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To apply FIAT in a Delft-FEWS workflow, you will need an inundation grid series mapstack (e.g. satellite image or flood inundation model like Delft-FM or 3Di-subgrid) to hand over to FIAT. When providing a max-depth map to FIAT it can calcualte calculate the (financial) damage per category on the map or as a total value for the entire area . This max-depth map needs to be prepared in FEWS as a mapstack series with one timestep. When you also provide a flood wave (mapstack series with multiple timestep) to FIAT, it can compute the human impact (mortality and casualties) by internal conversion of the wave into (vertical) rise rate and an arrival time map.
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{
"Direct_industrie":
{
"damage function filepath": "../../SSM2015/Functions/393.csv",
"maximum damage": 1769.0,
"output grid filepath": "Direct_industrie.tif",
"weight": 1.0,
"units": "m2",
"exposure grid filepath": "../../SSM2015/25x25m_grid/industrie.tif"
},
"Direct_kantoor":
{
"damage function filepath": "../../SSM2015/Functions/391.csv",
"maximum damage": 1283.0,
"output grid filepath": "Direct_kantoor.tif",
"weight": 1.0,
"units": "m2",
"exposure grid filepath": "../../SSM2015/25x25m_grid/kantoor.tif"
},
"Aantal_eengezinswoningen":
{
"damage function filepath": "../../SSM2015/Functions/800.csv",
"maximum damage": 1,
"output grid filepath": "Aantal_eengezinswoningen.tif",
"weight": 1.0,
"units": "objecten",
"exposure grid filepath": "../../SSM2015/25x25m_grid/eeng_aant.tif"
},
"Direct_eengezinswoningen_inboedel_normaal":
{
"damage function filepath": "../../SSM2015/Functions/8.csv",
"maximum damage": 70000.0,
"output grid filepath": "Direct_eengezinswoningen_inboedel_normaal.tif",
"weight": 1.0,
"units": "objecten",
"exposure grid filepath": "../../SSM2015/25x25m_grid/eeng_aant.tif"
},
"Inwoners":
{
"damage function filepath": "../../SSM2015/Functions/2_0001.csv",
"maximum damage": 1283.0,
"output grid filepath": "Inwoners.tif",
"weight": 1.0,
"units": "personen",
"exposure grid filepath": "../../SSM2015/25x25m_grid/inwoners.tif"
}
} |
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The NetCDF-CF files
The max_depth.nc (input) file is produced by the FEWS general adapter and typically holds only one timestep. If the file holds multiple timesteps, FIAT assumes that the last timestep represents the maximum. Please remember to specify the missing value (e.g. -999) when exporting the file from FEWS, or prevent an export of missing values by filling up the grid with zero's.
The floodwave.nc (input) file is produced by the FEWS general adapter and is expected to hold a mapstack of grids with equal timestep. Be aware that FIAT takes a few minutes to convert these files into a rise_rate and travel_time data file. Skip this export when you are not calculating the human impact (mortality and casualties)
The impact_on_grid.nc (output) file is a mapstack file imported by the FEWS general adapter. It holds for each category a map with the associated damage. The data is written with the T0 timestep, assigning the category name to the NetCDF-variable.
The impact_summary.nc (output) file is imported by the FEWS general adapter. It is a (scalar) timeseries file that holds, for each category, a single value with the associated total damage in the area.
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