Entry_ID: NSIDC-0478
Entry_Title: MEaSUREs Greenland Ice Sheet Velocity Map from InSAR Data
Group: Data_Set_Citation
   Dataset_Creator: Joughin, I., B. Smith, I. Howat, and T. Scambos.
   Dataset_Title: MEaSUREs Greenland Ice Sheet Velocity Map from InSAR Data
   Dataset_Release_Date: 2010-10-01
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0478.html
   Dataset DOI: http://dx.doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0478.001
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Ian
   Last_Name: Joughin
   Email: ian@apl.washington.edu
   Group: Contact_Address
      Address: University of Washington
      Address: Applied Physics Laboratory
      Address: 1013 NE 40th Street
      Address: Box 355640
      City: Seattle
      Province_or_State: WA
      Postal_Code: 98105
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Ben
   Last_Name: Smith
   Group: Contact_Address
      Address: University of Washington
      Address: Polar Science Center Applied Physics Laboratory
      Address: University of Washington
      Address: Department of Earth and Space Sciences
      City: Seattle
      Province_or_State: WA
      Postal_Code: 98195
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Ian
   Last_Name: Howat
   Group: Contact_Address
      Address: Ohio State University
      Address: Byrd Polar Research Center
      Address: Scott Hall Room 108
      Address: 1090 Carmack Road
      City: Columbus
      Province_or_State: Ohio
      Postal_Code: 43210
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Ted
   Last_Name: Scambos
   Email: scambos@nsidc.org
   Group: Contact_Address
      Address: University of Colorado
      Address: Cooperative Institute for Research in Environmental Science
      Address: National Snow and Ice Data Center
      Address: CIRES,  449 UCB
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   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
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Glacier Mass Balance/Ice Sheet Mass Balance
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Glacier Motion/Ice Sheet Motion
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Velocity
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Glacier Motion/Ice Sheet Motion
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Glaciers/Ice Sheets
   Variable_Level_1: Ice Sheets
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Velocity
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: Greenland
Keyword: Greenland Ice Cap
Keyword: Ice Sheet
Keyword: ICE VELOCITY DATA
Keyword: RADARSAT-1
Sensor_Name: SAR > Synthetic Aperture Radar
Source_Name: RADARSAT-1
Group: Temporal_Coverage
   Start_Date: 2008-01-01
   Stop_Date: 2009-12-31
End_Group
Group: Temporal_Coverage
   Start_Date: 2007-01-01
   Stop_Date: 2008-12-31
End_Group
Group: Temporal_Coverage
   Start_Date: 2006-12-18
   Stop_Date: 2007-04-15
End_Group
Group: Temporal_Coverage
   Start_Date: 2005-12-13
   Stop_Date: 2006-04-20
End_Group
Group: Temporal_Coverage
   Start_Date: 2000-09-03
   Stop_Date: 2001-01-24
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 60
   Northernmost_Latitude: 83
   Westernmost_Longitude: -75
   Easternmost_Longitude: -14
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: GREENLAND
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: ARCTIC
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: POLAR
End_Group
Project: MEASURES > Making Earth System Data Records for Use in Research Environments
Data_Set_Language: English
Originating_Center: ASF
Group: Data_Center
   Data_Center_Name: NASA DAAC > NASA DAAC at the National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org/daac/index.html
   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: 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: Distribution
   Distribution_Media: FTP
   Distribution_Size: 564 MB
   Distribution_Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 750 MB
   Distribution_Format: Binary
End_Group
Group: Reference

   Joughin, I. 1995. Estimation of Ice-Sheet Topography and Motion Using 
   Interferometric Synthetic Aperture Radar. (PhD Dissertation, University of 
   Washington). 

   Joughin, I. 2002. Ice-Sheet Velocity Mapping: A Combined Interferometric and 
   Speckle-Tracking Approach. Annals of Glaciology 34: 195-201. 
   doi:10.3189/172756402781817978.

   Joughin, I., S. Tulaczyk, R. Bindschadler, and S. F. Price. 2002. Changes in 
   West Antarctic Ice Stream Velocities: Observation and Analysis. Journal of 
   Geophyscial Research-Solid Earth, 107(B11), 2289. doi:10.1029/2001JB001029.

   Joughin, I., W. Abdalati and M. Fahnestock. 2004. Large Fluctuations in Speed 
   on Greenland's Jakobshavn Isbrae Glacier. Nature, 432(7017): 608-610. 
   doi:10.1038/nature03130.

   Joughin, I., B. Smith, I. M. Howat, T. Scambos, and T. Moon. 2010. Greenland 
   Flow Variability from Ice-Sheet-Wide Velocity Mapping. Journal of Glaciology, 
   56 (197), pp. 415-430, doi: 10.3189/002214310792447734.

   Moon, T. and I. Joughin 2008. Retreat and Advance of Greenland Tidewater 
   Glaciers from 1992 to 2007. Journal of Geophysical Research Earth Surface, 
   113: F02022, doi:10.1029/2007JF000927. Rignot, E. and P. Kanagaratnam. 2006. 
   Changes in the Velocity Structure of the Greenland Ice Sheet. Science, 
   311(5763): 986-990. doi:10.1126/science.1121381.

End_Group
Group: Summary

   This data set, part of the NASA Making Earth System Data Records for Use in 
   Research Environments (MEaSUREs) program, provides annual ice-sheet-wide 
   velocity maps for Greenland, derived using Interferometric Synthetic Aperture 
   Radar (InSAR) data from the RADARSAT-1 satellite. The data set currently 
   contains ice velocity data for the winter of 2000-2001 and 2005-2006, 
   2006-2007, and 2007-2008 acquired from RADARSAT-1 InSAR data from the Alaska 
   Satellite Facility (ASF), and a 2008-2009 mosaic derived from the Advanced 
   Land Observation Satelitte (ALOS) and TerraSAR-X data. 

   Data are available via FTP, in 4-byte big-endian Institute of Electrical and 
   Electronics Engineers (IEEE) floating point and GeoTIFF (.tif) formats.

   Note: Although this data set has been screened for 
   anomalously large errors, at this stage they are Version 1 products and some 
   significant errors may persist (>20 m/yr). In addition, these data are 
   considered provisional pending a review by the MEaSUREs program. Once the data 
   have been reviewed, this statement will be removed.

End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2010-10-01
Last_DIF_Revision_Date: 2014-08-18
DIF_Revision_History: Changed publisher to NASA DAAC at NSIDC.