Ajout d'une routine et d'un fichier namelist pour le nouveau modele biologique...

Ajout d'une routine et d'un fichier namelist pour le nouveau modele biologique bio_ismer. Celui-ci est une version modifiee de Fasham auquel on a ajoute une classe de phyto et une classe de zoo supplementaires. Un terme de nitrification a ete ajoute. Les parametres par defaut devront etre ajustes.

nml/bio_ismer.nml

+#$Id$
+!-------------------------------------------------------------------------------
+! Fasham et al. biological model with modifications by Kuehn and Radach
+! 
+!  numc=        number of compartments for geobiochemical model
+!
+!  p1_initial= initial flagellate concentration                  [mmol n/m3]
+!  p2_initial= initial diatom concentration                  [mmol n/m3]
+!  z1_initial= initial micro-zooplakton concentration                     [mmol n/m3] 
+!  z2_initial= initial meso-zooplakton concentration                     [mmol n/m3] 
+!  b_initial= initial bacteria concentration                       [mmol n/m3]
+!  d_initial= initial detritus concentration                       [mmol n/m3]
+!  n_initial= *** see obs.nml ***                                  [mmol n/m3]
+!  a_initial= *** see obs.nml ***                                  [mmol n/m3]
+!  l_initial= initial LDON concentration                           [mmol n/m3]
+!  p0       = minimum phytoplankton concentration                  [mmol n/m3]
+!  z0       = minimum zooplakton concentration                     [mmol n/m3]
+!  b0       = minimum bacteria concentration                       [mmol n/m3]
+!  theta    = phytoplancton buoyancy parameter                     [m3 day/(mmol N)]	!CHG2
+!  vp1       = maximum flagellate uptake rate by flagellates       [1/day] 
+!  vp2       = maximum diatom uptake rate by diatoms               [1/day] 
+!  alpha1    = slope of the flagellate PI-curve                    [m2/(W day)] 
+!  alpha2    = slope of the diatom PI-curve                        [m2/(W day)] 
+!  inib1     = inhibition slope of the flagellate PI-curve (pos.)  [m2/(W day)] 	!CHG1
+!  inib2     = inhibition slope of the PI-curve (pos.)             [m2/(W day)] 	!CHG1
+!  kn1       = half sat. constant nitrate uptake by fla            [mmol n/m3]
+!  ka1       = half sat. constant ammonium uptake by fla           [mmol n/m3]
+!  kn2       = half sat. constant nitrate uptake by diatoms        [mmol n/m3]
+!  ka2       = half sat. constant ammonium uptake by diatoms       [mmol n/m3]
+!  mu1      = phytoplankton (fla & dia)  mortality rate            [1/day] 
+!  k5       = half sat. constant phy. mortality (fla & dia)        [mmol n/m3]
+!  gamma    = exudation fraction                                   [-]
+!  w_p1     = flagellate settling velocity                         [m/day]
+!  w_p2     = diatom settling velocity                             [m/day]
+!  g1max     = maximum microzooplankton ingestion rate             [1/day]
+!  g2max     = maximum mesozooplankton ingestion rate              [1/day]
+!  k3       = half saturation constant ingestion                   [mmol n/m3]
+!  beta     = grazing efficiency                                   [-]
+!  mu2      = maximum zooplankton loss rate (mcz & msz)            [1/day]
+!  k6       = half saturation zooplankton loss (mcz & msz)         [mmol n/m3]
+!  delta    = fractional zooplankton loss to LDON (mcz & msz)      [-]
+!  epsi     = fractional zooplankton loss to ammonium (mcz & msz)  [-]
+!  r11      = mcz grazing preference on flagellates                [-]
+!  r12      = mcz grazing preference on bacteria                   [-] 
+!  r13      = mcz grazing preference on detritus                   [-] 
+!  r21      = msz grazing preference on flagellates                [-]
+!  r22      = msz grazing preference on diatoms                    [-] 
+!  r23      = msz grazing preference on detritus                   [-] 
+!  vb       = maximum bacterial uptake rate                        [1/day]
+!  k4       = half saturation bacterial uptake                     [mmol n/m3]
+!  mu3      = bacteria excretion rate                              [1/day]  
+!  eta      = uptake ratio ammonium:LDON                           [-]  
+!  mu4      = detritus breakdown rate                              [1/day] 
+!  mu5      = nitrification rate                                   [1/day] 
+!  w_d      = detritus settling velocity                           [m/day]
+!  kc       = attenuation constant for the self shading effect     [m**2/mmol N]
+!-------------------------------------------------------------------------------
+ &bio_ismer_nml
+  numc=      9
+  p1_initial= 0.012
+  p2_initial= 0.012
+  z1_initial= 0.012
+  z2_initial= 0.012
+  b_initial= 0.001
+  d_initial= 0.01
+  l_initial= 0.1
+  p0=        0.0001
+  z0=        0.0001
+  b0=        0.0001
+  vp1=       0.3
+  vp2=       0.3
+  alpha1=    0.04
+  alpha2=    0.04
+  inib1=     0.06
+  inib2=     0.06
+  kn1=       1.0
+  ka1=       0.8
+  kn2=       1.0
+  ka2=       0.8
+  mu1=       0.05
+  k5=        0.2
+  gamma=     0.05
+  w_p1=     -0.38
+  w_p2=     -0.10
+  theta=     0.0
+  w_p1min=  -0.06
+  w_p1max=  -0.38
+  w_p2min=  -0.06
+  w_p2max=  -0.38
+  g1max=     1.0
+  g2max=     1.0
+  k3=        1.0
+  beta=      0.625
+  mu2=       0.3
+  k6=        0.2
+  delta=     0.1
+  epsi=      0.70
+  r11=       0.55
+  r12=       0.4
+  r13=       0.05
+  r21=       0.55
+  r22=       0.4
+  r23=       0.05
+  vb=        0.24
+  k4=        0.5
+  mu3=       0.03
+  eta=       0.0
+  mu4=       0.02
+  mu5=       0.00
+  w_d=       -5.0
+  kc=        0.03
+ /