Entry_ID: ARCSS303
Entry_Title: Reduced-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USA
Group: Data_Set_Citation
   Dataset_Creator: Manley, W. F., L. R. Lestak, C. Tweedie, and J. Maslanik. 
   Dataset_Title: Reduced-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USA
   Dataset_Release_Date: 2005-02-01
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/arcss303.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: William
   Middle_Name: F.
   Last_Name: Manley
   Group: Contact_Address
      Address:  Institute of Arctic and Alpine Research (INSTAAR)
      Address: 450 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Leanne
   Middle_Name: R.
   Last_Name: Lestak
   Group: Contact_Address
      Address: Cooperative Institute for Research in Environmental Sciences (CIRES)
      Address: University of Colorado
      Address: 216 UCB
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0216
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Craig
   Last_Name: Tweedie
   Email: ctweedie@utep.edu
   Group: Contact_Address
      Address: University of Texas at El Paso
      Address: Department of Biology
      Address: 500 University Blvd.
      Address: Biology Bldg., Room 226
      City: El Paso
      Province_or_State: TX
      Postal_Code: 79968-0513
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Jim
   Last_Name: Maslanik
   Email: nsidc@kryos.colorado.edu
   Phone: 1 303 492-6199 
   Fax: 1 303  492-2468 
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Jim
   Last_Name: Maslanik
   Email: nsidc@kryos.colorado.edu
   Phone: 1 303 492-6199 
   Fax: 1 303  492-2468 
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Contours
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Contours
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Terrain Elevation
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Terrain Elevation
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Topographical Relief
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Topographical Relief
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Topographic Effects
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Topography
   Variable_Level_1: Topographic Effects
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Radar
   Variable_Level_1: Radar Imagery
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Radar
   Variable_Level_1: Radar Imagery
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Radar
   Variable_Level_1: Radar Reflectivity
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Radar
   Variable_Level_1: Radar Reflectivity
End_Group
ISO_Topic_Category: Geoscientific Information
Keyword: ARCSS Data Coordination Center
Keyword: Aspect
Keyword: Barrow
Keyword: Cartography
Keyword: Contours
Keyword: Digital Elevation Model
Keyword: Digital Mapping
Keyword: Digital Surface Model
Keyword: Digital Terrain Model
Keyword: GIS
Keyword: IFSAR
Keyword: Mapping
Keyword: Maps
Keyword: NSIDC > National Snow and Ice Data Center
Keyword: OPP0224071
Keyword: ORRI > Orthorectified Radar Imagery
Keyword: Radar
Keyword: Relief
Keyword: SAR imagery
Keyword: Slope
Keyword: Surface Elevation
Keyword: Terrain Elevation
Keyword: Topographic Maps
Sensor_Name: RADAR > Radio Detection and Ranging
Sensor_Name: SAR > Synthetic Aperture Radar
Source_Name: AIRCRAFT
Group: Temporal_Coverage
   Start_Date: 2002-07-27
   Stop_Date: 2002-07-29
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 70.86246
   Northernmost_Latitude: 71.47278
   Westernmost_Longitude: -157.47633
   Easternmost_Longitude: -155.39483
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: UNITED STATES OF AMERICA
   Location_Subregion2: ALASKA
End_Group
Group: Data_Resolution
   Latitude_Resolution: 1.25 m
   Longitude_Resolution: 1.25 m
End_Group
Group: Data_Resolution
   Latitude_Resolution: 5 m
   Longitude_Resolution: 5 m
End_Group
Project: NSF/OPP > Division of Polar Programs, Antarctic Research, Glaciology
Group: Quality

   Quality checks were performed throughout all processing steps. Minimum and 
   maximum domain values were checked for each tile, for merged and mosaicked 
   products. Map extents of separate tiles are correct. Overlaps between tiles 
   are seamless and contain identical values; these were also spot checked for 
   the Barrow Triangle area. Value-added layers and their ranges were quality 
   checked; these value-added layers were also used to quality check the values 
   in the DSM.  The vertical accuracy of DSMs and DTMs is approximately +/- 1.0 m 
   or better root-mean-square-error (RMSE). Horizontal accuracy is +/- 2.5 m or 
   better RMSE for slopes less than 20 deg. Horizontal accuracy of ORRI data is 
   +/- 1.25 m or better RMSE for slopes less than 20 deg. These accuracy 
   statements depend on the sensor's view of the ground, and are applicable to 
   the height of the first surface return. These statements also assume the 
   surface is devoid of vegetation or continuous roof coverage in urban areas 
   (Intermap 2002).

    Accuracy statements are based on areas of moderate terrain. Diminished 
   accuracies are to be expected in areas of extreme terrain and dense 
   vegetation. The DSM and DTM contain some small (30 to 50 cm high) ripples or 
   'corn rows.' The Intermap data collection systems are very accurately 
   calibrated to control the constant differential phase error between the 
   antennae. The calibration ensures that data are within specification; however, 
   on flat terrain, very low-level artifacts are present from uncompensated 
   differential phase errors. Very small periodic DEM ripples in the range 
   dimension occurred at a consistent location in range and are continuous along 
   the strip. High-frequency variation (speckle) exists in both the imagery and 
   terrain data sets. The high-frequency variation in the DEM is a product of the 
   signal-to-noise ratio that decreases from the near to far range across the 
   track; therefore, the noise increases with the distance from the antenna. The 
   difference in noise between the near and far range of the strip can sometimes 
   be seen at the seam where DEMs from two strips are mosaicked together.

End_Group
Data_Set_Language: English
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: ACADIS > The Advanced Cooperative Arctic Data & Information Service
   Data_Center_URL: nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: ACADIS
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone:  303 492-6199 x
      Group: Contact_Address
         Address: University of Colorado
         Address: 449 UCB
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 805 MB
   Distribution_Format: Binary
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 805 MB
   Distribution_Format: Binary
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 805 MB
   Distribution_Format: ESRI Shapefiles (.shp, .shx, .dbf, and .prj)
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 805 MB
   Distribution_Format: ESRI Shapefiles (.shp, .shx, .dbf, and .prj)
End_Group
Group: Distribution
   Distribution_Media: CD-ROM
   Distribution_Size: 805 MB
   Distribution_Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 805 MB
   Distribution_Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
End_Group
Group: Reference

   Intermap Technologies, Inc. 2002. GLOBAL terrain product handbook and quick 
   start guide. Englewood, CO, USA: Intermap Technologies Inc.

   Tennant, J.K., T. Coyne, and E. DeCol. 2003. Star-3i interferometric synthetic 
   aperture radar (INSAR): more lessons learned on the road to commercialization. 
   Calgary, Alberta: Intermap Technologies Corp.

End_Group
Group: Summary

   This product set contains reduced-resolution Interferometric Synthetic 
   Aperture Radar (IFSAR) imagery and geospatial data for the Barrow Peninsula 
   (155.39 - 157.48 deg W, 70.86 - 71.47 deg N), for use in Geographic 
   Information Systems (GIS) and remote sensing software. The primary IFSAR data 
   sets were acquired by Intermap Technologies from 27 to 29 July 2002, and 
   consist of an Orthorectified Radar Imagery (ORRI), a Digital Surface Model 
   (DSM), and a Digital Terrain Model (DTM).

   Derived data layers include aspect, shaded relief, and slope-angle grids 
   (floating-point binary format), as well as a vector layer of contour lines 
   (ESRI Shapefile format). Also available are accessory layers compiled from 
   other sources: 1:250,000- and 1:63,360-scale USGS Digital Raster Graphic (DRG) 
   mosaic images (GeoTIFF format); 1:250,000- and 1:63,360-scale USGS quadrangle 
   index maps (ESRI Shapefile format); and a simple polygon layer of the extent 
   of the Barrow Peninsula (ESRI Shapefile format).

   The DSM and DTM data sets (20 m resolution) are provided in floating-point 
   binary format with header and projection files. The ORRI mosaic (5 m 
   resolution) is available in GeoTIFF format. FGDC-compliant metadata for all 
   data sets are provided in text, HTML, and XML formats, along with the Intermap 
   License Agreement and product handbook.  The baseline geospatial data support 
   education, outreach, and multi-disciplinary research of environmental change 
   in Barrow, which is an area of focused scientific interest. Data are available 
   via FTP and CD-ROM.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/barrow/
   Description: IFSAR & Quickbird Imagery and Related GIS Data for Barrow, Alaska, USA
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/barrow/
   Description: Imagery and Related GIS Data for Barrow, Alaska, USA
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://instaar.colorado.edu/QGISL/barrow_high_res/
   Description: Product Description at Quaternary GIS Laboratory
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2005-02-01
Last_DIF_Revision_Date: 2014-12-11
DIF_Revision_History: Fixed data citation.