6. The JULES namelist files

Each run of JULES is controlled by a number of files containing Fortran namelists. These files specify details including:

• Switches to allow different model configurations to be selected at run-time.
• Start and end times for the run.
• What input data to use and how to read it.
• How to construct the model grid.
• Values for various parameters.
• The required output.

These files have specific names, and JULES expects all these files to exist for every run (even when their contents are not required).

• 6.1. Introduction to Fortran namelists
• 6.2. jules_surface_types.nml
  • 6.2.1. JULES_SURFACE_TYPES namelist members
• 6.3. jules_surface.nml
  • 6.3.1. JULES_SURFACE namelist members
• 6.4. jules_radiation.nml
  • 6.4.1. JULES_RADIATION namelist members
• 6.5. jules_hydrology.nml
  • 6.5.1. JULES_HYDROLOGY namelist members
• 6.6. jules_soil.nml
  • 6.6.1. JULES_SOIL namelist members
• 6.7. jules_vegetation.nml
  • 6.7.1. JULES_VEGETATION namelist members
• 6.8. jules_snow.nml
  • 6.8.1. JULES_SNOW namelist members
  • 6.8.2. Example of the evolution of snow layer thickness
• 6.9. jules_rivers.nml
  • 6.9.1. JULES_RIVERS namelist members
• 6.10. timesteps.nml
  • 6.10.1. JULES_TIME namelist members
  • 6.10.2. JULES_SPINUP namelist members
  • 6.10.3. Note on time conventions
  • 6.10.4. Note on solar zenith angle
  • 6.10.5. Examples
  • 6.10.6. Notes on spin-up
• 6.11. model_grid.nml
  • 6.11.1. JULES_INPUT_GRID namelist members
  • 6.11.2. JULES_LATLON namelist members
  • 6.11.3. JULES_LAND_FRAC namelist members
  • 6.11.4. JULES_MODEL_GRID namelist members
  • 6.11.5. JULES_SURF_HGT namelist members
  • 6.11.6. Examples
• 6.12. ancillaries.nml
  • 6.12.1. JULES_FRAC namelist members
  • 6.12.2. JULES_SOIL_PROPS namelist members
  • 6.12.3. JULES_TOP namelist members
  • 6.12.4. JULES_AGRIC namelist members
  • 6.12.5. JULES_CROP_PROPS namelist members
  • 6.12.6. JULES_CO2 namelist members
  • 6.12.7. JULES_IRRIG namelist members
  • 6.12.8. JULES_RIVERS_PROPS namelist members
• 6.13. pft_params.nml
  • 6.13.1. JULES_PFTPARM namelist members
• 6.14. nveg_params.nml
  • 6.14.1. JULES_NVEGPARM namelist members
• 6.15. crop_params.nml
  • 6.15.1. JULES_CROPPARM namelist members
• 6.16. triffid_params.nml
  • 6.16.1. JULES_TRIFFID namelist members
• 6.17. urban.nml
  • 6.17.1. URBAN_SWITCHES namelist members
  • 6.17.2. URBAN2T_PARAM namelist members
  • 6.17.3. URBAN_PROPERTIES namelist members
• 6.18. fire.nml
  • 6.18.1. FIRE_SWITCHES namelist members
• 6.19. drive.nml
  • 6.19.1. JULES_DRIVE namelist members
  • 6.19.2. Examples of specifying driving data
• 6.20. imogen.nml
  • 6.20.1. IMOGEN_RUN_LIST namelist members
  • 6.20.2. IMOGEN_ANLG_VALS_LIST namelist members
• 6.21. prescribed_data.nml
  • 6.21.1. JULES_PRESCRIBED namelist members
  • 6.21.2. JULES_PRESCRIBED_DATASET namelist members
• 6.22. initial_conditions.nml
  • 6.22.1. JULES_INITIAL namelist members
  • 6.22.2. Examples of specification of initial state
• 6.23. output.nml
  • 6.23.1. JULES_OUTPUT namelist members
  • 6.23.2. JULES_OUTPUT_PROFILE namelist members
  • 6.23.3. Example of requesting output