All the functions needed to create plots are available under the NCL version 6.6.2, which is the version available on Casper. If you issue the command which ncl, you should see the following path. /glade/u/apps/opt/ncl/6.6.2/bin/ncl The easiest way to generate plots you are interested in is to start with an existing sample script and then modify it to suit your needs . The sample scripts are available from your WRF*/test/em_real/ directories, but can also be found in: /glade/campaign/mmm/wmr/wrf_tutorial/WRF_NCL_scripts

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1. Available NCL scripts

Below is a list of all the available scripts, in the above directory
- Suggested scripts to start with for a single file are in orange
- Suggested scripts to start with for multiple files are in teal
  

For REAL Data cases
CreateTracks.ncl wrf_AdaptiveTime.ncl wrf_cape.ncl wrf_Cloud.ncl wrf_Cross2D.ncl wrf_CrossSection_1.ncl wrf_CrossSection1.ncl wrf_CrossSection_2.ncl wrf_CrossSection2.ncl wrf_CrossSection_3.ncl wrf_CrossSection3.ncl wrf_CrossSection_4.ncl wrf_CrossSection4.ncl wrf_CrossSection_add_smooth_terrain4.ncl wrf_CrossSection_add_smooth_terrain.ncl wrf_dbz1.ncl wrf_dbz2.ncl wrf_EtaLevels.ncl wrf_eth.ncl wrf_Height2.ncl wrf_Height.ncl wrf_helicity.ncl wrf_meteo_1.ncl wrf_meteo_2.ncl wrf_meteo_3.ncl wrf_meteo_4.ncl wrf_meteo_5_limited_height.ncl wrf_meteo_5.ncl wrf_metgrid1.ncl wrf_metgrid2.ncl wrf_metgrid3.ncl wrf_metgrid4.ncl wrf_metgrid5.ncl wrf_metgrid6.ncl wrf_metgrid7.ncl wrf_metgrid8.ncl wrf_moving_nest.ncl wrf_moving_nest_overlap.ncl wrf_moving_nest_precip_2doms.ncl wrf_moving_nest_precip.ncl wrf_overlay_doms.ncl wrf_Overlay.ncl	wrf_panel1-1.ncl wrf_panel1-2.ncl wrf_panel1.ncl wrf_panel2-2.ncl wrf_panel2.ncl wrf_Precip2.ncl wrf_Precip3.ncl wrf_Precip_multi_files.ncl wrf_PressureLevel1.ncl wrf_PressureLevel2.ncl wrf_PressureLevel3.ncl wrf_pv.ncl wrf_PW2.ncl wrf_PW3.ncl wrf_PW.ncl wrf_SkewT1.ncl wrf_SkewT2.ncl wrf_SkewT3.ncl wrf_SkewT4.ncl wrf_SkewT5.ncl wrf_SkewT.ncl wrf_Surface1.ncl wrf_Surface2.ncl wrf_Surface3.ncl wrf_Surface_multi_files_avg.ncl wrf_Surface_multi_files.ncl wrf.ts.ncl wrf_updraft_helicity.ncl wrf_wind_rose.ncl wrf_wps_plot_all.ncl wrf_wps_ter1.ncl wrf_wps_ter2.ncl wrf_wps_ter3.ncl wrf_wps_ter4.ncl wrf_wps_ter5.ncl wrf_wps_ter6.ncl wrf_Zoom.ncl olr.ncl get_wrf_file_dims.ncl gWRF_merc.ncl design_grids.ncl
For Idealized cases
wrf_BWave.ncl wrf_Grav2x.ncl wrf_Hill2d.ncl wrf_QSS.ncl wrf_Squall_2d_x.ncl wrf_Squall_2d_y.ncl

2. Run NCL script

• Create your own script, or pick one from of the supplied scripts.

  If you start with a supplied script, most often all you need to do is change the input file, in this line:

  a = addfile("./wrfout_d01_2023-03-31_00:00:00 .nc","r")

  Note You do not need to change your filenames so that they have a trailing ".nc". But KEEP the trailing ".nc" in the above line, as this is used as a file type communicator to NCL.

  
  
  

• Run the script

  ncl <script>

  The output will depend on your setting of "type" in the scripts.

Detailed Running Instructions:

Detailed guidance is available in the NCL section of the WRF-ARW User's Guide and online at:
http://www2.mmm.ucar.edu/wrf/OnLineTutorial/Graphics/NCL/index.php

Continue to More Exercises If you plan to attempt more exercises right now, you can access the cases studies menu by clicking here.