2026-05-31T00:06:52Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/ARCSS302.0012026-03-03T21:04:09Zv0_otherv0_allacadis
ARCSS302.001High-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USAManley, W. F., Lestak, L. R., Tweedie, C. & Maslanik, J.High-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USA2005-02-01Boulder, Colorado USANSIDC: National Snow and Ice Data Center1falsehttp://nsidc.org/data/docs/arcss/arcss302/ARCSS302InvestigatorWilliamF.Manley450 UCBUniversity of ColoradoBoulderCOInvestigatorLeanneR.LestakUniversity of Colorado216 UCBBoulderCO80309-0216USAInvestigatorCraigTweediectweedie@utep.edu500 University Blvd.Biology Bldg., Room 226El PasoTX79968-0513USAInvestigatorJimMaslanikEARTH SCIENCELand SurfaceTopographyContours EARTH SCIENCESpectral/EngineeringRadarRadar Imagery RADAR IMAGERYEARTH SCIENCESpectral/EngineeringRadarRadar Reflectivity RADAR REFLECTIVITYEARTH SCIENCELand SurfaceTopographyTerrain Elevation TERRAIN ELEVATIONEARTH SCIENCELand SurfaceTopographyTopographical Relief EARTH SCIENCELand SurfaceTopographyTopographic Effects TOPOGRAPHIC EFFECTSGeoscientific InformationARCSS Data Coordination CenterAspectBarrowCartographyContoursDEMs Alaska-projectDEMs-projectDigital Elevation ModelDigital MappingDigital Surface ModelDigital Terrain ModelGISIFSARMappingMapsNSIDC > National Snow and Ice Data CenterOPP0224071ORRI > Orthorectified Radar ImageryRadarReliefSAR imagerySlopeSurface ElevationTerrain ElevationTopographic MapsRADARRadio Detection and RangingSARSynthetic Aperture RadarAIRCRAFT2002-07-272002-07-29complete70.8624671.47278-157.47633-155.39483ContinentNorth AmericaUnited States Of AmericaAlaska5 m5 m1.25 m1.25 mQuality 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.Data are restricted to NSF-funded investigators only. To place an order, visit the NSIDC catalog description (http://nsidc.org/data/arcss302.html). Click 'Register for Data' and read the license agreement. Scroll to the end of the agreement to accept it. You will be directed to a registration form; please complete this and provide your most recent NSF grant number. NSIDC User Services will verify the grant number and contact you soon with an order confirmation.EnglishACADISThe Advanced Cooperative Arctic Data & Information Servicensidc.orgData Center ContactACADISUser Servicesnsidc@nsidc.org-303-492-6199University of Colorado449 UCBBoulderCO80309-0449USADVD16.5 GBBinaryDVD16.5 GBGeoTIFFDVD16.5 GBGridDVD16.5 GBShapefileIntermap 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.This product set contains high-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) and Barrow Triangle (156.13 - 157.08 deg W, 71.14 - 71.42 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 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 and ArcInfo grid 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); a quarter-quadrangle index map for the 26 IFSAR tiles (ESRI Shapefile format); and a simple polygon layer of the extent of the Barrow Peninsula (ESRI Shapefile format).
Unmodified IFSAR data comprise 26 data tiles across UTM zones 4 and 5. The DSM and DTM tiles (5 m resolution) are provided in floating-point binary format with header and projection files. The ORRI tiles (1.25 m resolution) are 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 through licensing only to National Science Foundation (NSF)-funded investigators. An NSF award number must be provided when ordering data. Contact NSIDC User Services at nsidc@nsidc.org to order the data, and include an NSF award number in the email.VIEW RELATED INFORMATIONhttp://nsidc.org/data/docs/arcss/arcss302/DocumentationGET DATAhttp://nsidc.org/data/barrow/eula_nsffunded_perpetual_fo.htmlOrder DataVIEW RELATED INFORMATIONhttp://nsidc.org/data/barrow/IFSAR & Quickbird Imagery and Related GIS Data for Barrow, Alaska, USAVIEW RELATED INFORMATIONhttp://instaar.colorado.edu/QGISL/barrow_high_res/Product Description at Quaternary GIS LaboratoryCEOS IDN DIFVERSION 9.92005-02-012026-03-03NSIDCVersion SummaryNSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceBasicNSIDCFull Dataset CitationManley, W. F., Lestak, L. R., Tweedie, C. & Maslanik, J. (2005). <i>High-Resolution Radar Imagery, Digital Elevation Models, and Related GIS Layers for Barrow, Alaska, USA</i>. (ARCSS302, Version 1). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. [<i><describe subset used if applicable></i>].NSIDCRetiredfalse