Global EASE-Grid 8-day Blended SSM/I and MODIS Snow Cover
Entry ID: NSIDC-0321

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Summary
Abstract: This data set comprises global, 8-day Snow-Covered Area (SCA) and Snow Water Equivalent (SWE) data from 2000 through the most current processing. 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.

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Link: GET DATA > ECHO
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Link: VIEW RELATED INFORMATION
Description: All About EASE-Grid


Link: VIEW RELATED INFORMATION
Description: MODIS/Terra snow cover 8-day L3 global 0.05deg CMG V005


Link: VIEW RELATED INFORMATION
Description: DMSP SSM/I Pathfinder daily EASE-Grid Brightness Temperatures


Link: VIEW RELATED INFORMATION
Description: Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 3


Geographic Coverage
 N: 0.0 S: -90.0  E: 180.0  W: -180.0
 N: 90.0 S: 0.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: M. J. Brodzik, R. L. 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: National Snow and Ice Data Center (NSIDC)
Online Resource: http://nsidc.org/data/nsidc-0321.html


Temporal Coverage
Start Date: 2000-03-05


Location Keywords
GEOGRAPHIC REGION > NORTHERN HEMISPHERE
GEOGRAPHIC REGION > SOUTHERN HEMISPHERE


Data Resolution
Latitude Resolution: 25 km
Longitude Resolution: 25 km


Science Keywords
CRYOSPHERE >SNOW/ICE >SNOW COVER    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW WATER EQUIVALENT    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
DMSP >Defense Meteorological Satellite Program    [Information]
TERRA >Earth Observing System, TERRA (AM-1)    [Information]


Instrument
MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]
SSMI >Special Sensor Microwave/Imager    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]


Keywords
Antarctic
Arctic
Ease
EASE-Grid
Gridded Data
MODIS
Northern Hemisphere
Snow Cover
Snow Water Equivalent
Southern Hemisphere
Special Sensor Microwave/Imager
SSM/I


Data Set Progress
IN WORK


Originating Center
NSIDC_DAAC


Data Center
NSIDC Distributed Active Archive Center    [Information]
Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel
Name: NSIDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


National Snow and Ice Data Center    [Information]
Data Center URL: http://nsidc.org

Data Center Personnel
Name: NSIDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA



Distribution
Distribution_Media: FTP
Distribution_Size: 12 - 40 KB
Distribution_Format: PNG

Distribution_Media: FTP
Distribution_Size: 85 - 104 MB
Distribution_Format: NetCDF


Personnel
MARY J. BRODZIK
Role: INVESTIGATOR
Email: brodzik at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


RICHARD ARMSTRONG
Role: INVESTIGATOR
Phone: +1 (303)-492-6199
Fax: +1 (303)-492-2468
Email: rlax at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES 449 UCB
University of Colorado
City: Boulder
Province or State: Colorado
Postal Code: 80309-0449
Country: USA


MATTHEW H. SAVOIE
Role: INVESTIGATOR
Phone: 303-492-5692
Email: savoie at nsidc.org
Contact Address:
National Snow and Ice Data Center
University of Colorado
CIRES, 449 UCB
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


NSIDC USER SERVICES
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


Publications/References
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 Data Resampled from Boston University Version of Global 1 km Land Cover from MODIS 2001, Version 4. Boulder CO, USA: National Snow and Ice Data Center. Digital Media ftp://sidads.colorado.edu/pub/EASE/Nl.BU-MODIS.tar.gz.

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.

Creation and Review Dates
DIF Creation Date: 2007-12-03
Last DIF Revision Date: 2012-05-14

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