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Advanced configuration of NorESM2

Creating a compset

~/noresm/scripts/ccsm_utils/Case.template/config_compsets.xml

Under “<!– F compsets –>”, add

  <COMPSET sname="F_AMIP_CAM5-OSLO"     alias="FAMIPOSLO"  >AMIP_CAM5%OSLO_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV</COMPSET>

Setting up a case with the new compset and building the model

It should now be possible to create a new case directory, which we here name FAMIPOSLOtst and configure with 1 degree horizontal atmospheric resolution;

./create_newcase -case ../cases/FAMIPOSLOtst -compset FAMIPOSLO -mach hexagon -res f09_f09

and finally set up and compile the model:

cd ../cases/FAMIPOSLOtst ./cesm_setup ./FAMIPOSLOtst.build

Why does it work??

In NorESM there are 3 new config-options for CAM:

-cam-oslo aerlife (turns on transport of oslo tracers)
-cam-oslo dirind (turns on interaction with radiation)
-cam-oslo warmclouds (turns on interaction with warm clouds)

They change number of tracers and turn on different preprocessor flags in in a script

models/atm/cam/bld/configure

To understand the implementation do:

svn diff -r 202 models/atm/cam/bld/configure

The options also need to be defined, see

models/atm/cam/bld/config_files/definition.xml

To see how the options were added, do:

svn diff -r 202 models/atm/cam/bld/config_files/definition.xml