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Description

This data set is a daily gridded terrestrial snow water equivalent (SWE) dataset based on five component SWE products: 1) GlobSnow combined SWE product (passive microwave/ground-based weather station, version 2) at http://www.globsnow.info. 2) ERA-Interim/Land reanalysis SWE product at http://apps.ecmwf.int/datasets/. 3) MERRA reanalysis SWE product at http://gmao.gsfc.nasa.gov/pubs/docs/Reichle541.pdf. 4) Crocus SWE data set (Brun et al. 2013): output from the Crocus snowpack model, driven by ERA-Interim meteorology (https://doi.org/10.1175/JHM-D-12-012.1). 5) GLDAS SWE product (version 2): Rodell et al. 2004 (https://doi.org/10.1175/BAMS-85-3-381); Rodell and Beaudoing 2013 (https://doi.org/10.5067/0JNJQ8ZDZRBA).

Version Description

Version 2 includes 32 new files: 30 ".spread.nc" files which provide the difference in meters SWE from the highest and lowest observation of the component data sets; two climatological files. The climatological files indicate the climatological SWE or climatological spread in SWE for the 30-year period. In Version 1, December 31 was incorrectly dropped during a leap year. The Version 2 data corrected this by removing Feb. 29 from all years and reprocessing. Other changes to the data and metadata include meeting CF (Climate and Forecast) conventions.

Product Summary

Platforms
Aqua ,
DMSP ,
Nimbus-7 ,
TIROS ,
Terra
Instruments
AMSR-E ,
SSM/I ,
SMMR ,
TOVS ,
MODIS
Spatial Extent

N: 90 S: 0 E: 180 W: -180

Spatial Resolution
1 Decimal Degrees x 1 Decimal Degrees
Location
NORTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
1981-01-01 to 2010-12-31
Temporal Resolution
1 Day
Concept ID
C1386256679-NSIDCV0
Data State
COMPLETE
Number of Files/Granules
0
Processing Level
Not provided
Published
Science Keywords
Snow Water Equivalent

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Mudryk, Lawrence, & Derksen, Chris. (2017). CanSISE Observation-Based Ensemble of Northern Hemisphere Terrestrial Snow Water Equivalent, Version 2 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/96LTNIIKJ7VD Date Accessed: 2026-11-12

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