Modifying namelist using user_nl_cam file

[chillwx@gmail_com]

After creating a case, I would like to make a user_nl_cam file that contains all the changes slated for the CAM namelist before configuring. For those who do not know what I'm talking about, see slide 10 on this powerpoint:

www.cesm.ucar.edu/events/tutorials/080111/practicals_hannay.pdf

My question is what to do if I have an input, fincl2 in my case, that is very long. So far, it has been getting forcefully separated (when you run configure -case) into 2 lines which is causing the model to crash without an error message. It only took me 5 crashed runs to figure this out.

 

[eaton]

I'm not sure why slide 10 says "one line per change". The build-namelist utility reads any valid namelist syntax, so breaking your long fincl2 list into multiple lines should work. But of course it's important that you add the line breaks at appropriate places.