TWEB Routes

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: 19990401

Title: TWEB Routes

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage:

<http://www.nws.noaa.gov/geodata/catalog/transportation/html/tweb.htm>

Description:

Abstract:

The Transcribed Weather Enroute Broadcast (TWEB) are the routes used for TWEB text products for the contiguous U.S.

Purpose:

To allow Weather Forecast Offices to issue TWEB route forecasts/products. This route line shapefile and the anchor point point shapefile comprise a complete data set of TWEB routes and nodes.

Supplemental_Information:

More information about TWEBs can be found at <http://aviationweather.noaa.gov/awc/help/about_twebs.html>.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Currentness_Reference: 19990104

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.246110

East_Bounding_Coordinate: -68.018060

North_Bounding_Coordinate: 49.910830

South_Bounding_Coordinate: 24.556110

Keywords:

Theme:

Theme_Keyword: TWEB

Theme_Keyword: Acnhor Points

Theme_Keyword: aviation

Place:

Place_Keyword: CONUS

Access_Constraints: None

Use_Constraints: None

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_Facsimile_Telephone: 301 713 9395

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:

Logical_Consistency_Report:

All lines originate and end at TWEB anchor points and are drawn individually to each point (if any) along the route. The lines do not intersect other lines at common anchor points.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: National Weather Service

Publication_Date: 09052002

Title: NATIONAL WEATHER SERVICE INSTRUCTION 10-805

Geospatial_Data_Presentation_Form: document

Other_Citation_Details: See Appendix A

Type_of_Source_Media: online

Source_Citation_Abbreviation: NWSI 10-805

Source_Information:

Source_Citation:

Citation_Information:

Originator: g.c.r. & associates, inc.

Title: Airport Locations

Geospatial_Data_Presentation_Form: online

Other_Citation_Details:

Data derived from the National Flight Data Center (FAA, 800 Independence Avenue, S. W., Room 634, Washington, D.C. 20591

Online_Linkage: <http://www.gcr1.com/5010web/>

Process_Step:

Process_Description:

From a database containing TWEB route numbers, and the anchor points for the routes, a line shapefile is written where each route record contains the lines connecting each anchor point. For routes with one anchor point a circle of 25 miles is created.

Source_Used_Citation_Abbreviation: NWSI 10-805

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: 20910

Country: USA

Contact_Voice_Telephone: 301 713 0763 x 104

Contact_Facsimile_Telephone: 301 713 9395

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: String

Point_and_Vector_Object_Count: 218

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001

Longitude_Resolution: 0.000001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378206.400000

Denominator_of_Flattening_Ratio: 294.978698

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: TWEB Routes

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: ROUTE

Attribute_Definition: TWEB Route Number

Attribute:

Attribute_Label: ANCHOR_IDS

Attribute_Definition: String with TWEB anchor points

Distribution_Information:

Distributor:

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: 20910

Country: USA

Contact_Voice_Telephone: 301 713 0763 x 104

Contact_Facsimile_Telephone: 301 713 9395

Contact_Electronic_Mail_Address: ira.graffman@noaa.gov

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 0.142

Metadata_Reference_Information:

Metadata_Date: 20021206

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: 20910

Country: USA

Contact_Voice_Telephone: 301 713 0763 x 104

Contact_Facsimile_Telephone: 301 713 9395

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