Entry_ID: G02166
Entry_Title: An Electronic Atlas of Great Lakes Ice Cover, Winters 1973-2002
Group: Personnel
   Role: Investigator
   First_Name: Raymond
   Middle_Name: A.
   Last_Name: Assel
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Depth/Thickness
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Extent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Growth/Melt
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Lake Ice
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Depth/Thickness
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Extent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Ice Growth/Melt
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Lake Ice
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: NOAA
Sensor_Name: VISUAL OBSERVATIONS
Group: Temporal_Coverage
   Start_Date: 1973-01-01
   Stop_Date: 2002-12-31
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 41
   Northernmost_Latitude: 49
   Westernmost_Longitude: -93
   Easternmost_Longitude: -75
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: UNITED STATES OF AMERICA
   Location_Subregion2: GREAT LAKES
End_Group
Data_Set_Language: English
Originating_Center: DOC/NOAA/NESDIS/NCDC
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: NOAA @ NSIDC > National Oceanic and Atmospheric Administration
   Data_Center_URL: http://nsidc.org/noaa/
   Group: Personnel
      Role: Data Center Contact
      First_Name: NOAA
      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
End_Group
Group: Summary

   This dataset is distributed by the National Oceanic and Atmospheric 
   Administration (NOAA) Great Lakes Environmental Research Laboratory (GLERL). 
   The atlas contains data on over 1200 digitized Great Lakes ice charts for 
   winters from 1973 to 2002 and three types of analysis products.

   The first analysis product includes ice charts of the following: dates of the 
   first reported ice, dates of the last reported ice, and ice duration for each 
   winter, as well as, the maximum, minimum and average ice cover concentrations.

   The second analysis product is a 30-year set of annual daily ice cover time 
   series. The daily time series was used to create: 1) computer animations of 
   spatial patterns of ice cover for each winter, 2) line plots of lake averaged 
   ice cover for each lake over the 30 winters.

   The third analysis product is weekly statistics. There are weekly ice charts 
   and grids of: maximum, 3rd quartile, median, 1st quartile, and minimum ice 
   cover concentrations for the 30-winter base period. The weekly statistics are 
   based on the original ice chart data set and not on the daily time series.

   NSIDC does not distribute this data set. Please contact the investigator or 
   data compiler to acquire these data, and for further information about these 
   data. Data Compiler: NOAA 
   Great Lakes Environmental Research Laboratory

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://www.glerl.noaa.gov/data/ice/atlas/
   Description: An Electronic Atlas of Great Lakes Ice Cover Winters: 1973 - 2002
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2005-01-21
Last_DIF_Revision_Date: 2013-08-05
DIF_Revision_History:  Added spatial coverage. No QC needed.