Home > User’s guide > 3. Off-line Guide > 3.2. forcing files > 3.2.2. Forcing format in NETCDF case

3.2.2. Forcing format in NETCDF case

There is one file : FORCING.nc

Dimensions:

  • time
  • xx
  • yy

Variables:

  • time(time): units = "minutes since 1986-01-01 00:00:00" (example)
  • FORC_TIME_STEP:forcing time step (s)
  • LON(yy,xx): longitude (degrees)
  • LAT(yy,xx): latitude (degrees)
  • ZS(yy,xx): surface orography (m)
  • UREF(yy,: reference height for the wind (m)
  • ZREF(yy,: reference height for the temperature (m)

The forcing parameters are:

  • Atmospheric temperature: Tair(time,yy,xx) (K)
  • Atmospheric : Qair(time,yy,xx) (kg/m3)
  • Atmospheric : PSurf(time,yy,xx) (Pa)
  • Rain : Rainf(time,yy,xx) (kg/m2/s)
  • Snow : Snowf(time,yy,xx) (kg/m2/s)
  • Wind : Wind(time,yy,xx) (m/s)
  • Wind direction: Wind_DIR(time,yy,xx) (degrees from N, clockwise)
  • Long-wave radiation: LWdown(time,yy,xx) (W/m2)
  • direct short-wave radiation: DIR_SWdown(time,yy,xx) (W/m2)
  • diffuse short-wave radiation: SCA_SWdown(time,yy,xx) (W/m2)
  • flux of CO2 : CO2air(time,yy,xx) (kg/kg)

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Surfex (CNRM)