NOAA Coastal Services Center Sea Level Rise Data: Current Mean Higher High Water Inundation Extent

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
Publication_Date: 2012
Title:
NOAA Coastal Services Center Sea Level Rise Data: Current Mean Higher High Water Inundation Extent
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)
Online_Linkage: <http://www.csc.noaa.gov/slr>
Online_Linkage: <http://www.csc.noaa.gov>

Description:
Abstract:
These data were created as part of the National Oceanic and Atmospheric Administration Coastal Services Center's efforts to create an online mapping viewer depicting potential sea level rise and its associated impacts on the nation's coastal areas. The purpose of the mapping viewer is to provide coastal managers and scientists with a preliminary look at sea level rise (slr) and coastal flooding impacts. The viewer is a screening-level tool that uses nationally consistent data sets and analyses. Data and maps provided can be used at several scales to help gauge trends and prioritize actions for different scenarios. The Sea Level Rise and Coastal Flooding Impacts Viewer may be accessed at: <http://www.csc.noaa.gov/slr>
These data depict the potential inundation of coastal areas resulting from current Mean Higher High Water (MHHW) conditions. The process used to produce the data can be described as a modified bathtub approach that attempts to account for both local/regional tidal variability as well as hydrological connectivity. The process uses two source datasets to derive the final inundation rasters and polygons and accompanying low-lying polygons: the Digital Elevation Model (DEM) of the area and a tidal surface model that represents spatial tidal variability. The tidal model is created using the NOAA National Geodetic Survey's VDATUM datum transformation software (<http://vdatum.noaa.gov>) in conjunction with spatial interpolation/extrapolation methods and represents the MHHW tidal datum in orthometric values (North American Vertical Datum of 1988).
The model used to produce these data does not account for erosion, subsidence, or any future changes in an area's hydrodynamics. It is simply a method to derive data in order to visualize the potential scale, not exact location, of inundation from sea level rise.
Purpose:
The purpose of these data is to show potential inundation from current Mean Higher High Water (MHHW) for the area.
Supplemental_Information:
A detailed methodology for producing these data can be found via the following url: <http://www.csc.noaa.gov/slr/viewer/assets/pdfs/Inundation_Methods.pdf>
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Currentness_Reference:
The dataset is derived from the most recent elevation and VDATUM data available at date of processing.

Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -160.740
East_Bounding_Coordinate: -65.097
North_Bounding_Coordinate: 49.276
South_Bounding_Coordinate: 17.750

Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: climatologyMeteorologyAtmosphere
Theme_Keyword: elevation
Theme_Keyword: environment
Theme_Keyword: oceans

Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry/Topography
Theme_Keyword: sea level rise
Theme_Keyword: Shoreline
Theme_Keyword: inundation
Theme_Keyword: flooding

Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States

Access_Constraints: None
Use_Constraints:
These data illustrate the scale of potential flooding, not the exact location, and do not account for erosion, subsidence, or future construction. Inundation is shown as it would appear during the highest high tides (excludes wind driven tides) with the sea level rise amount. These data should be used only as a screening-level tool for management decisions. As with all remotely sensed data, all features should be verified with a site visit. The dataset is provided "as is," without warranty to its performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of this dataset is assumed by the user. This dataset should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: csc.info@noaa.gov

Data_Set_Credit:
Acknowledgment of the NOAA Coastal Services Center as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected.
Data_Quality_Information:
Logical_Consistency_Report:
Standard methods for determining inundation were used. The vertical accuracy of these data is dependent on the source elevation data and the error associated with vertical datum conversions within NOAA's VDatum software.
Completeness_Report:
The MHHW layer cover areas currently shown in the NOAA CSC Sea Level Rise and Coastal Flooding Impacts Viewer. The current status of areas of coverage for the tool can be accessed at: <http://www.csc.noaa.gov/slr>
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA Coastal Services Center
Publication_Date: 2012
Title: NOAA CSC Digital Elevation Models
Online_Linkage: <http://www.csc.noaa.gov/slr>
Type_of_Source_Media: online digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Source_Currentness_Reference:
The dataset is derived from the most recent elevation available at date of processing.
Source_Citation_Abbreviation: CSC DEMs
Source_Contribution:
The digital elevation model (DEM) of an area serves as one of two source datasets used to derive inundation outputs.

Source_Information:
Source_Citation:
Citation_Information:
Originator: NOAA Coastal Services Center
Publication_Date: 2012
Title: NOAA CSC VDATUM Tidal Surface Models
Online_Linkage: <http://vdatum.noaa.gov>
Type_of_Source_Media: online digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Source_Currentness_Reference:
The dataset is derived from the most recent VDATUM data available at date of processing.
Source_Citation_Abbreviation: CSC VDATUM Tidal Surfaces
Source_Contribution:
The tidal conversion surface of an area serves as one of two source datasets used to create the inundation outputs and is derived from NOAA National Geodetic Survey's VDATUM software.
Process_Step:
Process_Description:
The process to derive the inundation rasters and polygons and low-lying area polygons is as follows: 1. A tidal surface is generated using NOAA VDATUM tool and various spatial interpolation/extrapolation routines, dependent upon the area being mapped. The surface generated represents the spatial variability of offsets between MHHW, a tidal datum and NAVD88, an orthometric datum. 2. Using the DEM and the tidal surface, raster calculations are made using ArcGIS Spatial Analyst Raster Calculation tool to generate multiple rasters, one 32-bit floating point raster representing depth of inundation and one 8-bit single value raster representing the extent of inundation. 3. The hydrologic connectivity of the single value raster is evaluated using an 8-sided neighborhood rule in ArcGIS using the RegionGroup tool. The output raster from this process is then converted to a vector polygon feature class for further analysis. Using this 'base' feature class, a new feature class is created representing hydrologically connected areas. The 'base' feature class is also used to create a feature class representing unconnected 'low-lying' areas.
Source_Used_Citation_Abbreviation: CSC DEMs
Source_Used_Citation_Abbreviation: CSC VDATUM Tidal Surfaces
Process_Date: 2012

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0000001
Longitude_Resolution: 0.0000001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222101

Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.001
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: csc.info@noaa.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Any conclusions drawn from the analysis of this information are not the responsibility of the Coastal Services Center or its partners.
Custom_Order_Process: This data may be downloaded at: <http://www.csc.noaa.gov/slr>

Metadata_Reference_Information:
Metadata_Date: 201211
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: csc.info@noaa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998


Generated by mp version 2.9.12 on Thu Nov 8 08:46:04 2012