**HAPEX SAHEL Information System**

*A joint project between CESBIO, ORSTOM and CNES*

**Comment:**- This table contains 10 minutes average flux data.

**Principal investigator:**- Henk A.R. DE BRUIN

**The fields of the table are:**: This column contains the name of the grid where the data was taken.**GRID_ID**: This column contains the number of the station in the grid cell.**GRID_ORDER**: This column contains the date on which the observation was made in the format DD-MMM-YY.**OBS_DATE**: This column contains the time when the observation was made (end of averaging period), in GMT.**OBS_TIME**: This column contains the decimal time.**DECIMAL_TIME**:**NET_RADIATION**: This column contains the vertical soil heat flux in the soil ( W m-2 ).**SOIL_HEAT_FLUX**: This column contains the sensible heat flux from Eddy covariance method ( W m-2 ).**SENSIBLE_HEAT_FLUX_1**: This column contains the latent heat flux from Eddy covariance method ( W m-2 ).**LATENT_HEAT_FLUX_1**: This column contains the sensible heat flux from gradient method ( W m-2 ).**SENSIBLE_HEAT_FLUX_2**: This column contains the latent heat flux from gradient method ( W m-2 ).**LATENT_HEAT_FLUX_2**: This column contains the sensible heat fluw from Bowen ratio method ( W m-2 ).**SENSIBLE_HEAT_FLUX_3**: This column contains the latent heat flux from Bowen ratio method ( W m-2 ).**LATENT_HEAT_FLUX_3**: This column contains the amount of horizontal wind speed that is transported vertically, eddy covariance method ( kg m-1 s-2 ).**MOMENTUM_FLUX**: This column contains the the amount of CO2 that is transported vertically, Eddy covariance method ( umol m-1 s-2 ).**CO2_CONCENTRATION_FLUX**: This column contains the certification level for the data : T)est,U)nchecked by PI, C)hecked by PI.**CERT_LEVEL**: This column contains the revision date for the data in the format DD-MMM-YY.**REV_DATE**

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