Namelist NAM_OBS

Specific namelist for the observations in EKF.
For the moment, 5 types of observation are possible: "T2M", "HU2M", "WG1", "LAI" and "SWE".

Fortran name Fortran type values default value
NOBSTYPE integer ≤5 2
CFILE_FORMAT_OBS character "FA ", "ASCII" "FA "
LOBSNAT logical F
COBS_M character(LEN=10)(5) "T2M ","HU2M","WG2 ","LAI ","SWE "
XERROBS_M real(5) 1.0, 0.1, 0.4,0.2,0.1
NNCO integer(5) 1, 1, 0,0,0

  • NOBSTYPE : number of different observed variables.
  • LOBSHEADER: is there a header in the observation file
  • CFILE_FORMAT_OBS: Format of the observations file ASCII/FA
  • LOBSNAT: if observations and assimilation are defined only on nature tile
  • COBS_M : COBS_M: array containing the names of the fields for observations, in case of data assimilation.
  • XERROBS_M : observation error for each type.
  • NNCO : selects the type of observations to be assimilated: 1 assimilated, 0: not assimilated. Index 1 corresponds to T2M, index 2 to HU2M, index 3 to WG1, index 4 to LAI, index 5 to SWE.