LAM in climate mode

Things you need to know when running LAM in climate mode:

The entry always runs on the machine from which the run got launched. Although the model will run on 'BACKEND_mach'.

The main *.Abs for the launching machine (entry) and 'BACKEND_mach' (entry and model) must be on the launching machine.

Pilot information files must be on the launching machine and have the name 'nest_info_${exp}_part#.ca', where #=1, 2 , etc.

Variables needed to run LAM in climate mode:

Variables which only need to be considered or set properly when running in climate mode are written in red. Variables which will get set automatically in climate mode are written in blue.

'configexp.dot.cfg':

CLIMAT_nest_exp:	Name of the first experiment from which the pilot information files will be used, i.e. pilot01_197801. 'CLIMAT_nest_exp' must contain a name and the year and month in the form: name_YYYYMM. Year and month are updated automatically.
CLIMAT_nest_rept:	Machine name and directory path with pilot information files specified by 'CLIMAT_nest_exp'. The machine name is optional. Syntax: CLIMAT_nest_rept="machine:path";
UM_EXEC_inrep:	Working directory path for the entry on the launching machine. The pilot information files will be unpacked there and the bm-files will be created in a subdirectory .

'gemclim_settings.nml':

namelist: gement
Mod_runstrt_S:	Start date of the whole run. Format: YYYYMMDD.HHMMSS. Is set automatically.
Pil_jobstrt_S:	Start date of the job/month. Format: YYYYMMDD.HHMMSS. Is updated automatically.
Pil_jobend_S:	End date of the job/month. Format: YYYYMMDD.HHMMSS. Is updated automatically.
Pil_nesdt:	Time interval between two nesting information files in seconds. The default is 10800.
Pil_bmf_L=.true.	BMF files will be used
Pil_bcs_hollow_L=.false.	To get full files
Pil_allin1_L=.true.	To get only 1 global "pilot" file instead of one per tile. Default .true.
Pil_sfc2d_L:	Will automatically be set to .true. for first job and then to .false.
Pil_maxclf:	'Pil_maxclf + 5' will be the number of points in pilot region. The minimum is 6 points for the pilot region. Default: Pil_maxclf = 1
Pil_hblen:	Number of points in blending area. Default 10.
namelist: gem_cfgs
Lam_toptt_L:	If set to .true. the top level temperature is completely specified from nesting information. When using 'newrad' it is highly recommended to set Lam_toptt_L= .true. When using 'cccmarad' it is not that necessary. The default is .true.
Lam_0ptend_L:	If set to .true. the physics tendencies will be zeroed out in the blending area. If using pilot files created by GEMCLIM set Lam_0ptend_L = .false., otherwise set Lam_0ptend_L = .true. The default is .true.
Lam_nesdt:	Time interval between two nesting information files in seconds. The default is 10800.
Step_maxcfl:	'Step_maxcfl + 5' will be the number of points in pilot region. Default: Step_maxcfl = 1
Hblen_[xy]:	Number of points in blending area. Default 10.

Author: Katja Winger
Last update: January 2010