Total Water Level Model
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The Total Water Level Model (TWL) predicts water elevations every 100m along the shoreline, as daily
time series, based on offshore sea level, wave characteristics in the nearshore environment,
and shore zone characteristics.
Technical Details
Input Files
The TWL model requires the following input files:
| Path/Filename | Description | Fields |
|---|
| {StudyArea}/DunePts.shp |
Provides information about beach dunes fat 10m locations along the shoreline |
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TWL Inputs/BuoyObsData_{s}.csv, where {s} is the ID of the climate scenario to run:
0: Base
1: Low
2:Medium
3: High
4: Extreme.
This setting is a scenario variable.
|
Provides offshore water levels that are used as inputs to determine TWL levels along the shoreline.
The Offshore_Height, Offshore_Period, and Offshore_Direction are used as input into a set of
radial basis functions that interpolate these values to estimate base water levels in the near-shore environment.
This is read during startup |
Time
Offshore_Height (m)
Offshore_Period (hrs?)
Offshore_Direction (degrees)
WL_L
WL_H
|
| TWL Inputs/Climate Scenarios/{cs}/{cs}_slr.csv, where {cs} is the climate scenario (e.g 'Base') |
Sea Level Rise values (daily)
Read during Run Initialization, where an entire
run's worth of daily data is loaded. |
time
slr_{cs} |
| TWL Inputs/Climate_Scenarios/{cs}/Simulation_{n}/BuoyData_{cs}.csv |
Daily Buoy data for a given climate simulation. |
Offshore_Height
Offshore_Period
Offshore_Direction
SWL
lowSWL |
| TWL Inputs/ |
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| TWL Inputs/ |
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Output Files
The TWL model generates the following output files:
| Path/Filename | Description | Fields |
|---|
| TWL Inputs/Climate_Scenarios/{cs}/Simulation_{n}/DailyData_{cs}/DailyData_{t}.csv,
where {t} is the transect number.
|
Generated during Run Initialization, these files provide the radial basis function
inputs for each transect in the simulation being run.
|
Height_L
Height_H
Period_L
Period_H
Direction_L
Direction_H
Depth_L
Depth_H |
| TWL Inputs/ |
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Dune Point Coverage
The TWL model utilizes a "Dune Point" coverage (shape file) to store information about
Dune qualities at periodic intervals. It contains both required fields and "autogenerated" fields.
| Field | Description | Type | Required |
|---|
| DUNEINDX | Dune Index | long | Yes |
| TANB | Transect Slope | double | Yes |
| DT | Dune Toe location | double | Yes |
| DUNECREST | Dune Crest location | double | Yes |
| BEACHWDTH | Beach Width | float | Yes |
| NORTHING | Northing Toe | double | Yes |
| EASTING | Easting Toe | double | Yes |
| NORTHNGCR | Northing Crest | double | Yes |
| EASTNGCR | Easting Crest | double | Yes |
| EASTNGSH | Easting Shoreline | double | Yes |
| SCRate | Shoreline Change | float | Yes |
| BEACHTYPE | Beach Type | int | Yes |
| GAMMAROUGH | Gamma Rough | float | Yes |
| DUNEHEEL | Dune Heel | float | Yes |
| FRONTSLOPE | Front Slope | float | Yes |
| BACKSLOPE | Back Slope | float | Yes |
| DUNEWIDTH | Dune Width | float | Yes |