Davina L. Passeri Matthew V. Bilskie Scott C. Hagen Rangley C. Mickey P. Soupy Dalyander Victor M. Gonzalez 20210506 raster digital data U.S. Geological Survey Data Release doi:10.5066/P9BH4JFR St. Petersburg, FL U.S. Geological Survey https://doi.org/10.5066/P9BH4JFR Using version 5527 of the XBeach numerical model (Roelvink and others, 2009), barrier island morphological change was simulated at Dauphin Island, Alabama (AL), for a 30-year forecast of multiple storms and sea level rise, considering scenarios of no-action and beach and dune nourishment as described in Passeri and others (2021). The two-dimensional XBeach model can be applied to barrier islands to solve for time-dependent topography and bathymetry. The XBeach model setup requires the input of topographic and bathymetric elevations at each grid cell. Model inputs and outputs in the form of topography and bathymetry at each grid cell are provided in this data release. For further information regarding model input generation and visualization of model output, refer to Passeri and others (2021). These data were generated for the XBeach model to examine the effectiveness of nourishment in decadal barrier island morphological resilience at Dauphin Island, AL. Storm_257_Elevations_NA.zip is a dataset consisting of Federal Geographic Data Committee (FGDC) metadata and a Network Common Data Form (NetCDF) file containing the following variables: coordinates of the model grid (Easting and Northing) and the Storm 257 final bathymetric/topographic (z) model elevation values, in meters, for the no-action scenario. 20210506 publication date Complete As needed -88.3859263742364 -88.0476294255021 30.2800636354451 30.1718352348961 USGS Metadata Identifier USGS:ff699856-3a3a-48b9-983b-1101704e55a3 None U.S. Geological Survey USGS St. Petersburg Coastal and Marine Science Center SPCMSC morphologic change ISO 19115 Topic Category oceans elevation geoscientificInformation USGS Thesaurus digital elevation models storm surge barrier island migration sea-level change coastal processes marine geology geomorphology topography bathymetry Geographic Names Information System (GNIS) Content Gulf of Mexico Alabama Dauphin Island None. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. U.S. Geological Survey, USGS Southeast Region Davina Passeri Research Oceanographer Mailing

600 4th Street South

St. Petersburg FL 33701 US 727-502-8014 727-502-8001 dpasseri@usgs.gov U.S. Geological Survey Microsoft Windows 7 Enterprise; MATLAB R2017a Roelvink, D., Reniers, A., van Dongeren, A., van Thiel de Vries, J., McCall, R., and Lescinski, J. 20090915 Coastal Engineering Volume 56, Issues 11-12, November-December 2009, pg. 1133-1152 https://doi.org/10.1016/j.coastaleng.2009.08.006 Passeri, D.L., Bilskie, M.V., Hagen, S.C., Mickey, R.C., Dalyander, P.S., Gonzalez, V.M. 20210330 Water Volume 13, Issue 7, pg. 994 https://doi.org/10.3390/w13070944 Bilskie, M.V., Hagen, S.C., Irish, J.L. 20190102 Journal of Waterway, Port, Coastal and Ocean Engineering Volume 145, Issue 2, March 2019, pg. 1-14 https://doi.org/10.1061/(ASCE)WW.1943-5460.0000468 The Storm 257 final topographic and bathymetric elevations are supplied at each model grid cell and are the final model output for the no-action scenario. These are the complete Storm 257 final model elevations for the no-action scenario. This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata record carefully for additional details. This dataset contains the final model geospatial information and topographic/bathymetric elevations for the no-action scenario. Within the XBeach model, the coordinates are provided in the Universal Transverse Mercator (UTM) coordinate system; elevations are provided in meters (m). The vertical datum used for the elevation data is the North American Vertical Datum of 1988 (NAVD88) with an estimated resolution of 0.01 m. The XBeach model simulates morphologic change that results from hydrodynamic impacts and sediment transport. The model setup is outlined in Passeri and others, 2021. Boundary conditions in the form of hourly water levels and wave spectra were extracted from Bilskie and others, 2019. Modeled topographic and bathymetric elevations are output at the end of each simulation. 2020 Davina Passeri U.S. Geological Survey Research Oceanographer mailing and physical address

600 4th Street S

St. Petersburg FL 33701 USA (727)-502-8014 (727)-502-8001 dpasseri@usgs.gov Model bathymetric and topographic output was extracted using Mathworks MATLAB (R2017a) with functions included in the OpenEarth toolbox (provided by Deltares; https://publicwiki.deltares.nl/display/OET/Tools). The resulting bathymetric and topographic elevations from the model grid were then packaged into a NetCDF file using the functions available in MATLAB for inclusion in this data release. 2021 Davina Passeri U.S. Geological Survey Research Oceanographer mailing and physical address

600 4th Street S

St. Petersburg FL 33701 USA (727)-502-8014 (727)-502-8001 dpasseri@usgs.gov Gulf of Mexico Raster Grid Cell 1296 1301 1 Universal Transverse Mercator 16 0.999600 -87.000000 0.000000 500000.000000 0.000000 Row and Column 1 1 meters North American Datum of 1983 Geodetic Reference System 80 6378137.0 298.25722210100002 North American Vertical Datum of 1988 0.0001 meter Attribute values The Climate and Forecast (CF)-compliant metadata (version CF-1.6) in the header of the NetCDF file provides spatial information for projecting the data into a Geographic Information System (GIS). It also provides information about the conventions used for attributes in the dataset. The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information. U.S. Geological Survey, USGS Southeast Region Davina Passeri Research Oceanographer mailing address

600 4th Street South

St. Petersburg FL 33701 US 727-502-8014 727-502-8001 dpasseri@usgs.gov Storm_257_Elevations_NA.nc This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. NetCDF 4.3.3.1 Storm_257_Elevations_NA.nc is a NetCDF file that contains the Storm 257 final model topographic and bathymetric elevations, in meters, and coordinate information, in Easting and Northing, for the no-action scenario. The data download file is compressed and must be unzipped using software such as WinZip, 7zip, Peazip or pkUnzip before use. https://coastal.er.usgs.gov/data-release/doi-P9BH4JFR/data/Storm_257_Elevations_NA.zip None. 20210506 Davina Passeri U.S. Geological Survey, USGS Southeast Region Research Oceanographer mailing address

600 4th Street South

St. Petersburg FL 33701 US 727-502-8014 727-502-8001 dpasseri@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 None None