Global Snow-Water-Equivalent Depth Coefficient-of-Variation Classification  View Catalog Page Entry ID
ARCSS138
Summary
This data set provides a global distribution of nine subgrid snow-depth-variability categories and a coefficient of variation applicable to each category, as the result of the Subgrid SNOW Distribution (SSNOWD) submodel that defines subgrid snow-depth and snow-cover variability. This data set provides the distribution of those nine categories and their coefficient-of-variation values on a global, 2.5 arc-min latitude-longitude (approximately 5-km) grid. The time period covered is 1 January 1994 through 1 January 2004.
The SSNOWD submodel was formulated to improve the depiction of autumn through spring land-atmosphere interactions and feedbacks within global weather, climate, and hydrologic models. From both atmospheric and hydrologic perspectives, the subgrid snow-depth distribution is an important quantity to account for within large-scale models. In the natural system, these subgrid snow-depth distributions are largely responsible for the mosaic of snow-covered and snow-free areas that develop as the snow melts, and the impacts of these fractional areas must be quantified in order to realistically simulate grid-averaged surface fluxes. SSNOWD's formulation incorporates observational studies showing that snow distributions can be described by a lognormal distribution and the snow-depth coefficient-of-variation (CV). Using an understanding of the physical processes that lead to these observed snow-depth variations, a global distribution of nine subgrid snow-depth-variability categories was developed, and coefficient-of-variation values were assigned to each category based on published measurements. Data are in binary format.
Geographic Coverage
Spatial Coordinates:
N: 90°
S: -90°
E: 180°
W: -180°
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Data Set Citation
Dataset Creator: Glen E. Liston
Dataset Title: Global Snow-Water-Equivalent Depth Coefficient-of-Variation Classification
Dataset Release Date: 2005-01-20
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/arcss138.html
Temporal Coverage
Start Date: 1994-01-01
Stop Date: 2004-01-01
Location Keywords
- GEOGRAPHIC REGION GLOBAL
- GEOGRAPHIC REGION GLOBAL LAND
Science Keywords
- Cryosphere Snow/Ice Snow Cover
- Cryosphere Snow/Ice Snow Depth
- Cryosphere Snow/Ice Snow Melt
- Cryosphere Snow/Ice Snow Water Equivalent
- Terrestrial Hydrosphere Snow/Ice Snow Cover
- Terrestrial Hydrosphere Snow/Ice Snow Depth
- Terrestrial Hydrosphere Snow/Ice Snow Melt
- Terrestrial Hydrosphere Snow/Ice Snow Water Equivalent
Ancillary Keywords
- ADCC
- ARCSS138
- Arctic System Science Data Coordination Center
- ATLAS
- FWI
- LAII
- National Science Foundation
- NSF
- OPP-0229973
- OPP-9415386
- OPP-9732077
- Climatology/Meteorology/Atmosphere
Project
- ARCSS/LAII Arctic System Science/Land-Atmosphere-Ice Interaction
- ARCSS/LAII/ATLAS Arctic System Science/LAII/Arctic Transitions in the Land-Atmosphere System
Data Center
National Snow and Ice Data Center
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@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
NSIDC Arctic System Science Data Coordination Center
Data Center URL: http://nsidc.org/arcss/
Data Center Personnel
Name: NSIDC ARCSS User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@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: 2.2 MB
Distribution Format: Binary
Personnel
Glen E. Liston
Role: INVESTIGATOR
Phone: 1 970 491-7473
Email: liston@tachu.atmos.colostate.edu
Contact Address:
- Department of Atmospheric Science
- Colorado State University
City: Fort Collins
Province or State: CO
Postal Code: 80523
NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@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
Related URL
VIEW RELATED INFORMATION
Global Seasonal Snow Classification System
Reference
Liston, G. E. 2004. Representing subgrid snow cover heterogeneities in regional and global models. Journal of Climate 17(6): 1381-97.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2005-01-20
Last DIF Revision Date: 2011-09-02
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