<div dir="ltr">OK Dave, thanks for your advice, I will do that and let you know the result.<div>Best wishes,</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 1, 2023 at 11:12 PM Dave Allured - NOAA Affiliate <<a href="mailto:dave.allured@noaa.gov">dave.allured@noaa.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">Please contact the original data provider and ask them how to get the level or height coordinates. If you do not find this in your WRF output file, then I suspect that WRF provides this as ancilliary data in a separate file. But I do not know how they actually do it.</div><div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 1, 2023 at 1:31 PM Setareh Rahimi <<a href="mailto:setareh.rahimi@gmail.com" target="_blank">setareh.rahimi@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Thanks for your reply. It is WRF-Chem out put that I am using. So this is the original data file. So what should I do please?</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 1, 2023 at 22:45 Dave Allured - NOAA Affiliate <<a href="mailto:dave.allured@noaa.gov" target="_blank">dave.allured@noaa.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Setareh, it looks like you are starting with processed data files that did not preserve the original level coordinates. Please go back to your original data source and get the numeric height values for the 30 levels. Add those levels as a new coordinate variable in your current input files. There is more than one way to do that. Be careful to use and verify the correct ordering, up or down.<div><br></div><div>Note that the actual name of a level or height dimension is not fixed and can change between files. Above, "bottom_top" and "level" are the same thing.<br></div></div>
</blockquote></div></div>
</blockquote></div></div>
</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature">S.Rahimi<br><br></div>