Entry_ID: NSIDC-0393
Entry_Title: Arctic Sea Ice Freeboard and Thickness
Group: Data_Set_Citation
   Dataset_Creator: Yi, Donghui, Jay Zwally
   Dataset_Title: Arctic Sea Ice Freeboard and Thickness
   Dataset_Release_Date: 2009-04-30
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0393.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Donghui
   Last_Name: Yi
   Group: Contact_Address
      Address: NASA Goddard Space Flight Center
      Address: Cryospheric Sciences Branch
      City: Greenbelt
      Province_or_State: MD
      Postal_Code: 20771
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: H. Jay
   Last_Name: Zwally
   Email: Jay.Zwally@nasa.gov
   Phone: 1 301 614-5643 
   Fax: 1 301  614-5644 
   Group: Contact_Address
      Address: NASA/Goddard Space Flight Center
      Address: Laboratory for Hydrospheric Processes
      Address: Laboratory for Hydrospheric Processes
      Address: NASA/Goddard Space Flight Center
      Address: Code 971
      City: Greenbelt
      Province_or_State: MD
      Postal_Code: 20771
      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: Sea Ice
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Sea Ice
   Variable_Level_1: Ice Depth/Thickness
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Oceans
   Term: Sea Ice
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Oceans
   Term: Sea Ice
   Variable_Level_1: Ice Depth/Thickness
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: Arctic Sea Ice
Keyword: GLAS
Keyword: ICESat
Keyword: Ice Thickness
Keyword: Sea Ice
Keyword: Special Sensor Microwave/Imager
Keyword: SSM/I
Sensor_Name: GLAS > Geoscience Laser Altimeter System
Sensor_Name: SSM/I > Special Sensor Microwave/Imager
Source_Name: DMSP > Defense Meteorological Satellite Program
Source_Name: ICESAT > Ice, Cloud and Land Elevation Satellite
Source_Name: SATELLITES
Group: Temporal_Coverage
   Start_Date: 2005-10-21
   Stop_Date: 2005-11-24
End_Group
Group: Temporal_Coverage
   Start_Date: 2006-02-22
   Stop_Date: 2006-03-27
End_Group
Group: Temporal_Coverage
   Start_Date: 2006-05-24
   Stop_Date: 2006-06-26
End_Group
Group: Temporal_Coverage
   Start_Date: 2006-10-25
   Stop_Date: 2006-11-27
End_Group
Group: Temporal_Coverage
   Start_Date: 2007-03-12
   Stop_Date: 2007-04-14
End_Group
Group: Temporal_Coverage
   Start_Date: 2007-10-02
   Stop_Date: 2007-11-05
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 65
   Northernmost_Latitude: 86
   Westernmost_Longitude: -180
   Easternmost_Longitude: 180
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: ARCTIC
End_Group
Group: Data_Resolution
   Latitude_Resolution: 70 m
   Longitude_Resolution: 70 m
   Temporal_Resolution: 1 day
End_Group
Project: ICESAT > Ice, Cloud and Land Elevation Satellite
Data_Set_Language: English
Originating_Center: NSIDC_DAAC
Group: Data_Center
   Data_Center_Name: NSIDC_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: 8 MB
   Distribution_Format: Binary
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 932 MB
   Distribution_Format: ASCII Text
End_Group
Group: Reference

   Zwally, H. J., D. Yi, R. Kwok, and Y. Zhao. 2008. ICESat Measurements of Sea 
   Ice Freeboard and Estimates of Sea Ice Thickness in the Weddell Sea. Journal 
   of Geophysical Research 113(C02S15), doi: 10.1029/2007JC004284.

   Warren, S. G., I. G. Rigor, N. Untersteiner, V. F. Radionov, N. N. Bryazgin, 
   Y. I. Aleksandrov, and R. Colony. 1999. Snow Depth on Arctic Sea Ice. Journal 
   of Climate 12: 1814 - 1829.

   Gloersen, P., W. J. Campbell, D. J. Cavalieri, J. C. Comiso, C. L. Parkinson, 
   and H. J. Zwally. 1992. Arctic and Antarctic Sea Ice, 1978-1987: Satellite 
   Passive-Microwave Observations and Analysis. NASA SP-511, 290 pp. Picot, N., 
   K. Case, S. Desai, and P. Vincent. 2003. AVISO and PODAAC User Handbook, IGDR 
   and GDR Jason Products. SMM-MU-M5-OP-13184-CN (AVISO),  JPL D-21352 (PO.DAAC).

   Stackpole, J. D. 1994. The WTO Format for the Storage of Weather Product 
   Information and the Exchange of Weather Product Message in Gridded Binary 
   Form. NOAA Office Note 388.

   Dorandeu, J. and P. Y. Le Traon. 1999. Effects of Global Mean Atmospheric 
   Pressure Variations on Mean Sea Level Changes from TOPEX/POSEIDON. Journal of 
   Atmospheric and Oceanic Technology, 16(9), 1279-1283.

   Kwok, R., and G. F. Cunningham. 2008. ICESat Over Arctic Sea Ice: Estimation 
   of Snow Depth and Ice Thickness. Journal of Geophysical Research 113(C08010), 
   doi: 10.1029/2008JC004753.

End_Group
Group: Summary

   This data set provides measurements of sea ice freeboard and sea ice thickness 
   for the Arctic region. The data were acquired from the Ice, Cloud, and land 
   Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) 
   instrument, the Special Sensor Microwave/Imager (SSM/I), and climatologies of 
   snow and drift of ice. The data span six GLAS Release-28 campaigns, laser 3D 
   through 3I, from 21 October 2005 to 05 November 2007. Data parameters include 
   sea ice freeboard and thickness measured in meters.  The data are provided in 
   three formats: ASCII track data derived from binary track data, binary gridded 
   polar stereographic data derived from ASCII gridded Polar Stereo files, and 
   Portable Network Graphic (PNG) image files. Also included are mask files used 
   in preparation of the  image  files, a Mapx grid definition file, and grid 
   cell center latitude and longitude files. The ASCII track data vectors of 
   position and ice thickness have a resolution of about 170 meters in the 
   along-track direction. The binary gridded polar stereographic data have a 
   resolution of 25 km. The data set is approximately 940 megabytes.  The data 
   are available via FTP.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/icesat/index.html
   Description: ICESat/GLAS Data at NSIDC
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://icesat.gsfc.nasa.gov/
   Description: ICESat/GLAS Web site at NASA Goddard Space Flight Center
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://icesat.gsfc.nasa.gov/icesat/
   Description: ICESat/GLAS Web site at NASA Goddard Space Flight Center
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://glas.wff.nasa.gov/
   Description: ICESat/GLAS Web site at NASA Wallops Flight Facility
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2009-04-30
Last_DIF_Revision_Date: 2012-02-13
DIF_Revision_History: Fixed temporal resolution for EDB.