NOAA Coastal Services Center Sea Level Rise Data: Mapping Confidence

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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: 20130101
Title:
NOAA Coastal Services Center Sea Level Rise Data: Mapping Confidence
Geospatial_Data_Presentation_Form: vector digital data
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 mapping confidence of the associated Sea Level Rise inundation data, for the sea level rise amount specified. Areas that have a low degree of confidence, or high uncertainty, represent locations that may be mapped correctly (either as inundated or dry) less than 8 out of 10 times. Areas that have a high degree of confidence, or low uncertainty, represent locations that will be correctly mapped (either as inundated or dry) more than 8 out of 10 times or that there is an 80 percent degree of confidence that these areas are correctly mapped. Areas mapped as dry (no inundation) with a high confidence or low uncertainty are coded as 0. Areas mapped as dry or wet with a low confidence or high uncertainty are coded as 1. Areas mapped as wet (inundation) with a high confidence or low uncertainty are coded as 2. The NOAA Coastal Services Center has tentatively adopted an 80 percent rank (as either inundated or not inundated) as the zone of relative confidence. The use of 80 percent has no special significance but is a commonly used rule of thumb measure to describe economic systems (Epstein and Axtell, 1996). In short, the method includes the uncertainty in the lidar derived elevation data (root mean square error, or RMSE) and the uncertainty in the modeled tidal surface from the NOAA VDATUM model (RMSE). This uncertainty is combined and mapped to show that the inundation depicted in this data is not really a hard line, but rather a zone with greater and lesser chances of getting wet. For a detailed description of the confidence level and its computation, please see the Mapping Inundation Uncertainty document available at: <http://www.csc.noaa.gov/slr/viewer/assets/pdfs/Elevation_Mapping_Confidence_Methods.pdf>
Purpose:
The purpose of these data is to show the level of confidence of the sea level rise inundation data based on the uncertainty in the lidar elevation data and the uncertainty in the NOAA VDATUM model.
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/Elevation_Mapping_Confidence_Methods.pdf>
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20120101
Ending_Date: 20130101
Currentness_Reference:
The dataset is derived from the most recent elevation and VDATUM data available at the date of processing.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.918668
East_Bounding_Coordinate: -69.827408
North_Bounding_Coordinate: 42.878107
South_Bounding_Coordinate: 41.083248
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: climatologyMeteorologyAtmosphere
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry/Topography
Theme_Keyword: sea level rise
Theme_Keyword: Shoreline
Theme_Keyword: inundation
Theme_Keyword: flooding
Theme_Keyword: elevation
Theme_Keyword: environment
Theme_Keyword: oceans
Theme_Keyword: confidence
Theme_Keyword: uncertainty
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Access_Constraints: None
Use_Constraints:
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.
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143

Data_Quality_Information:
Logical_Consistency_Report: The data were reviewed for consistency and anomalies.
Completeness_Report:
The mapping confidence extent 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:
Process_Step:
Process_Description:
1. NOAA CSC has created an ArcGIS model, based on the method described at <http://www.csc.noaa.gov/slr/viewer/assets/pdfs/Elevation_Mapping_Confidence_Methods.pdf>, that uses the uncertainty values from NOAA VDATUM and the uncertainty of the elevation data to create depth rasters and z-score rasters for each sea level rise inundation level. 2. Each z-score raster is reclassified to areas of low and high confidence. Areas mapped as dry (no inundation) with a high confidence or low uncertainty are classified as 0. Areas mapped as dry or wet with a low confidence or high uncertainty are classified as 1. Areas mapped as wet (inundation) with a high confidence or low uncertainty are classified as 2.
Process_Date: 20130101
Process_Step:
Process_Description:
The Massachusetts Office of Coastal Zone Management (CZM) received the data from NOAA as individual datasets for inundated areas, unconnected low-lying areas, and mapping confidence for current mean higher high water and 1-6 ft sea level rise scenarios. Each inundated areas and low-lying areas feature class was projected to the Massachusetts State Plane Coordinate System, Mainland Zone (FIPS zone 2001), meters, and dissolved in ArcGIS. For more information about the inundated and low-lying areas data, please see the metadata for these features available at <http://www.ncddc.noaa.gov/approved_recs/nos_de/csc/Inundation/Inundation/NOAA_CSC_SLR_1to6ft_metadata.html>. Each mapping confidence raster was converted to polygon features and projected to the Massachusetts State Plane Coordinate System, Mainland Zone (FIPS zone 2001), meters. The features were then dissolved based on the grid code attribute. Features with a grid code value of 1 (areas mapped as dry or wet with a low confidence) were extracted and merged with the inundated areas and unconnected low-lying areas for each inundation scenario. Two fields describing the sea level rise scenario and features were then added to each dataset. Finally, the features were converted from multipart to singlepart features to improve drawing performance.
Process_Date: 20130910
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: CZM Data Manager
Contact_Address:
Address_Type: mailing and physical
Address: 251 Causeway Street, Suite 800
City: Boston
State_or_Province: MA
Postal_Code: 02114-2138
Country: USA
Contact_Voice_Telephone: 617-626-1200
Contact_Facsimile_Telephone: 617-626-1240
Contact_Electronic_Mail_Address: czm@state.ma.us
Hours_of_Service: 0900 hrs to 1600 hrs EST
Contact_Instructions: email only

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 217512

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 StatePlane Massachusetts Mainland FIPS 2001
Lambert_Conformal_Conic:
Standard_Parallel: 41.71666666666667
Standard_Parallel: 42.68333333333333
Longitude_of_Central_Meridian: -71.5
Latitude_of_Projection_Origin: 41.0
False_Easting: 200000.0
False_Northing: 750000.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000008155898179040834
Ordinate_Resolution: 0.000000008155898179040834
Planar_Distance_Units: meter
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: MARI_BOX_4ft_merged
Entity_Type_Definition:
Mapping confidence of the NOAA Coastal Services Center sea level rise inundation data
Entity_Type_Definition_Source: NOAA
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: SEA_LVL_RS
Attribute_Definition: Sea level rise inundation extent
Attribute_Definition_Source: CZM
Attribute_Domain_Values:
Unrepresentable_Domain: Description of features.
Attribute:
Attribute_Label: DESCRIPTN
Attribute_Definition: Description of features
Attribute_Definition_Source: CZM
Attribute_Domain_Values:
Unrepresentable_Domain: Description of features.

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
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: 20130910
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 Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.9.12 on Tue Sep 10 15:09:22 2013