Short Citation:
Office for Coastal Management, 2021: NOAA Office for Coastal Management Sea Level Rise Data: Mapping Confidence, https://www.fisheries.noaa.gov/inport/item/48107.

Item Identification

Title: NOAA Office for Coastal Management Sea Level Rise Data: Mapping Confidence
Short Name: NOAA_OCM_SLR_confidence
Status: Completed
Publication Date: 2016
Abstract:

These data were created as part of the National Oceanic and Atmospheric Administration Office for Coastal Management'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: https://www.coast.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 Office for Coastal Management 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:

https://coast.noaa.gov/data/digitalcoast/pdf/mapping-inundation-uncertainty.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.

Notes:

10964

Supplemental Information:

A detailed methodology for producing these data can be found via the following url:

https://coast.noaa.gov/data/digitalcoast/pdf/mapping-inundation-uncertainty.pdf

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

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords Earth Science > Land Surface > Geomorphic Landforms/Processes > Coastal Processes > Flooding
Global Change Master Directory (GCMD) Science Keywords Earth Science > Land Surface > Geomorphic Landforms/Processes > Coastal Processes > Sea Level Changes
Global Change Master Directory (GCMD) Science Keywords Earth Science > Land Surface > Topography > Terrain Elevation > Digital Elevation/Terrain Model (Dem)
ISO 19115 Topic Category climatologyMeteorologyAtmosphere
None Bathymetry/Topography
None confidence
None elevation
None environment
None flooding
None inundation
None oceans
None sea level rise
None Shoreline
None uncertainty

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America
None United States

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of the Office for Coastal Management

or its partners.

Data Set Credit: Acknowledgment of the NOAA Office for Coastal Management 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.

Support Roles

Data Steward

CC ID: 620669
Date Effective From: 2016
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 620671
Date Effective From: 2016
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 620672
Date Effective From: 2016
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 620670
Date Effective From: 2016
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 620675
W° Bound: 144.5
E° Bound: -64.5
N° Bound: 49.276
S° Bound: -14.5

Extent Group 1 / Time Frame 1

CC ID: 620674
Time Frame Type: Discrete
Start: 2016

Access Information

Security Class: Unclassified
Data Access Procedure:

This data may be downloaded at: https://www.coast.noaa.gov/slrdata;

Data Access Constraints:

None

Data 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.

URLs

URL 1

CC ID: 620665
URL: https://www.coast.noaa.gov/slr
URL Type:
Online Resource

URL 2

CC ID: 620666
URL: https://coast.noaa.gov/digitalcoast/tools/slr
URL Type:
Online Resource

URL 3

CC ID: 620667
URL: https://coast.noaa.gov/slrdata
URL Type:
Online Resource

URL 4

CC ID: 620668
URL: https://www.coast.noaa.gov
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 620693
Activity Date/Time: 2017-11-01
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 620692
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Data Quality

Completeness Report:

The mapping confidence extent areas currently shown in the NOAA OCM Sea Level Rise and Coastal Flooding Impacts Viewer.

The current status of areas of coverage for the tool can be accessed at: https://www.coast.noaa.gov/slr

Conceptual Consistency:

The data were reviewed for consistency and anomalies.

Lineage

Process Steps

Process Step 1

CC ID: 620663
Description:

1. NOAA OCM has created an ArcGIS model, based on the method described at https://coast.noaa.gov/data/digitalcoast/pdf/mapping-inundation-uncertainty.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/Time: 2016-01-01 00:00:00

Catalog Details

Catalog Item ID: 48107
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 14:15+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-07-02 15:17+0000
Metadata Record Published: 2017-11-16
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2018-11-17