A Half-Century of Change in Arctic Alaskan Shrubs: A Photographic-Based Assessment

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: M. Sturm and C. Racine
Publication_Date: 20050606
Title: A Half-Century of Change in Arctic Alaskan Shrubs: A Photographic-Based Assessment
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Boulder, CO
Publisher: National Snow and Ice Data Center (NSIDC)
Other_Citation_Details:
Online_Linkage: http://nsidc.org/data/arcss130.html
Description:
Abstract:
In this study, the locations of 193 old aerial photographs of northern Alaskan landscapes were rephotographed and assessed for changes in vegetation. The original photographs were taken over northern Alaska between 1948 and 1951, and the new photographs were taken between 1999 and 2003. The region covered by the original and repeat photographs stretches from the southern extent of the Brooks Range in the south to the Coastal Plain in the north, and from the Chukchi Sea in the west to the Canning River in the east. Approximate coordinates are 68°N to 70°N and 145°W to 165°W. The original photographs were taken by the U.S. military as part of geologic reconnaissance and exploration, and the method used to acquire them was to fly both sides of a river valley while photographing the river and the facing valley slopes. Of the several thousand original photographs, only a fraction were repeated for the purpose of assessing vegetation change. Repeat photographs were selected for geographic coverage and to produce the greatest likelihood of detecting vegetation change. The original and repeat photographs were then scanned and stored in TIFF format. Individual image file sizes range from 5 to 60 MB each, and the total file size for the data set is 11 GB. The photographs are distributed on a set of three DVDs. The images should not be published without the consent of the investigators.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Sturm, M., C. Racine, and K. Tape. 2001. Increasing shrub abundance in the Arctic. Nature 411: 546-547.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19480101
Ending_Date: 19511231
Currentness_Reference:Unknown
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19990101
Ending_Date: 20031231
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -165.0
East_Bounding_Coordinate: -145.0
North_Bounding_Coordinate: 70.0
South_Bounding_Coordinate: 68.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION COVER
Theme_Keyword: AIRCRAFT
Theme_Keyword: HELICOPTER
Theme_Keyword: CAMERAS
Theme_Keyword: NSF/OPP > OFFICE OF POLAR PROGRAMS, NATIONAL SCIENCE FOUNDATION
Theme_Keyword: Alaska
Theme_Keyword: Alaskan North Slope
Theme_Keyword: Anaktuvuk River
Theme_Keyword: Arcss Data Coordination Center
Theme_Keyword: Arcss130
Theme_Keyword: Atigun Gorge
Theme_Keyword: Ayiyak River
Theme_Keyword: Canning River
Theme_Keyword: Chandler River
Theme_Keyword: Colville River
Theme_Keyword: Horseshoe/castle
Theme_Keyword: Ivishak River
Theme_Keyword: Kokolik River
Theme_Keyword: Kugururok River
Theme_Keyword: Kuparuk River
Theme_Keyword: Nanushuk River
Theme_Keyword: Nimiuktuk River
Theme_Keyword: Northern Alaska
Theme_Keyword: Nsidc > National Snow And Ice Data Center
Theme_Keyword: Oolamnagavik River
Theme_Keyword: Opp 0119374
Theme_Keyword: Sag/lupine Confluence
Theme_Keyword: Sagwon
Theme_Keyword: Sheba
Theme_Keyword: The Notch
Theme_Keyword: Upper Colville River
Theme_Keyword: Upper Killik River
Theme_Keyword: Upper Nigu River
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENVIRONMENT
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > ARCTIC
Place_Keyword: GEOGRAPHIC REGION > POLAR
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA
Access_Constraints: Not Available
Use_Constraints:
The images should not be published without the consent of the investigators.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: NSIDC USER SERVICES
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303) 492-6199
Contact_Facsimile_Telephone: +1 (303) 492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NSIDC > National Snow and Ice Data Center
Contact_Person: NSIDC USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303) 492-6199
Contact_Facsimile_Telephone: +1 (303) 492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NSIDC_ARCSS > Arctic System Science Data Coordination Center
Contact_Person: NSIDC ARCSS USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303) 492-6199
Contact_Facsimile_Telephone: +1 (303) 492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
Resource_Description: ARCSS130
Resource_Description: ARCSS130
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF > Tagged Image File Format
Transfer_Size: 11 GB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org
Access_Instructions:
DATA CENTER URL
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/arcss/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20050606
Metadata_Review_Date: 20120513
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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