<?xml version="1.0" encoding="ISO-8859-1"?>
<metadata>
  <idinfo>
    <datsetid>
      org.nsidc:g02158
    </datsetid>
    <citation>
      <citeinfo>
        <origin>
          NOHRSC
        </origin>
        <pubdate>
          20040331
        </pubdate>
        <title>
          Snow Data Assimilation System (SNODAS) Data Products at NSIDC
        </title>
        <pubinfo>
          <pubplace>
            Boulder, CO
          </pubplace>
          <publish>
            National Snow and Ice Data Center (NSIDC)
          </publish>
        </pubinfo>
        <onlink>
          http://nsidc.org/data/g02158.html
        </onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>
        This data set contains output from the NOAA National Weather Service&apos;s National Operational  Hydrologic Remote Sensing Center (NOHRSC) Snow Data Assimilation System (SNODAS), beginning 1  October 2003. SNODAS is a modelling and data assimilation system developed by the NOHRSC to  provide the best possible estimates of snow cover and associated variables to support hydrologic modelling and analysis. The aim of SNODAS is to provide a physically consistent framework to integrate  snow data from satellite and airborne platforms, and ground stations with model estimates of snow  cover (Carroll et al. 2001). SNODAS includes procedures to ingest and downscale output from  Numerical Weather Prediction (NWP) models; a physically based, spatially-distributed energy- and  mass-balance snow model; and procedures to assimilate satellite-derived, airborne and ground-based  observations of snow covered area and snow water equivalent. The NOHRSC products available from  NSIDC are gridded data sets for the continential United States at 1-km spatial resolution and 24-hour  temporal resolution.

SNODAS is run each day, with analysts deciding whether or not to use remote sensing and ground  based observations to update the snow water equivalent state in the model. Generally, files are  available from NSIDC within one day of production at NOHRSC.

Data for 2005 through the current year are available via FTP; select Access Data. For data from previous years and subsetting options, please select Subset Data. NSIDC strongly encourages you to register as a  user of this data product. As a registered user, you will be notified of updates and corrections. Please  contact NSIDC User Services to register.
      </abstract>
      <purpose>
        scientific research
      </purpose>
      <documnts>
        <userguid>
          <citeinfo>
            <origin>
              NOHRSC
            </origin>
            <pubdate>
              20040331
            </pubdate>
            <title>
              Snow Data Assimilation System (SNODAS) Data Products at NSIDC
            </title>
            <pubinfo>
              <pubplace>
                Boulder, CO
              </pubplace>
              <publish>
                National Snow and Ice Data Center (NSIDC)
              </publish>
            </pubinfo>
            <onlink>
              http://nsidc.org/data/docs/noaa/g02158_snodas_snow_cover_model/index.html
            </onlink>
          </citeinfo>
        </userguid>
      </documnts>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>
            20031001
          </begdate>
          <enddate>
            Unknown
          </enddate>
        </rngdates>
      </timeinfo>
      <current>
        publication date
      </current>
    </timeperd>
    <status>
      <progress>
        In work
      </progress>
      <update>
        Unknown
      </update>
    </status>
    <spdom>
      <bounding>
        <westbc>
          -124.73
        </westbc>
        <eastbc>
          -66.94
        </eastbc>
        <northbc>
          52
        </northbc>
        <southbc>
          27.93
        </southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>
          NASA Global Change Master Directory (GCMD) Science Keywords
        </themekt>
        <themekey>
          EARTH SCIENCE &gt; Atmosphere &gt; Atmospheric Water Vapor &gt; Sublimation &gt; Blowing snow sublimation
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Atmosphere &gt; Atmospheric Water Vapor &gt; Sublimation &gt; Snow pack sublimation
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Atmosphere &gt; Precipitation &gt; Precipitation Amount &gt; Scaled precipitation  non-snow
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Atmosphere &gt; Precipitation &gt; Precipitation Amount &gt; Scaled precipitation - snow
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Atmosphere &gt; Precipitation &gt; Rain &gt; Liquid precipitation
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow Depth &gt; Snowpack thickness
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow Melt &gt; Snow melt rate
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow Water Equivalent
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow/Ice Temperature &gt; Snowpack average temperature
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow Depth &gt; Snowpack thickness
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow Melt &gt; Snow melt rate
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow Water Equivalent
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow/Ice Temperature &gt; Snowpack average temperature
        </themekey>
      </theme>
      <theme>
        <themekt>
          NASA Global Change Master Directory (GCMD) Platform Keywords
        </themekt>
        <themekey>
          AIRCRAFT
        </themekey>
        <themekey>
          GROUND STATIONS
        </themekey>
        <themekey>
          MODELS
        </themekey>
        <themekey>
          SATELLITES
        </themekey>
      </theme>
      <theme>
        <themekt>
          ISO 19115 Topic Categories
        </themekt>
        <themekey>
          climatologyMeteorologyAtmosphere
        </themekey>
      </theme>
      <theme>
        <themekt>
          None
        </themekt>
        <themekey>
          g02158
        </themekey>
        <themekey>
          Modeling
        </themekey>
        <themekey>
          National Operational Hydrologic Remote Sensing Center
        </themekey>
        <themekey>
          NOAA
        </themekey>
        <themekey>
          NOHRSC
        </themekey>
        <themekey>
          Numerical Weather Prediction
        </themekey>
        <themekey>
          NWP
        </themekey>
        <themekey>
          SNODAS
        </themekey>
        <themekey>
          Snow Cover
        </themekey>
        <themekey>
          SNOw Data Assimilation System
        </themekey>
        <themekey>
          Snow Water Equivalent
        </themekey>
        <themekey>
          SWE
        </themekey>
      </theme>
    </keywords>
    <thelayid>
      <numthlay>
        13
      </numthlay>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Atmosphere &gt; Atmospheric Water Vapor &gt; Sublimation &gt; Blowing snow sublimation
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Atmosphere &gt; Atmospheric Water Vapor &gt; Sublimation &gt; Snow pack sublimation
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Atmosphere &gt; Precipitation &gt; Precipitation Amount &gt; Scaled precipitation  non-snow
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Atmosphere &gt; Precipitation &gt; Precipitation Amount &gt; Scaled precipitation - snow
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Atmosphere &gt; Precipitation &gt; Rain &gt; Liquid precipitation
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow Depth &gt; Snowpack thickness
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow Melt &gt; Snow melt rate
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow Water Equivalent
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Snow/Ice Temperature &gt; Snowpack average temperature
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow Depth &gt; Snowpack thickness
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow Melt &gt; Snow melt rate
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow Water Equivalent
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Snow/Ice Temperature &gt; Snowpack average temperature
          </themekey>
        </theme>
      </layrname>
    </thelayid>
    <accconst>
      None
    </accconst>
    <useconst>
      None
    </useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>
            NSIDC User Services
          </cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>
            mailing
          </addrtype>
          <address>
            National Snow and Ice Data Center
          </address>
          <address>
            CIRES, 449 UCB
          </address>
          <address>
            University of Colorado
          </address>
          <city>
            Boulder
          </city>
          <state>
            CO
          </state>
          <postal>
            80309-0449
          </postal>
          <country>
            USA
          </country>
        </cntaddr>
        <cntvoice>
          (303) 492-6199
        </cntvoice>
        <cntfax>
          (303) 492-2468
        </cntfax>
        <cntemail>
          nsidc@nsidc.org
        </cntemail>
      </cntinfo>
    </ptcontac>
  </idinfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>
            National Oceanic and Atmospheric Administration
          </cntorg>
          <cntper>
            NSIDC NOAA USER SERVICES
          </cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>
            mailing
          </addrtype>
          <address>
            National Snow and Ice Data Center
          </address>
          <address>
            CIRES, 449 UCB
          </address>
          <address>
            University of Colorado
          </address>
          <city>
            Boulder
          </city>
          <state>
            CO
          </state>
          <postal>
            80309-0449
          </postal>
          <country>
            USA
          </country>
        </cntaddr>
        <cntvoice>
          +1 (303) 492-6199
        </cntvoice>
        <cntfax>
          +1 (303) 492-2468
        </cntfax>
        <cntemail>
          nsidc@nsidc.org
        </cntemail>
      </cntinfo>
    </distrib>
    <resdesc>
      g02158
    </resdesc>
    <distliab>
      NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    </distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>
            ASCII text files
          </formname>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>
                  ftp://sidads.colorado.edu/DATASETS/NOAA/G02158/
                </networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>
        None
      </fees>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>
      20070822
    </metd>
    <metc>
      <cntinfo>
        <cntperp>
          <cntper>
            NSIDC NOAA USER SERVICES
          </cntper>
          <cntorg>
            National Oceanic and Atmospheric Administration
          </cntorg>
        </cntperp>
        <cntaddr>
          <addrtype>
            mailing
          </addrtype>
          <address>
            National Snow and Ice Data Center
          </address>
          <address>
            CIRES, 449 UCB
          </address>
          <address>
            University of Colorado
          </address>
          <city>
            Boulder
          </city>
          <state>
            CO
          </state>
          <postal>
            80309-0449
          </postal>
          <country>
            USA
          </country>
        </cntaddr>
        <cntvoice>
          +1 (303) 492-6199
        </cntvoice>
        <cntfax>
          +1 (303) 492-2468
        </cntfax>
        <cntemail>
          nsidc@nsidc.org
        </cntemail>
      </cntinfo>
    </metc>
    <metstdn>
      FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata
    </metstdn>
    <metstdv>
      FGDC-STD-012-2002
    </metstdv>
  </metainfo>
  
  
  
  
  
  
</metadata>
