Hi,
I am running CLM5 on a local linux machine, and have done so successfully with SP mode. I am running it on a custom grid, for which I have created my own surface data/domain files and forcing data. However, recently I attempted to set up a BGC case, and keep running into the problem of carbon patch turning negative, beyond the critical cnegcrit value after ~600 timesteps (using 3hr time-steps) - see the attached lnd.log. I have tried switching to the CLM4.5 cnegcrit limits (600 instead of 60), but it only takes a bit longer before it crashes. I have also tried using different forcing datasets (all of which work with SP mode) which does not appear to be the problem. It also looked at the development of leafc over time, which starts out normal and decreases pretty much linearly until it hits the critical value. Do you have any idea what could be the problem/what I am doing wrong? When looking into this I found this issue: Clm45BgcCrop case dies due to negative leafn · Issue #66 · ESCOMP/CTSM, but this was fixed so I don't think it is the problem. Any help with this would be appreciated.
Thanks a lot,
Johanna
I am running CLM5 on a local linux machine, and have done so successfully with SP mode. I am running it on a custom grid, for which I have created my own surface data/domain files and forcing data. However, recently I attempted to set up a BGC case, and keep running into the problem of carbon patch turning negative, beyond the critical cnegcrit value after ~600 timesteps (using 3hr time-steps) - see the attached lnd.log. I have tried switching to the CLM4.5 cnegcrit limits (600 instead of 60), but it only takes a bit longer before it crashes. I have also tried using different forcing datasets (all of which work with SP mode) which does not appear to be the problem. It also looked at the development of leafc over time, which starts out normal and decreases pretty much linearly until it hits the critical value. Do you have any idea what could be the problem/what I am doing wrong? When looking into this I found this issue: Clm45BgcCrop case dies due to negative leafn · Issue #66 · ESCOMP/CTSM, but this was fixed so I don't think it is the problem. Any help with this would be appreciated.
Thanks a lot,
Johanna