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<p class="MsoNormal"><span style="font-size:11.0pt">Dear ncl-tal group,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">I have a question that when I use NCL “systemfunc” to read many ERA5 files.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">The detail as following:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Because of the download limitation size of ERA5, we couldn’t download a long time series what we need in one file. So we usually have files like this: 1979_1994_pre_6hour_u.nc 1995_2010_pre_6hour_u.nc
2011_2018_pre_6hour_u.nc <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Then I will use NCL function “systemfunc” to list all the files and read them at the same time. But, at the end, when I calculate an area mean of one variable, the final values only right at
the first file, that is from 1979 to 1994 in my case. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">When I calculate every file separately, the results are right.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">So the problem is that the NCL could not process several splitted ERA5 files right. Does anyone encounter the same problem? If there are any solutions for that?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Best,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Shasha <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt"><o:p> </o:p></span></p>
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