10.4.2.2.5 Namelist NAM_VAR

Specific namelist for the control variables for EKF.

Fortran name Fortran type values default value
NIVAR integer 1
NVAR integer ≤5 4
CVAR_M character(len=5) "WG2", "WG1", "TG2", "TG1" ,"LAI"
CREPFIX_M character(len=100)(5) ""
XSIGMA_M real(5) 0.15, 0.1, 2.0, 2.0,0.2
XTPRT_M real(5) 0.0001, 0.0001, 0.0001, 0.0001, 0.001
NNCV integer(5) 1, 1, 1, 1, 1
XSCALE_Q real 0.125
XSCALE_QLAI real 0.5
CBIO character(12) "BIOMA1", "BIOMASS1", "BIOMA2", "BIOMASS2", "RESPI1", "RESP_BIOM1", "RESPI2", "RESP_BIOM2", "LAI" "BIOMA1"
CPREFIX_BIO character(100) ""
XALPH real(12) 0., 0., 0., 0.08203445, 0.07496252, 0.06846970, 0.06771856, 0.09744689, 0.09744689, 0.07164350, 0.17686594, 0.07164350

  • NIVAR : number of the variable to be perturbed at reading in input PREP file.
  • NVAR : number of control variables.
  • CVAR_M : names of control variables.
  • CPREFIX_M : The prefix of the control variables (in PREP.txt file). Used only with VARASSIM.
  • XSIGMA_M : covariances of background errors if B is fixed.
  • XTPRT_M : The perturbation amplitudes.
  • NNCV : selects the control variables to be used: if 1, used, if 0, not used.
  • XSCALE_Q : scaling factor of Q matrix w.r.t. the initial B.
  • XSCALE_QLAI : scaling factor of Q matrix w.r.t. the initial B, for LAI variable.
  • CBIO : Name of Biomass variable
  • CPREFIX_BIO : The prefix of the Biomass variable Used only in VARASSIM, useless in SODA/EKF.
  • XALPH : coefficient for BIO_PASS, by patch.