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Overview of current output files which will be converted to a CF compliant file |
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Terms:
Geographic coordinate systems:
In Delft3D there are two methods to store coordinates:
- Cartesian
- Spherical
SOBEK stores output in a cartesian system. If you start an empty SOBEK session the default is to show the Dutch Map stored in Amersfoort New system.
| Current Delft3D/SOBEK | CF Compliant | notes |
|---|---|---|---|
Datum (shape of the earth) | Delft3D:WGS_1984 | WGS_1984 | The geoid is not explicitly defined in the CF convention. There was some discussion on this. |
Projection/Geographic Coordinate System | Delft3D Spherical:WGS84 | Projection by grid mapping. Projection information is also stored. Data is alwasy provided in WGS84 |
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Distance function | Delft3D:Spherical & Cartesian |
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Quantity | Unit | Location | Cell method | Symbol | Standard Name | Descripton |
|---|---|---|---|---|---|---|
morphologic grid |
| D |
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hydrodynamic grid |
| Z (1) |
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domain decomposition boundaries |
| UV |
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open boundaries |
| UV |
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closed boundaries |
| UV |
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thin dams |
| UV |
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temporarily inactive water level points |
| Z |
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temporarily inactive velocity points |
| UV |
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Quantity | Unit | Location | Cell method | Symbol | Standard Name | |
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air temperature | °C | Z |
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| air_temperature |
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cloud coverage | % 1 | Z |
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| cloud_area_fraction |
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relative air humidity | % 1 | Z |
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| relative_humidity |
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wind speed | m/s | Z |
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| wind_speed |
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wave height | m | Z |
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| wave_height |
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wave vector | m | Z |
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orbital velocity amplitude | m/s | Z |
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wave period | s | Z |
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wave length | m | Z |
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short-wave energy | J/m^2 | Z |
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roller energy | J/m^2 | Z |
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transport velocity of roller energy | m/s | Z (UV) |
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transport velocity of wave energy | m/s | Z (UV) |
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wave force | N/m^2 | Z (UV) |
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roller force | N/m^2 | Z (UV) |
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water level (when dry: bed level) | m | Z |
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| sea_surface_elevation |
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water level | m | Z |
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water depth | m | Z |
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| depth |
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depth averaged velocity | m/s | Z (UV) |
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| sea_water_x_velocity? |
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horizontal velocity | m/s | Z (UV), c |
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velocity | m/s | Z (UV), c |
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| upward_sea_water_velocity |
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vertical velocity | m/s | Z, c |
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velocity in depth averaged flow direction | m/s | Z (UV), c |
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velocity normal to depth averaged flow direction | m/s | Z (UV), c |
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filtered depth averaged velocity | m/s | Z (UV), c |
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d.a. velocity fluctuations | m/s | Z (UV), c |
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froude number | Z |
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head | m | Z |
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| sea_water_density |
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density | kg/m^3 | Z, c |
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| sea_water_density |
non-hydrostatic pressure | Pa | Z, c |
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constituents(2) | (2) | Z, c |
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constituents flux(2) | (2)*m^3/s | Z (UV), c |
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constituents cumulative flux(2) | (2)*m^3 | Z (UV), c |
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turbulent quantities(2) | (2) | Z, i |
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vertical eddy viscosity | m^2/s | Z, i |
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vertical eddy diffusivity | m^2/s | Z, i |
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horizontal viscosity | m^2/s | Z,i |
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Richardson number | Z, i |
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vorticity | 1/s | D, c |
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enstrophy | 1/s^2 | D, c |
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characteristic velocity | m/s | Z |
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characteristic velocity magnitude | m/s | Z |
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height above bed for characteristic velocity | m | Z |
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bed shear velocity magnitude | m/s | Z |
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settling velocity | m/s | Z, i |
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equilibrium concentration | kg/m^3 | Z, c |
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bed load transport due to currents (zeta point) | (4) | Z |
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bed load transport due to currents | (4) | Z (UV) |
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bed load transport due to waves (zeta point) | (4) | Z |
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bed load transport due to waves | (4) | Z (UV) |
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suspended load transport due to waves (zeta point) | (4) | Z |
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suspended load transport due to waves | (4) | Z (UV) |
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bed load transport | (4) | Z (UV) |
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d.a. suspended transport | (4) | Z (UV) |
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total transport | (4) | Z (UV) |
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mean bed load transport | (4) | Z (UV) |
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mean d.a. suspended transport | (4) | Z (UV) |
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mean total transport | (4) | Z (UV) |
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concentration | kg/m^3 | Z,c(gensig) |
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settling velocity | m/s | Z,i(gensig) |
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bed shear stress | N/m^2 | Z (UV) |
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maximum bed shear stress | N/m^2 | Z |
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excess bed shear ratio | Z |
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initial bed level | m | D (2)i |
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| bedrock_altitude? |
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bed level in water level points | m | Z(2)i |
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bed slope | Z (UV) |
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cum. erosion/sedimentation | m | Z(2)i |
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morphological acceleration factor |
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available mass of sediment | kg/m^2 | Z |
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sediment fraction in top layer | Z |
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mud fraction in top layer | Z |
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sediment fraction | Z, c (bed) |
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cumulative mass error | m | Z |
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arithmic mean sediment diameter | m | Z |
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geometric mean sediment diameter | m | Z |
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hiding and exposure | Z |
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reduction factor due to limited sediment thickness | Z |
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other fields | (5) | Z(4) |
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- In the current version of the program, the hydrodynamic grid connects the 3D coördinates of the cell centres of the computation grid points. This may change in a future release to represent the bounding boxes of the grid cells.
- These fields are expanded depending on the contents of the data file. Units: temperature in °C, salinity in ppt, secondary flow in m/s, sediment concentrations in kg/m$^3$, turbulent kinetic energy in m$^2$/s$^2$, energy dissipation in m$^2$/s$^3$. The user defined tracer concentrations are in unknown units.
- These locations are only valid if the correct drying/flooding setting is selected in the file options dialog.
- Units depend on the model input. By default the units are m$^3$/sm where the volume represents m$^3$ stone. It can also be switched to m$^3$/sm where the volume represents m$^3$ bed volume, or kg/sm.
- New 2D and 3D fields of the same dimension as the grid are automatically detected. They are assumed to be located at water level points.
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Required information per file format:
- References to write and read routines.
- References to example files. (in quickplot tests)
- For each file we need information of how this file will be made CF compliant.
GRID
file:///d:/checkouts/matlab/Grid - Dutch Coast
file:///d:/checkouts/matlab/GRID - FLOW restart
file:///d:/checkouts/matlab/Grid - grensproject
file:///d:/checkouts/matlab/Grid - Maas
file:///d:/checkouts/matlab/Grid - opstuw
file:///d:/checkouts/matlab/GRID - portcarrara
file:///d:/checkouts/matlab/Grid - Roosteren
file:///d:/checkouts/matlab/Grid - SWAN
file:///d:/checkouts/matlab/GRID - trirst - JJ
file:///d:/checkouts/matlab/GRID - tru1 - JM
file:///d:/checkouts/matlab/GRID - weirs
file:///d:/checkouts/matlab/Grid - World
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