For more info on XBeach please refer to https://public.deltares.nl/display/XBEACH/Home
XBeach names
XBeach name 
standard_name 
variable name 
(m) xcoord. comp. grid (positive shoreward, perp. to coastline) 


(m) ycoord. comp. grid 


(m) xcoord. comp. grid (positive shoreward, perp. to coastline) 


(m) ycoord. comp. grid 


(m) xcoord. in u points 


(m) ycoord. in v points 


(m) world xcoordinates 
projection_x_coordinate (CF) 

(m) world ycoordinates 
projection_y_coordinate (CF) 

(m) grid size xdirection 


(m) grid size ydirection 


(m) xorigin of grid in world coordinates 


(m) yorigin of grid in world coordinates 


(rad) (deg on input) angle of grid w.r.t. East 


depths defined positive downwards (1) or upwards(1) 
(attribute in depth variable CF) 

(rad) minimum angle of computational wave grid (carth. in rad) 


(rad) minimum angle of computational wave grid (carth. in rad) 


local number of grid cells xdirection 


local number of grid cells ydirection 


(m) bed level 


(m) initial bed level 
sea_surface_height_above_geoid (CF) (at t=0) 

(rad) wave angles directional distribution w.r.t. comp. xaxis 
sea_surface_wave_to_direction 

number of wave direction bins 


(rad) wave direction bin size 


(rad) mean incident wave angle 


cos(theta) 


sin(theta) 


(rad) mean wave angle 


(N/m2) wave force xdirection 


(N/m2) wave force ydirection 


(N/m) radiation stress 


(N/m) radiation stress 


(N/m) radiation stress 


ratio group velocity/wave celerity 


(m) wave height 


(m/s) group velocity xdirection 


(m/s) group velocity ydirection 


(m/s) wave celerity xdirection 


(m/s) wave celerity ydirection 


(rad/s) wave celerity thetadirection (refraction) 


(J/m2/rad) directionally distributed wave energy 


(rad) wave angles 


cos of wave angles 


sin of wave angles 


(rad/s) relative frequency 


(J/m2/rad) directionally distributed roller energy 


(rad/m) wave number 


(m/s) wave celerity 


(m/s) group velocity 


(rad/s) mean frequency 


(rad/s) mean abs frequency 


(m) water depth 
sea_floor_depth_below_sea_level 

(m) water level 
sea_surface_height_above_geoid (CF) 

(m) water level due to tide alone 


(s) input time of input tidal signal 


(m) input tidal signal 


(s) input time of input wind signal 


(m/s) input wind velocity 


(deg nautical) input wind direction 


(m/s) uniform wind velocity current time 


(m/s) uniform wind direction current time 


(m/s) rate of change water level 


(m/s) water surface gradient in xdirection 


(m/s) water surface gradient in ydirection 


bed level gradient in xdirection 


bed level gradient in ydirection 


(m/s) rate of change bed level 


(m/s) (GLM) xvelocity in upoints 


(m/s) (GLM) yvelocity in vpoints 


(m2/s) xdischarge in upoints 


(m2/s) ydischarge in upoints 


(m) cum. sedimentation/erosion 


(kg/m3/m) bed concentration gradient xdir. 


(kg/m3/m) bed concentration gradient ydir. 


(kg/m3/m) suspended concentration gradient xdir. 


(kg/m3/m) suspended concentration gradient ydir. 


(m/s) incident bound wave velocity 


(Nm/m2) wave energy 


(Nm/m2) roller energy 


(m/s) orbital velocity 


(W/m2) dissipation 


fraction breaking waves 


(m/s) Stokes drift 


(rad) mean wave direction 


(m/s) Eulerian mean velocity xdir. 


(m/s) Eulerian mean velocity ydir. 


(m/s) (GLM) velocity magnitude upoints 


(m/s) (GLM) velocity magnitude upoints 


(m/s) (GLM) velocity magnitude vpoints 


(m/s) (GLM) velocity magnitude vpoints 


(m/s) (GLM) xvelocity cell centre (for output) 


(m/s) (GLM) yvelocity cell centre (for output) 


(m/s) Eulerian mean xvelocity cell centre (for output) 


(m/s) Eulerian mean yvelocity cell centre (for output) 


(m) water depth previous time step 


mask wet/dry upoints 


mask wet/dry vpoints 


mask wet/dry etapoints 


(m) water depth in upoints 


(m) water depth in vpoints 


(m) water depth in upoints 


(m) water depth in vpoints 


(m/s) velocity magnitude in cell centre 


(m3/m3) depthaveraged concentration for each sediment fraction 


(m/s) xcomp. Stokes drift 


(m/s) ycomp. Stokes drift 


(m/s) return flow due to roller 


(m/s) return flow due to roller after breaker delay 


(m) incoming bound long wave 


(W/m2) roller energy dissipation 


(m/s) longterm mean velocity at bnds in xdirection 


(m/s) longterm mean velocity at bnds in ydirection 


0 = uniform grid size, 1 = variable grid size 


(m/s) y velocity in u points 


(m/s) x velocity in v points 


(m) D50 grain diameters for all sediment classses 


(m) D90 grain diameters for all sediment classses 


equilibrium sediment concentartion factor for each sediment class 


calibration factor for u critical for each sediment class 


(s) sediment response time for each sediment class 


(m2/s) suspended sediment transport xdir. for each sediment class (excluding pores) 


(m2/s) suspended sediment transport ydir. for each sediment class (excluding pores) 


(m2/s) bed sediment transport xdir. for each sediment class (excluding pores) 


(m2/s) bed sediment transport ydir. for each sediment class (excluding pores) 


(m3/m3) depthaveraged bed equilibrium concentration for each sediment class 


(m3/m3) depthaveraged suspended equilibrium concentration for each sediment class 


(m/s) time averaged flow velocity due to wave assymetry 


maximum wave surface slope used in roller dissipation formulation 


(m^2/s^2) near bed turbulence intensity due to depth induces breaking 


(s) wave period interval associated with breaking induced turbulence 


(m) total bed level change due to avalanching 


(m) maximum elevation in simulation 


(m) minimum elevation in simulation for subroutine dispersion 


skewness of short waves 


asymmetry of short waves 


(m) groundwater head (differs from gwlevel) 


(m) groundwater table (min(zb,gwhead)) 


(m) vertical size of aquifer through which groundwater can flow 


(m) level of the bottom of the aquifer 


(m/s) groundwater flow in xdirection 


(m/s) groundwater flow in ydirection 


(m/s) groundwater flow in zdirection (interaction between surface and ground water) 


(m) Infiltration layer depth used in quasivertical flow model for groundwater 


(m) boundary condition back boundary for groundwater head 


(m^2/s^2) depth averaged turbulence intensity due to long wave breaking 


(m/s) bed erosion rate per fraction 


(m/s) implicit bed deposition rate per fraction 


(m/s) explicit bed deposition rate per fraction 


number of bed layers (can be difefrent for each computational cell) 


(m/s) uvelocity (timeaveraged) for wci 


(m) long wave roller thickness 


(m/s) vvelocity (timeaveraged) for wci 


(m) waterlevel (timeaveraged) for wci 


(m^2/s^2) normalized dynamic pressure 


(m/s) vertical velocity at the bottom 


(m/s) vertical velocity at the free surface 


(N/m^2) xcomponent of bed shear stress 


(N/m^2) ycomponent of bed shear stress 


(W/m^2) dissipation rate due to bed friction 


(m2/s) Sediment transport integrated over bed load and suspended and for all sediment grains 


(m2/s) Sediment transport integrated over bed load and suspended and for all sediment grains 


(m3/m3) Sediment concentration integrated over bed load and suspended and for all sediment grains 


(m/s) ! Vertical velocity at boundary due to (short) waves2 


(m) ! Surface elevation at boundary due to (short) waves 


(m2/s) horizontal viscosity coefficient 

1 Comment
Fedor Baart
I'll continue work on this later....