3 Simulation

The following scripts are provided by the author for running CESM with the urban traffic functionality.

Modify job script

• urban_traffic: If true, calculating urban traffic heat flux.

  • stream_fldFileName_vehicletv: Filename of input stream data for time varying urban traffic

  • stream_meshfile_vehicletv: Mesh filename of input stream data for time varying urban traffic

  • stream_year_first_vehicletv: First year to loop over for urban time varying traffic data

  • stream_year_last_vehicletv: Last year to loop over for urban time varying traffic data

  • model_year_align_vehicletv: Simulation year that aligns with stream_year_first_vehicletv value

  • vehicletvmapalgo: Mapping method from urban time varying traffic file to the model resolution.

    • Note that the mapping method has been updated in the new CTSM versions. Please refer to ERROR: map algo copy is not supported

• Define the urban traffic stream input. Please refer to the last section 2 Surface Input.

  # For example
  echo "urban_traffic = .true.">> user_nl_clm
  echo "fsurdat='${SURF}'" >> user_nl_clm
  echo "stream_fldFileName_vehicletv = '${INPUT}/urban_traffic_0.9x1.25_simyr2020-2025_c240930.nc'">> user_nl_clm 
  echo "stream_meshfile_vehicletv = '${INPUT}/lnd_mesh.nc'"
  echo "stream_year_first_vehicletv = 2000" >> user_nl_clm
  echo "stream_year_last_vehicletv = 2025" >> user_nl_clm
  echo "model_year_align_vehicletv = 2000" >> user_nl_clm
  echo "vehicletvmapalgo = 'nn'" >> user_nl_clm