px;font-size:18px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times">But when I use the same commands to
                      read ERA-I datasets and MERRA2 datasets, it warned
                      like this:</font></span></div>
                <div style="margin:0px;font-size:18px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures"><br>
                  </span></div>
                <div style="margin:0px;font-size:18px;line-height:normal;background-color:rgb(255,255,255)"><span style="font-variant-ligatures:no-common-ligatures">
                    <div style="margin:0px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures">warning:_NclOpenFile:
                        Can not open file
                        </.../.../merra2/<a href="http://merra2_200.tavgm_3d_cld_np.199902.nc4.nc/" target="_blank">MERRA2_200.ta<wbr>vgM_3d_cld_Np.199902.nc4.nc</a>>;
                        file format not supported or file is corrupted</span></div>
                    <div style="margin:0px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"><br>
                      </span></div>
                    <div style="margin:0px;line-height:normal"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times">Is anyone there had similar
                          experience before? And how did you fix it?</font></span></div>
                    <div style="margin:0px;line-height:normal"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times"><br>
                        </font></span></div>
                    <div style="margin:0px;line-height:normal"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times">Looking forward to your reply.</font></span></div>
                    <div style="margin:0px;line-height:normal"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times"><br>
                        </font></span></div>
                    <div style="margin:0px;line-height:normal"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times">Thanks,</font></span></div>
                    <div style="margin:0px;line-height:normal"><span style="font-variant-ligatures:no-common-ligatures"><font face="Times">Xinyue</font></span></div>
                    <div style="margin:0px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"><br>
                      </span></div>
                  </span></div>
                <br>
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              <pre class="m_-7625188008156634045m_5232424483728851428moz-signature" cols="72">-- 
Dipl. Geophys. Karin Meier-Fleischer
Visualization, NCL, CDO
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