sukanta1003@gmail_com
New Member
Hello everyone,
Myself, Sukanta recently started working in “Climate Change Studies using Coupled Models”.
we have installed CCSM3 (Community Climate System Model) successfully on the SGI Linux-Altrix i64 server, which has maximum 32 duel core processors. We are able to run all the three types of run viz. startup, branch and hybrid with default component set (i.e. B == cam, clm, pop, csim, cpl) and resolutions T42_gx1v3 as well as T85_gx1v3. All these test runs create the monthly history files for each component with the restart files as well.
But we are facing some problems (listed below) when trying to change the history file option for the atmospheric component CAM. The model completes the run without any error massage but the changes are not reflected correctly in the history files. It is creating only default history tapes. Also for some name-list configurations, we have received error massages.
1. Not creating the secondary History File for CAM:
From the literature, we came to know that for the component model ‘CAM’, we can create maximum 6 types of history files, the first one is default monthly or daily primary history file. The files 2 to 6 are additional history files that may contain same or different fields as compared with the first history file with different time-steps and different time-samples. Some important name-list variables for creating additional history files are NHTFRQ(6), MFILT(6), NDENS(6), FINCL1-6 and FIXCL1-6.
We have tried to save a primary monthly history file (the naming convention is *.h0.*) and a secondary daily history file (the naming convention is *.h1.*) with specific field variables. The following are the details to set up the T42_gx1v3 startup run with fully active model components:
env_conf:
RUNTYPE: startup
COMPONENT SET: B (cam, clm, pop, csim, cpl)
CSIM_MODE: prognostic
GRID: T42_gx1v3
env_run:
RESUBMIT: 0
CONTINUE_RUN: FALSE
STOP_OPTION: nmonths
STOP_N: 12
Buildnml_Prestage/cam.buildnml_prestage.csh:
cat >! atm.stdin
Myself, Sukanta recently started working in “Climate Change Studies using Coupled Models”.
we have installed CCSM3 (Community Climate System Model) successfully on the SGI Linux-Altrix i64 server, which has maximum 32 duel core processors. We are able to run all the three types of run viz. startup, branch and hybrid with default component set (i.e. B == cam, clm, pop, csim, cpl) and resolutions T42_gx1v3 as well as T85_gx1v3. All these test runs create the monthly history files for each component with the restart files as well.
But we are facing some problems (listed below) when trying to change the history file option for the atmospheric component CAM. The model completes the run without any error massage but the changes are not reflected correctly in the history files. It is creating only default history tapes. Also for some name-list configurations, we have received error massages.
1. Not creating the secondary History File for CAM:
From the literature, we came to know that for the component model ‘CAM’, we can create maximum 6 types of history files, the first one is default monthly or daily primary history file. The files 2 to 6 are additional history files that may contain same or different fields as compared with the first history file with different time-steps and different time-samples. Some important name-list variables for creating additional history files are NHTFRQ(6), MFILT(6), NDENS(6), FINCL1-6 and FIXCL1-6.
We have tried to save a primary monthly history file (the naming convention is *.h0.*) and a secondary daily history file (the naming convention is *.h1.*) with specific field variables. The following are the details to set up the T42_gx1v3 startup run with fully active model components:
env_conf:
RUNTYPE: startup
COMPONENT SET: B (cam, clm, pop, csim, cpl)
CSIM_MODE: prognostic
GRID: T42_gx1v3
env_run:
RESUBMIT: 0
CONTINUE_RUN: FALSE
STOP_OPTION: nmonths
STOP_N: 12
Buildnml_Prestage/cam.buildnml_prestage.csh:
cat >! atm.stdin