Entry_ID: NSIDC-0372
Entry_Title: Hydrologic Outlets of the Greenland Ice Sheet
Group: Data_Set_Citation
   Dataset_Creator: Lewis, S. 
   Dataset_Title: Hydrologic Outlets of the Greenland Ice Sheet
   Dataset_Release_Date: 2009-06-07
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0372.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Sarah
   Last_Name: Lewis
   Email: sarahlewis@berkeley.edu
   Group: Contact_Address
      Address: UCLA Berkeley
      Address: Geography Department
      Address: 122 Mulford Hall #3114
      City: Berkeley
      Province_or_State: CA
      Postal_Code: 94720-3114
      Country: USA
   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: Snow/Ice
   Variable_Level_1: Snow Melt
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Melt
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Surface Water
   Variable_Level_1: Discharge/Flow
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Surface Water
   Variable_Level_1: Drainage
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Surface Water
   Variable_Level_1: Runoff
End_Group
ISO_Topic_Category: Inland Waters
Keyword: Drainage
Keyword: Greenland
Keyword: Ice Sheet
Keyword: PARCA
Keyword: Snow Melt
Sensor_Name: ETM+ > Enhanced Thematic Mapper Plus
Source_Name:   > Google Earth
Source_Name: LANDSAT-7
Source_Name: SATELLITES
Group: Temporal_Coverage
   Start_Date: 1991-01-01
   Stop_Date: 2000-12-31
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 59.58015
   Northernmost_Latitude: 85.02649
   Westernmost_Longitude: -80.79734
   Easternmost_Longitude: -8.96739
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: GREENLAND
End_Group
Project: NSIDC_CCAWS > Cryospheric Change Analysis Web Services
Project: PARCA > Program in Arctic Regional Climate Assessment
Data_Set_Language: English
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: 1 - 120 KB
   Distribution_Format: ESRI Shapefiles (.shp, .shx, .dbf, and .prj)
End_Group
Group: Reference

   Lewis, Sarah, Laurence Smith. Hydrologic Drainage of the Greenland Ice Sheet. 
   Hydrological Processes, 2009. DOI: 10.1002/hyp.7343

End_Group
Group: Summary

   The Hydrologic Outlets of the Greenland Ice Sheet data set contains GIS point 
   shapefiles that include 891 observed and potential hydrologic outlets of the 
   Greenland Ice Sheet, as identified by Lewis and Smith (2009), using satellite 
   imagery. There are 460 observed hydrologic outlets that include proglacial 
   streams and rivers emerging from the ice sheet (length scale >1 km), 
   proglacial lakes touching the ice edge or clearly connected to it via streams 
   or rivers (length scale >3 km), and sediment-rich plumes exiting tidewater 
   glaciers into fjords. Also, there are 431 potential hydrologic outlets that 
   include point locations with release of meltwater from fjords without obvious 
   sediment discharge, as well as locations where the ice sheet directly connects 
   to the ocean that cannot be proven to release meltwater.

   Meltwater features along the entire edge of the ice sheet were mapped via 
   photo interpretation of GoogleEarth and Landsat ETM+ 15 m panchromatic data. 
   The exact acquisition dates of the imagery are not available; however, owing 
   to the light and relatively snow-free conditions seen in the GoogleEarth and 
   Landsat images, it is presumed that they were taken during the summer season. 
   Neither Landsat or GoogleEarth images were available for a section of ice 
   sheet within the northern Tunu region; therefore, that region was excluded 
   from the study. This excluded area represents approximately 0.9 percent of the 
   ice sheet perimeter. Data are available via FTP, and can be read in any GIS 
   software. The following journal article provides documentation for this data 
   set: Lewis, Sarah and Laurence Smith. 2009. Hydrologic Drainage of the 
   Greenland Ice Sheet. Hydrological Processes doi: 10.1002/hyp.7343. This 
   journal article can be accessed from the Documentation link at the top of this 
   Web page.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/parca/index.html
   Description: PARCA Product Web Site
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2009-06-07
Last_DIF_Revision_Date: 2014-10-02
DIF_Revision_History: Added PARCA to keywords.