Introduction.md

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   * From CDS On Atlantic  (2005 to 2017) [-101W;-31W/-41S;40.9N] (0.25° x 0.3°)
   * From native data On Atlantic  (2000 to 2020) [-101°W;-31°W/-41°S;41°N] (0.15° x 0.4°)
 
-* [DFS5.2](images/DFS5.2_methodology.png)* (Drakkar Forcing Set) : Reanalysis product (Mix ERA40/ ERAinterim and correction from 1958 to 2017) (0.7°)
+* [DFS5.2](images/DFS5.2_methodology.png) (Drakkar Forcing Set) : Reanalysis product (Mix ERA40/ ERAinterim and correction from 1958 to 2017) (0.7°)
 
  It includes the following surface variables required by the NEMO bulk formula to calculate heat, freshwater and momentum fluxes across the air-sea interface (i.e. the surface boundary condition to the model primitive equations).
-  * zonal and meridional components of the 10-m wind : u10, v10
-  * 2-m air humidity : q2
-  * 2-m air temperature : t2
-  * downward shortwave radiation at the sea surface : radsw
-  * downward longwave radiation at thesea surface: radlw
-  * precipitation total and solid: P, snow
-  * sea level pressure : slp (3h or from ERAinterim 6h) 
+  - [x] zonal and meridional components of the 10-m wind : u10, v10
+  - [x] 2-m air humidity : q2
+  - [x] 2-m air temperature : t2
+  - [x] downward shortwave radiation at the sea surface : radsw
+  - [x] downward longwave radiation at thesea surface: radlw
+  - [x] precipitation total and solid: P, snow
+  - [x] sea level pressure : slp (for DFS5.2 : 3h or from ERAinterim 6h)
 
 
 *_The Making Of the DRAKKAR FORCING SET DFS5 from (https://www.drakkar-ocean.eu/publications/reports/report_DFS5v3_April2016.pdf)_
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 * Global Bathymetry from ETOPO1, ETOPO2
 * Global Bathymetry from GEBCO 2019
-* Global Bathymetry From T-UGOm + postprocessing from F.Lyard (ref??)
+* Global Bathymetry From T-UGOm + postprocessing from F.Lyard . Its an improved topography in coastal environments developed by Florent Lyard and Damien Alain for FES2020 including new bathymetry data not taken into account in etopo2
 
 
 Is one of the first step of the preprocessing of a Nemo configuration. The interpolation onto the model grid has been conducted by taking all the original grid points falling into an NEMO grid box, and taking the median of those points.It s possible to choose the mean operator also. This procedure produces a smoothing of the sub-grid scale topography.