Hi Land Model Working Group,

Our group is running the released version of CESM1.2 over Cheyenne (cesm1_2_2_1) with compset B1850C5CN in res f19_g16. We have used dynamic pft by specifying "fpftdyn" in user namelist "user_nl_clm".

After a integration of over 340 model years, the simulation aborted with "column cbalance error".

I have checked this "cbalance error" in this forum, and the link below shows that a total of 4 posts with 3 of them having very similar problems of cbalance we are having, but I couldn't find clear answers from any of the posts.

https://bb.cgd.ucar.edu/search/node/cbalance

I'm wondering whether the LMWG can give me some hints about how to solve this error.

Thank you very much for your time!

48: column cbalance error = 1.263106241822243E-008 11319

48: begcb = 111711217.054611

48: endcb = 111749016.684045

48: delta store = 37799.6294338852

48: input mass = 0.000000000000000E+000

48: output mass = -37799.6294338978

48: net flux = 37799.6294338978

48: nee = -37799.6294338978

48: gpp = 0.000000000000000E+000

48: er = -37799.6294374520

48: col_fire_closs = 0.000000000000000E+000

48: col_hrv_xsmrpool_to_atm = -7.925924159820731E-008

48: dwt_closs = 9.654961837841052E-008

48: product_closs = 3.536909218513369E-006

Feng