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--- noresm:runmodel:advancednoresm2 [2014-03-05 14:13:34]
alfg [Why does it work to change config_compsets.xml ?]
+++ noresm:runmodel:advancednoresm2 [2022-05-31 09:29:32] (current)
@@ Line 1: / Line 1: @@
 ====== Advanced configuration of NorESM2 ======
+**NOTE THAT THE COMPSETS MENTIONED IN THIS EXAMPLE ARE NO LONGER MAINTAINED! THE GENERAL EXPLANATION AND IDEAS ARE STILL VALID!
+**
 ===== Creating a new compset =====
@@ Line 88: / Line 90: @@
+===== Configure nudging =====
+==== Create the met-data ====
+First run the model to produce 6 hourly data. The following namelists are needed:
+<file>
+user_nl_cam
+&camexp
+mfilt           = 1,  4,
+nhtfrq          = 0,  -6,
+avgflag_pertape ='A','I',
+fincl2          = 'PS','U','V','TAUX','TAUY','FSDS','TS','T','Q','PHIS','QFLX','SHFLX'
+</file>
+<file>
+user_nl_clm
+&clmexp
+hist_mfilt             = 1,4
+hist_nhtfrq            = 0,-6
+hist_avgflag_pertape   = 'A','I'
+hist_fincl2            = 'SNOWDP','H2OSNO','H2OSOI'
+</file>
+==== Use the met-data in another run ====
+First create a compset which has the configure-option "-offline_dyn".  Check in config_compsets.xml which compsets have this configure-option added. See for example the compset NFAMIPNUDGEPTAERO in https://svn.met.no/NorESM/noresm/branches/featureCAM5-OsloDevelopment_trunk2.0-1/noresm/scripts/ccsm_utils/Case.template/config_compsets.xml
+Then use this compset to create a case. You need the following user-input (for example in your user_nl_cam)
+<file>
+&metdata_nl
+met_data_file='/work/shared/noresm/inputForNudging/FAMIPC5NudgeOut/atm/hist/FAMIPC5NudgeOut.cam.h1.1979-01-01-00000.nc'
+met_filenames_list = '/work/shared/noresm/inputForNudging/FAMIPC5NudgeOut/atm/hist/fileList.txt'
+</file>
+This info can be added directly in a use_case which you associate with the compset created (see e.g. 2000_cam5_oslonudge.xml)
+where met_data_file is the first met-data file to read, and met_filenames_list is a list of the following met-data. The first lines of the file should look something like this (guess what the rest of the file should look like? 8-o: )
+<file>
+/work/shared/noresm/inputForNudging/FAMIPC5NudgeOut/atm/hist/FAMIPC5NudgeOut.cam.h1.1979-01-01-00000.nc
+/work/shared/noresm/inputForNudging/FAMIPC5NudgeOut/atm/hist/FAMIPC5NudgeOut.cam.h1.1979-01-02-00000.nc
+/work/shared/noresm/inputForNudging/FAMIPC5NudgeOut/atm/hist/FAMIPC5NudgeOut.cam.h1.1979-01-03-00000.nc
+</file>
+This file can be created at the place where you put the metdata with this command:
+<file>
+alfgr@hexagon-4:/work/shared/noresm/inputForNudging/FAMIPC5NudgeOut/atm/hist> ls -d -1 $PWD/*.h1.*.nc > fileList.txt
+</file>
+==== Namelist options ====
+When looking at aerosol indirect effects, it's recommended to nudge only U, V and PS:
+<file>
+&metdata_nl
+ met_nudge_only_uvps = .true.
+</file>
+Choose relaxation time (hours). Use the same time as dt in met_data_file:
+<file>
+&metdata_nl
+ met_rlx_time = 6
+</file>
+==== Nudge to ERA-interim reanalysis ====
+Link to ERA-interim metdata instead of model produced metdata. Remember to choose the files corresponding to your resolution (examples below are for f09_f09 and 32 levels in the vertical):
+<file>
+&metdata_nl
+ met_data_file = '/work/shared/noresm/inputdata/noresm-only/inputForNudging/ERA_f09f09_30L_days/2001-01-01.nc'
+ met_filenames_list = '/work/shared/noresm/inputdata/noresm-only/inputForNudging/ERA_f09f09_30L_days/fileList2001-2015.txt'
+</file>
+Add also the ERA-topography (no matter which fields you are nudging):
+<file>
+&cam_inparm
+ bnd_topo = '/work/shared/noresm/inputdata/noresm-only/inputForNudging/ERA_f09f09_30L_days/ERA_bnd_topo.nc'
+</file>