Urban Bondaries

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: National Weather Service

Publication_Date: 1998

Title: Urban Bondaries

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage: <http://www.nws.noaa.gov/geodata/catalog/national/html/urban.htm>

Description:

Abstract:

This data set contains Urban boundaries of the U.S. as defined by the U.S. Census Bureau as urban areas. This data set is updated as needed by National Weather Service's (NWS) Weather Forecast Offices (WFO).

Purpose:

The data set was developed in order to assist WFO forecasters to issue weather warnings and forecasts based upon selection of some localities by city limits (polygons) as opposed to point locations.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: unknown

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.647383

East_Bounding_Coordinate: -66.968767

North_Bounding_Coordinate: 49.002493

South_Bounding_Coordinate: 24.546288

Keywords:

Theme:

Theme_Keyword: Urban Areas

Theme_Keyword: Cities

Theme_Keyword: Towns

Place:

Place_Keyword: CONUS

Access_Constraints: None

Use_Constraints:

None. Users are cautioned that this data set, unlike the other data in the AWIPS Map Database Catalog (AMDC) which is at a resolution of 1:2,000,000, this data set is at a 1:100,000 resolution and cooresponding borders will not match.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ira Graffman

Contact_Organization: National Weather Service

Contact_Position: Physical Scientist

Contact_Address:

Address_Type: mailing and physical address

Address: 1325 East West Highway

City: Silver Spring

State_or_Province: MD

Postal_Code: 20904

Country: USA

Contact_Voice_Telephone: 301 713 0763 x 104

Contact_Electronic_Mail_Address: ira.graffman@noaa.gov

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.2.0.700

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The Bureau of the Census states that the data are accurate against Federal information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy. The NWS changes are accurate to the degree that the local offices use attribute information that is specific to them, this information is obtained from local, county or state sources.

Logical_Consistency_Report:

All polygons are tested for closure. The Census Bureau uses its internally developed Geographic Update System to enhance and modify spatial and attribute data in the Census TIGER database. Standard geographic codes, such as FIPS codes for states, counties, municipalities, and places, are used when encoding patial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census TIGER database files. Most of the Codes themselves were provided to the Census Bureau by the USGS, the agency esponsible for maintaining FIPS 55. Feature attribute information has been examined but has not been fully tested for onsistency.

The NWS checks additions/changes for polygon overlaps, gaps and "slivers" using ArcView 3.x. Names for new areas are provided by the local WFO. Numbers are chosen to be unique.

Completeness_Report:

Data completeness of the original TIGER/Line files reflects the contents of the Census TIGER database at the time the TIGER/Line files for 1995. The data set is updated by NWS whenever it is determined by a WFO that a boundary has changed or a new area must be added.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Department of Commerce

Publication_Date: 1995

Title: Census TIGER database

Geospatial_Data_Presentation_Form: vector digital data

Source_Scale_Denominator: 100,000

Type_of_Source_Media: online shapefile

Source_Citation_Abbreviation: TIGER

Process_Step:

Process_Description:

Data was extracted from the original TIGER 95 data set on a per state basis. The FPL code was expanded to be one digit larger and an attempt was made to make the codes unique by incrementing the digit whenever another code was found to be equal. The state data sets were then merged into a single national dataset.

Source_Used_Citation_Abbreviation: TIGER 95

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ira Graffman

Contact_Organization: National Weather Service

Contact_Position: Physical Scientist

Contact_Address:

Address_Type: mailing and physical address

Address: 1325 East West Highway

City: Silver Spring

State_or_Province: MD

Postal_Code: 20904

Country: USA

Contact_Voice_Telephone: 301 713 0763 x 104

Contact_Electronic_Mail_Address: ira.graffman@noaa.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 24238

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000458

Longitude_Resolution: 0.000458

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: ub12fe02

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: FPL

Attribute_Definition: "Unique" numeric identifier

Attribute:

Attribute_Label: FIPS

Attribute_Definition: State-County FIPS code in which the area exists

Attribute:

Attribute_Label: CWA

Attribute_Definition: WFO with responsibility for the area

Attribute:

Attribute_Label: NAME

Attribute_Definition: Name of place

Attribute:

Attribute_Label: STATE

Attribute_Definition: State in which place exists

Attribute:

Attribute_Label: LON

Attribute_Definition: Longitude of centroid of place

Attribute:

Attribute_Label: LAT

Attribute_Definition: Latitude of centroid of place

Distribution_Information:

Resource_Description: Downloadable Data

Distribution_Liability: None

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 52.854

Custom_Order_Process: None

Metadata_Reference_Information:

Metadata_Date: 20071018

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Weather Service

Contact_Person: Ira Graffman

Contact_Position: Physical Scientist

Contact_Address:

Address_Type: mailing and physical address

Address: 1325 East West Highway

City: Silver Spring

State_or_Province: MD

Postal_Code: 20904

Country: USA

Contact_Voice_Telephone: 301 713 0763 x 104

Contact_Electronic_Mail_Address: ira.graffman@noaa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile