Snow Data Assimilation System (SNODAS) Data Products at NSIDCEntry ID: G02158
Abstract: Notice: If you are having difficulties subsetting SNODAS data via Polaris, please contact "mailto:email@example.com" firstname.lastname@example.org.
This data set contains output from the NOAA National Weather Service's National Operational Hydrologic Remote Sensing Center (NOHRSC) SNOw Data Assimilation System (SNODAS). SNODAS is a modeling and data assimilation system developed by NOHRSC to provide the best ... possible estimates of snow cover and associated parameters to support hydrologic modeling and analysis. The aim of SNODAS is to provide a physically consistent framework to integrate snow data from satellite, airborne platforms, and ground stations with model estimates of snow cover (Carroll et al. 2001). SNODAS includes procedures to ingest and downscale output from the Numerical Weather Prediction (NWP) models, and to simulate snowcover using a physically based, spatially-distributed energy- and mass-balance snow model. SNODAS also includes procedures to assimilate satellite-derived, airborne, and ground-based observations of snow covered area and Snow Water Equivalent (SWE). These data are not suitable for snow fall events or totals for specific regions. For snow fall data, please see the state climatology reports for a particular state. These are gridded data sets for the continental United States at 1 km spatial resolution and 24 hour temporal resolution. Data are stored in flat binary 16-bit signed integer big-endian format with header and metadata files, and are available from 1 October 2003 to present via FTP.
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: NOHRSC
Dataset Title: Snow Data Assimilation System (SNODAS) Data Products at NSIDC
Dataset Release Date: 2004-03-31
Dataset Release Place: Boulder, CO
Dataset Publisher: National Snow and Ice Data Center (NSIDC)Online Resource: http://nsidc.org/data/g02158.html
Start Date: 2003-10-01
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > SUBLIMATION > BLOWING SNOW SUBLIMATION
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > SUBLIMATION > SNOW PACK SUBLIMATION
ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT > SCALED PRECIPITATION NON-SNOW
ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT > SCALED PRECIPITATION - SNOW
ATMOSPHERE > PRECIPITATION > RAIN > LIQUID PRECIPITATION
CRYOSPHERE > SNOW/ICE > SNOW DEPTH > SNOWPACK THICKNESS
CRYOSPHERE > SNOW/ICE > SNOW MELT > SNOW MELT RATE
CRYOSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT
CRYOSPHERE > SNOW/ICE > SNOW/ICE TEMPERATURE > SNOWPACK AVERAGE TEMPERATURE
TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW DEPTH > SNOWPACK THICKNESS
TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW MELT > SNOW MELT RATE
TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT
TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW/ICE TEMPERATURE > SNOWPACK AVERAGE TEMPERATURE
ISO Topic Category
Data Set Progress
Distribution Media: ftp
Distribution Size: 2 MB - 25 MB for daily data files
Distribution Format: ASCII text files
National Weather Service National Operational Hydrologic Remote Sensing Center 1735 Lake Drive W.
Province or State: MN
Postal Code: 55317
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
Barrett, Andy. 2003. National Operational Hydrologic Remote Sensing Center Snow Data Assimilation System (SNODAS) Products at NSIDC. NSIDC Special Report 11. Boulder, CO USA: National Snow and Ice Data Center. 19 pp.
Carroll, T., D. Cline, G. Fall, A. Nilsson, L. Li, and A. Rost. 2001. NOHRSC Operations and the Simulation of Snow Cover Properties for the Conterminous U.S. Proceedings of the 69th Annual Meeting of the Western Snow Conference, pp. 1-14.
Carroll, T. 2005. Overview of the Center's Web Site and Products . National Operational Hydrologic Remote Sensing Center, 15 pp.
Jordan, R. 1990. User's guide for USA-CRREL one-dimensional snow temperature model (SNTHERM.89). USA Cold Regions Research and Engineering Laboratory (CRREL), 18 pp.
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2004-03-10
Last DIF Revision Date: 2013-11-25