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Ming Chen said:Yes the level heights vary with time during the integration.
Ming Chen said:All variables in wrfout are in model levels ( either full or half levels). If you want to get variables at specified levels other than the model levels, you need to do vertical interpolation. Several post-process packages like UPP, RIP, NCL can handle the vertical interpolation. Please take a look at the website here: http://www2.mmm.ucar.edu/wrf/OnLineTutorial/Graphics/index.php. The answer to your second question is yes.