Problems with the output variable ALT （current depth of thaw ）

[renqiujie]

Dear all，
I have a problem now. I create the single point test of CLM5 with the compset 2000_DATM%GSWP3v1_CLM50%BGC_SICE_SOCN_SROF_SGLC_SWAV in Tibetan Plateau ( at several sites, such Dangxiong, Maqu, Naqu, etc), and run them from 2000 to 2010 years. I find that the output variable ALT in each site is 41.9984, which is the maxmum soil deth. I think the freezing and thawing depth in different regions of the Qinghai Tibet Plateau should be different, so what is the problem? Is my compset wrong?

Look forward to your reply！

 

[oleson]

One possibility is that the soil temperatures are not in equilibrium. It could take a number of years for the deep soil temperatures to equilibrate depending on how the model was initialized. You could plot the deep soil temperatures to see how they are evolving.
Another possibility is that the GSWP3v1 forcing is not accurate for the sites you are running.