source: trunk/LMDZ.VENUS/deftank/gcm-96x96x90-chemistry.def @ 2465

## $Header$
#
## Planet:
planet_type=venus
# 
## Number of dynamical steps per day (must be a multiple of iperiod)      
day_step=480000
## Apply a Matsuno step every iperiod dynamical step
iperiod=5
## dissipation is applied every dissip_period dynamical steps
## DEFAULT: dissip_period=0 , meaning dissip_period is automatically computed
## (in practice it is =>25 in recent runs)
dissip_period=5
## dissipation operator to use (star or non-star)
lstardis=y
## iterate lateral dissipation operator gradiv nitergdiv times 
nitergdiv=1
## iterate lateral dissipation operator nxgradrot nitergrot times
nitergrot=2
## iterate lateral dissipation operator divgrad niterh times             
niterh=2
## dissipation time scale (s) for shortest wavelengths for u,v (gradiv)  
tetagdiv=3000
## dissipation time scale (s) for shortest wavelengths for u,v (nxgradrot)
tetagrot=4000
## dissipation time scale (s) for shortest wavelengths for u,v (divgrad) 
tetatemp=4000
## coefficient for gamdissip                                            
coefdis=0.
## time marching scheme (Matsuno if purmats is y, else Matsuno-Leapfrog)
purmats=n
# run with (true) or without (false) physics
physic=y
## Physics package type
## 0: no physics (e.g. Shallow Water mode)
## 1: with physics (e.g. phyvenus physics package)
## 2: with a netwonian relaxation scheme in the dynamics                                         
iflag_phys=1
## run with or without initial condition files (start.nc, startphy.nc) ?
## (in the without case, initialization of fields is done via the iniacademic
## routine in the dynamics => not available for Venus
read_start=y
## call physics every iphysiq dynamical steps                                   
iphysiq=10
## runwith or without tracers                                                 
iflag_trac=0
## run with or without stratosphere // i.e. a sponge layer and secondary
## higher altitude level of horizontal dissipation
ok_strato=y
## Horizontal dissipation multipliers along the vertical
dissip_fac_mid=2.
dissip_fac_up=30.
# deltaz et hdelta in km
dissip_deltaz=20.
dissip_hdelta=10.
# pupstart in Pa
dissip_pupstart=1.

## Sponge layer
#   0: LMDZ.GENERIC style
# 1 and 2: LMDZ.EARTH style 
#   1: in last 4 levels
#   2: in levels with pressure less than 100 times the last layer pressure
iflag_top_bound=0

## sponge layer parameters LMDZ.EARTH style
## Mode 
#   mode = 0 : no sponge
#   mode = 1 : u et v -> 0
#   mode = 2 : u et v -> zonal average
#   mode = 3 : u, v et h -> zonale average
mode_top_bound=3
#  Coefficient for the sponge layer (value in topmost layer)
tau_top_bound=1.e-4

# sponge layer parameters LMDZ.GENERIC style
callsponge=y
# mode_sponge ( 0: h -> h_mean , ucov -> 0 , vcov -> 0
#               1: h -> h_mean , ucov -> ucov_mean , vcov -> 0
#               2: h -> h_mean , ucov -> ucov_mean , vcov -> vcov_mean )
mode_sponge=2
# nsponge: number of topmost atmospheric layers over which extends the sponge
nsponge=10
# tetasponge characteristic time scale (seconds) at topmost layer
#            (time scale then doubles with decreasing layer index)
tetasponge=1.e4 

###############################################
### Zoom parameters
###############################################
## longitude (degrees) of zoom center                              
clon=0.
## latitude (degrees) of zoom center                              
clat=0.
## enhancement factor of zoom, along longitudes                     
grossismx=1.0
## enhancement factor of zoom, along latitudes                      
grossismy=1.0
##  Use an hyperbolic function f(y) if .true., else use a sine      
fxyhypb=y
## extention along longitudes of zoom region (fraction of global domain)
dzoomx=0.0
## extention along latitudes of zoom region (fraction of global domain)
dzoomy=0.0
## zoom stiffness along longitudes
taux=3.
## zoom stiffness along latitudes
tauy=3.
##  Fonction  f(y) as y = Sin(latitude) if = .true. ,  else  y = latitude
ysinus=y