UFS Medium-Range Weather (MRW) Practical Session Guide | Session 1: Set Up and Run the Model > 9. Compare outputs

Changing the concentration of CCN creates a noticeable difference in the total cloud cover. Now that you've completed both runs compare the total cloud cover before and after the CCN change.

We are providing a script that plots the differences between control and test runs for 2m temperature (tmp2m), total precipitation (tprcp), and atmospheric column total cloud cover (tcdc_aveclm) at 48h.

To get and run this NCL script execute the following commands. This script will produce png files for each variable being plotted. The argument "c=" is the control run directory, and "t=" is the test run directory.

cd $UFS_SCRATCH
wget https://raw.githubusercontent.com/wiki/ufs-community/ufs-mrweather-app/files/plot_ufs_sfcf_diff.ncl
ncl plot_ufs_sfcf_diff.ncl 'c="ufs-mrweather-app-workflow.c96/run"' 't="ufs-mrweather-app-workflow.c96_exp/run"'

View the total cloud cover:

display plot_ufs_phyf_diff_tcdc_aveclm.png

Your NCL output of atmospheric column total cloud cover difference should look like this:

 

 

Atmos Column Total Cloud Cover Difference

You can also look at the 2-meter temperature and precipitation:

display plot_ufs_phyf_diff_tmp2m.png
display plot_ufs_phyf_diff_tprcp.png

 

Congratulations!  You've completed Session 1.