Scheduled Downtime
On Tuesday 24 October 2023 @ 5pm MT the forums will be in read only mode in preparation for the downtime. On Wednesday 25 October 2023 @ 5am MT, this website will be down for maintenance and expected to return online later in the morning.
Normal Operations
The forums are back online with normal operations. If you notice any issues or errors related to the forums, please reach out to help@ucar.edu

CLM4.5 transient CO2 - compilation error

Hi
I am trying to set up a transient CO2 run for stand-alone CLM4.5 with CN on. I followed the instructions as given here: http://www.cesm.ucar.edu/models/cesm1.2/clm/models/lnd/clm/doc/UsersGuide/x12702.htmlThere still seems to be some mistakes in the instructions, namely, the file under models/lnd/clm/doc/UsersGuide/addco2_user_nl_datm.user_nl doesn't exist. There is only a diff file with a similar name. So I've done the changes manually. Also, I am running with the CRU dataset instead of QIAN, I had to change that part as well.Yet, when I try to build the model, I get the following error:-------------------------------------------------------------------------
 CESM BUILDNML SCRIPT STARTING
 - To prestage restarts, untar a restart.tar file into /scratch/rosa/bozbiyik/cesm1.0/I20CRUCLM45CN4Me_f19_g16-transient/run
 infile is /project/s428/bozbiyik/clm4_0_81/scripts/I20CRUCLM45CN4Me_f19_g16-transient/Buildconf/cplconf/cesm_namelist
ERROR(Build::Namelist::_parse_next): expect a equal '=' sign instead got: '
ERROR: datm.buildnml.csh failed
ERROR from preview namelist - EXITING

Thanks for the help!
Anil
 

erik

Erik Kluzek
CSEG and Liaisons
Staff member
Hi Anil Hmmm. It's getting a parsing error in reading the datm namelist. I don't see an error in the namelist in the UG. But, you had to modify yours for CRUNCEP. Give us the namelist and maybe I can spot a syntax error. The main suggestion I have is to look over the user_nl_datm file carefully, and see what might be wrong. Anyway, show us the file and I'll see if I can spot the error. Good luck Erik
 
I encountered the same error when trying to set up a CLM4.5 offline simulation following these instructions: http://www.cesm.ucar.edu/models/cesm1.2/clm/models/lnd/clm/doc/UsersGuide/x12702.htmlIt looks like there is a typo in the file addco2_user_nl_datm.user_nl. Both the file and the webpage include the following linemapmask = 'nomask','nomask','nomask','nomask',nomask'while I guess this should bemapmask = 'nomask','nomask','nomask','nomask','nomask'(i.e. a single quote needs to be added right before the last nomask entry). After applying this correction CESM compiles smoothly in my case. Best wishes,Wim 
 
Top