!
! OPA MODEL specific namelist for LOBSTER1 model (#ifdef key_trc_lobster1)
! ---------
!
!       NATBIO   biological parameters
!
! PHYTOPLANKTON
!  apmin     fixed phytoplancton concentration, mmol/m3
!  tmumax    maximal phytoplankton growth rate, 2.00/86400 s-1 = 2.314815e-5,
!  rgamma    phytoplankton exudation fraction, %
!  fphylab   NH4 fraction of phytoplankton exsudation
!  tmmaxp    maximal phytoplancton mortality rate, 0.
!  tmminp    minimal phytoplancton mortality rate, 0.05/86400 s-1 = 20 jours
!  rcchl     Carbone/Chlorophyl ratio, 60 mgC.mgChla-1
!  aki       light photosynthesis half saturation constant 6.18 W/m2
!  toptp     optimal photosynthesis temperature
!
! NUTRIENTS
!  anmin  minimum nutrients concentration, mmol/m3
!  akno3  nitrate limitation half-saturation value, mmol/m3
!  aknh4  ammonium limitation half-saturation value, mmol/m3
!  taunn  nitrification rate, s-1
!  psinut inhibition of nitrate uptake by ammonium
!
! ZOOPLANKTON
!  azmin  minimum zooplancton concentration, mmol/m3
!  eggzoo minimum for zooplankton concentration, mmolN.m-3, egg effect
!  rgz    ivlev coeff for zoo mortality 
!  rppz   zooplankton nominal preference for phytoplancton food, %
!  taus   specific zooplankton maximal grazing rate, s-1
!         0.75/86400 s-1=8.680555E-6    1/86400 = 1.15e-5
!  aks    half-saturation constant for total zooplankton grazing,
!         mmolN.m-3
!  rpnaz  non-assimilated phytoplankton by zooplancton, %
!  rdnaz  non-assimilated detritus by zooplankton, %
!  tauzn  zooplancton specific excretion rate, 0.1/86400 s-1 = 10 jours
!  fzoolab NH4 fraction of zooplankton excretion
!  fdbod  zooplankton mortality fraction that goes to detritus
!  tmmaxz maximal zooplankton mortality rate
!  tmminz minimal zooplankton mortality rate,  1 (mmolN/m3)-1 d-1
!
! DETRITUS
!  admin    minimum detritus concentration, mmol/m3
!  taudn    detritus breakdown rate, 0.1/86400 s-1 = 10 jours
!  fdetlab  NH4 fraction of detritus dissolution
!  vsed     detritus sedimentation speed, m/s
!
! DOM
!  taudomn DOM breakdown rate, s-1
!          slow remineralization rate of semi-labile dom to nh4 (1 month)
!
! DIC, ALK
!  rhocaco3 rain ratio organic carbon vs caco3
!
! COEF FOR FLUXES FROM THE APHOTIC LAYER TO THE SEDIMENTS
!  sedlam     : time coefficient of POC remineralization in sediments, s-1
!  sedlostpoc : mass of POC lost in sediments
!  sedcallam  : time coefficient of CaCO3 remineralization in sediments
!  sedlostcal : mass of CaCO3 lost in sediments
!
! GENERAL COEFFICIENTS
!  redf     redfield ratio (C:N) for phyto
!  reddom   redfield ratio (C:N) for DOM
!  redfoxy  redfield ratio (O:N)
!  slopet   van t Hoff "coefficient"          
!  tmaxr    maximal damping coeff under euphotic layer, 0.
!  tminr    minimal damping coeff under euphotic layer
!  xhr      coeff for martin''s remineralisation profile
!  xhrc     coeff for martin''s remineralisation profile for CaCO3
!
! COEF USED ?
!  xzki      = 1. ki varies with depth, =0. ki = cte = aki
!  filmax
!  toptgz
!  tmaxgz
!  anumin
!  afdmin
!   rhocaco3 = 0.1
!   sedcallam = 0.
!   sedlostcal = 0.
!   redfoxy = 10.75,
!   xhrc  = -0.1,
! avant 21-10-2005:
!   reddom = 12.
!
&natbio
   apmin = 0.,
   tmumax= 1.21e-5
   rgamma= 0.05
   fphylab = 0.75
   tmmaxp= 0.0
   tmminp= 5.8e-7
   rcchl = 60.
   aki   = 33.
   toptp = 0.

   anmin = 0.
   akno3 = 0.7
   aknh4 = 0.001
   taunn = 5.80e-7
   psinut = 3.

   azmin = 0.
   eggzoo= 0.0
   rgz   = 0.
   rppz  = 0.8
   taus  = 9.26E-6
   aks   = 1.
   rpnaz = 0.3
   rdnaz = 0.3
   tauzn = 8.1e-7
   fzoolab = 0.5
   fdbod = 0.5
   tmmaxz= 0.
   tmminz= 2.31e-6

   admin = 0.
   taudn = 5.80e-7
   fdetlab = 0.
   vsed  = 3.47e-5

   taudomn = 6.43e-8

   sedlam = 3.86e-7
   sedlostpoc = 0.

   redf  = 6.56
   reddom = 6.56
   slopet = 0.
   tmaxr = 0.
   tminr = 5.80e-7
   xhr   = -0.858

   filmax= 0.
   toptgz= 0.
   tmaxgz= 0.
   anumin= 0.
   afdmin= 0.
/
!
!       NATOPT   optical parameters
!
!  xkg0  green absorption coefficient of water
!  xkr0  red absorption coefficent of water
!  xkgp  green absorption coefficient of chl
!  xkrp  red absorption coefficient of chl
!  xlg   green chl exposant for absorption
!  xlr   red chl exposant for absorption
!  rpig  chla/chla+pheo ratio
!
&natopt
   xkg0  = 0.0232
   xkr0  = 0.225
   xkgp  = 0.074
   xkrp  = 0.037
   xlg   = 0.674
   xlr   = 0.629
   rpig  = 0.7
/
!
!       NATDBI   biological diagnostics trends (#ifdef key_trc_diabio)
!
!  nwritebio : time step frequency for biological outputs (48 : 1/jour)
!  ctrbio short title (max 8 characters) for biological trends
!  ctrbil long title (max 80 characters) for biological trends
!  ctrbiu unit for biological trends
!
 &NATDBI
   nwritebio =  36
   ctrbio(1) = 'FNO3PHY'
   ctrbio(2) = 'FNH4PHY'
   ctrbio(3) = 'FPHYZOO'
   ctrbil(1) = 'New primary production'
   ctrbil(2) = 'Regenerated primary production'
   ctrbil(3) = 'Grazing'
   ctrbiu(1) = 'mmole/m3/s'
   ctrbiu(2) = 'mmole/m3/s'
   ctrbiu(3) = 'mmole/m3/s'
 &END
!
! &NATGAS
!   gasfac = 1.7, 
!   igaswind = 2
!   icice = 2 
! &END