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How to run CESM1.1 from a CESM1.0 restart (creating an RTM restart file)

M

mmills@ucar_edu

Member
CESM1.1 adds a new component, the River Transport Model (RTM), which was formerly part of the Community Land Model (CLM). When starting CESM1.1 from a restart directory created by a CESM1.0 run, the model will expect to find a restart file for RTM, which CESM1.0 does not produce. Therefore, before starting the CESM1.1 run, you will need to create the RTM restart by simply copying the CLM restart file whose name matches *.clm2.r.*.nc into a new file with "rtm" replacing "clm2" in the filename, i.e.:


Code: 
cp b40.rcp4_5.2deg.wcm.001.clm2.r.2019-01-01-00000.nc b40.rcp4_5.2deg.wcm.001.rtm.r.2019-01-01-00000.nc


The CESM1.1 run will read the RTM restart information, which was previously included in the CLM restart file, from the new RTM restart file you have created.
 
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