Entry_ID: NSIDC-0321
Entry_Title: Global EASE-Grid 8-day Blended SSM/I and MODIS Snow Cover
Group: Data_Set_Citation
   Dataset_Creator: Brodzik, M., R. Armstrong, and M. Savoie. 
   Dataset_Title: Global EASE-Grid 8-day Blended SSM/I and MODIS Snow Cover
   Dataset_Release_Date: 2007-12-05
   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-0321.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Mary J.
   Last_Name: Brodzik
   Email: brodzik@nsidc.org
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      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
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Richard
   Last_Name: Armstrong
   Email: rlax@nsidc.org
   Phone: 1 303 492-6199 
   Fax: 1 303  492-2468 
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: National Snow and Ice Data Center
      Address: CIRES 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: Colorado
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Richard
   Last_Name: Armstrong
   Email: rlax@nsidc.org
   Phone: 1 303 492-6199 
   Fax: 1 303  492-2468 
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: National Snow and Ice Data Center
      Address: CIRES 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: Colorado
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Matthew
   Last_Name: Savoie
   Email: savoie@nsidc.org
   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: 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 Cover
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Water Equivalent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Water Equivalent
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: Antarctic
Keyword: Arctic
Keyword: Ease
Keyword: EASE-Grid
Keyword: Gridded Data
Keyword: MODIS
Keyword: Northern Hemisphere
Keyword: Snow Cover
Keyword: Snow Water Equivalent
Keyword: Southern Hemisphere
Keyword: Special Sensor Microwave/Imager
Keyword: SSM/I
Sensor_Name: MODIS > Moderate-Resolution Imaging Spectroradiometer
Sensor_Name: SSM/I > Special Sensor Microwave/Imager
Source_Name: DMSP > Defense Meteorological Satellite Program
Source_Name: TERRA > Earth Observing System, TERRA (AM-1)
Group: Temporal_Coverage
   Start_Date: 2000-03-05
   Stop_Date: 2008-02-01
End_Group
Data_Set_Progress: in work
Group: Spatial_Coverage
   Southernmost_Latitude: -90
   Northernmost_Latitude: 0
   Westernmost_Longitude: -180
   Easternmost_Longitude: 180
End_Group
Group: Spatial_Coverage
   Southernmost_Latitude: 0
   Northernmost_Latitude: 90
   Westernmost_Longitude: -180
   Easternmost_Longitude: 180
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: NORTHERN HEMISPHERE
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: SOUTHERN HEMISPHERE
End_Group
Group: Data_Resolution
   Latitude_Resolution: 25 km
   Longitude_Resolution: 25 km
End_Group
Group: Data_Resolution
   Latitude_Resolution: 25 km
   Longitude_Resolution: 25 km
   Temporal_Resolution: 8 days
End_Group
Project: EOSDIS > Earth Observing System Data Information System
Data_Set_Language: English
Originating_Center: NSIDC_DAAC
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: 12 - 40 KB
   Distribution_Format: PNG
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 85 - 104 MB
   Distribution_Format: NetCDF
End_Group
Group: Reference

   Armstrong, R. L., and M. J. Brodzik. 2005. Northern Hemisphere EASE-Grid 
   Weekly Snow Cover and Sea Ice Extent Version 3. Boulder, Colorado USA: 
   National Snow and Ice Data Center. Digital media.

   Armstrong, R. L., M. J. Brodzik, J. R. Wang, M. H. Savoie, O. Frauenfeld, T. 
   Zhang. 2004. Solutions to the Snow Cover Mapping Anomaly Over the Tibetan 
   Plateau (poster). EOS, Transactions, American Geophysical Union, 85(47), Fall 
   Meeting Supplement Abstract C31A-0282. Armstrong, R. L. and M. J. Brodzik. 
   2002. Hemispheric-scale Comparison and Evaluation of Passive Microwave Snow 
   Algorithms. Annals of Glaciology, 34:38-44. 

   Armstrong, R.L. and M.J. Brodzik. 2001. Recent Northern Hemisphere Snow 
   Extent: A Comparison of Data Derived from Visible and Microwave Sensors. 
   Geophysical Research Letters, 23(19):3673-3676.

   Brodzik, M. J., R. L. Armstrong, K. Knowles, M. H. Savoie. 2005. The Effect of 
   Sensor Differences in Deriving Long-Term Trends from Satellite Passive 
   Microwave Snow Extent and Snow Water Equivalent. EOS, Transactions, American 
   Geophysical Union, 86(52), Fall Meeting Supplement Abstract U21A-0804.

   Brodzik, M. J. and K. W. Knowles. 2002. 'EASE-Grid: A Versatile Set of 
   Equal-area Projections and Grids.' Discrete Global Grids National Center for 
   Geographic Information & Analysis. 
   http://www.ncgia.ucsb.edu/globalgrids-book/ease_grid/.

   Chang, A. T. C., J. L. Foster, D. K. Hall. 1996. Effects of Forest on the Snow 
   Parameters Derived from Microwave Measurements During the BOREAS Winter Field 
   Campaign. Hydrological Processes, 10:1565-1574.

   Chang, A. T. C., J. L. Foster, D. K. Hall. 1987. Nimbus-7 SMMR Derived Global 
   Snow Cover Parameters. Annals of Glaciology, 9:39-44.

   Derksen, C. and M. MacKay. 2006. The Canadian Boreal Snow Water Equivalent 
   Band. Atmosphere-Ocean, 44(3):305-320.

   Knowles, K. 2004. EASE-Grid Land Cover Classifications from Boston University 
   MODIS/Terra Land Cover Data. Boulder, Colorado USA: National Snow and Ice Data 
   Center. http://dx.doi:10.5067/J0CJG7RZW3IJ.

   Nagler, Thomas, and H. Rott 1992. Development and Intercomparisons of Snow 
   Mapping Algorithms Based on SSM/I Data. IEEE Proceedings International 
   Geoscience and Remote Sensing Symposium 1992, Houston, N.p., 812-814.

   Savoie, M. H., J. Wang, M. J. Brodzik, R. L. Armstrong. 2007. Improved Snow 
   Cover Retrievals from Satellite Passive Microwave Data Over the Tibet Plateau: 
   The Need for Atmospheric Corrections Over High Elevations (poster). EOS, 
   Transactions, American Geophysical Union, 88(52), Fall Meeting Supplement 
   Abstract C23A-0942.

End_Group
Group: Summary

   This data set comprises global, 8-day Snow-Covered Area (SCA) and Snow Water 
   Equivalent (SWE) data from 2000 through 2008. Global SWE data are derived from 
   the Special Sensor Microwave Imager (SSM/I) and are enhanced with MODIS/Terra 
   Snow Cover 8-Day Level 3 Global 0.05 degree Climate Modeling Grid (CMG) data. 
   Global data are gridded to the Northern and Southern 25 km Equal-Area Scalable 
   Earth Grids (EASE-Grids). These data are suitable for continental-scale 
   time-series studies of snow cover and snow water equivalent. The data are in 
   netCDF data files and PNG browse image files available via FTP.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/ease/
   Description: All About EASE-Grid
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0032.html
   Description: DMSP SSM/I Pathfinder daily EASE-Grid Brightness Temperatures
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/mod10c2.html
   Description: MODIS/Terra snow cover 8-day L3 global 0.05deg CMG V005
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/nsidc-0046.html
   Description: Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 3
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2007-12-05
Last_DIF_Revision_Date: 2014-11-18
DIF_Revision_History:  Small change to the references. No QC needed.