3.2.1. Forcing format in ASCII and binary cases

There are:

• one ASCII/binary file by atmospheric parameter beginning by Forc_..
• one ASCII configuration file named Params_config.txt

The forcing parameters are:

• Atmospheric temperature: Forc_TA.txt / Forc_TA.bin (K)
• Atmospheric humidity: Forc_QA.txt / Forc_QA.bin (kg/kg)
• Atmospheric pression: Forc_PS.txt / Forc_PS.bin (Pa)
• Rain : Forc_RAIN.txt / Forc_RAIN.bin (kg/m2/s)
• Snow precipitation: Forc_SNOW.txt / Forc_SNOW.bin (kg/m2/s)
• Wind speed: Forc_WIND.txt / Forc_WIND.bin (m/s)
• Wind direction: Forc_DIR.txt / Forc_DIR.bin (degrees from N, clockwise)
• Long-wave radiation: Forc_LW.txt / Forc_LW.bin (W/m2)
• direct short-wave radiation: Forc_DIR_SW.txt / Forc_DIR_SW.bin (W/m2)
• diffuse short-wave radiation: Forc_SCA_SW.txt / Forc_SCA_SW.bin (W/m2)
• near surface CO2 concentration: Forc_CO2.txt / Forc_CO2.bin (kg/m3)

The Forc_... files contain a line by forcing time step. This line contains the value of the forcing parameters for each point of the user domain.

The Params_config.txt file contain following information:

• Y/N (only in binary case) to specify if the forcing data must be swapped
• number of points
• number of forcing time steps during the run
• forcing time step (seconds)
• year
• month
• day
• hour (seconds)
• longitude for each point of the domain (degrees)
• latitude for each point of the domain (degrees)
• altitude of each point of the domain (m)
• height of temperature forcing for each point of the domain (m)
• height of wind forcing for each point of the domain (m)