<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.7.1.xsd">
  <Entry_ID>NSIDC-0278</Entry_ID>
  <Entry_Title>SMEX02 Land Surface Information: Soils Database</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Douglas Miller</Dataset_Creator>
    <Dataset_Title>SMEX02 Land Surface Information: Soils Database</Dataset_Title>
    <Dataset_Release_Date>2006-02-10</Dataset_Release_Date>
    <Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place>
    <Dataset_Publisher>NSIDC: National Snow and Ice Data Center</Dataset_Publisher>
    <Online_Resource>http://nsidc.org/data/nsidc-0278.html</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Technical Contact</Role>
    <First_Name>NSIDC</First_Name>
    <Last_Name>User Services</Last_Name>
    <Email>nsidc@nsidc.org</Email>
    <Phone>1 303 492-6199 x</Phone>
    <Fax>1 303  492-2468 x</Fax>
    <Contact_Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>CIRES, 449 UCB</Address>
      <Address>University of Colorado</Address>
      <City>Boulder</City>
      <Province_or_State>CO</Province_or_State>
      <Postal_Code>80309-0449</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>Douglas</First_Name>
    <Last_Name>Miller</Last_Name>
    <Contact_Address>
      <Address>Pennsylvania State University</Address>
      <Address>2217 Earth-Engineering Sciences Bldg.</Address>
      <City>University Park</City>
      <Province_or_State>PA</Province_or_State>
      <Postal_Code>16802</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Agriculture</Topic>
    <Term>Soils</Term>
    <Variable_Level_1>Soil Classification</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Human Dimensions</Topic>
    <Term>Boundaries</Term>
    <Variable_Level_1>Boundary Surveys</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Human Dimensions</Topic>
    <Term>Land Use/Land Cover</Term>
    <Variable_Level_1>Land Use Classes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Land Surface</Topic>
    <Term>Land Use/Land Cover</Term>
    <Variable_Level_1>Land Use Classes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Land Surface</Topic>
    <Term>Soils</Term>
    <Variable_Level_1>Soil Classification</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>Imagery/Base Maps/Earth Cover</ISO_Topic_Category>
  <Keyword>Aerial Photography</Keyword>
  <Keyword>AMSR-E</Keyword>
  <Keyword>Ancillary Data</Keyword>
  <Keyword>Hydrology</Keyword>
  <Keyword>Landuse classification</Keyword>
  <Keyword>Maps</Keyword>
  <Keyword>SMEX</Keyword>
  <Keyword>Soil Moisture</Keyword>
  <Sensor_Name>
    <Short_Name>CAMERAS</Short_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>AERIAL PHOTOGRAPHS</Short_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>MAPS</Short_Name>
  </Source_Name>
  <Temporal_Coverage>
    <Start_Date>2002-06-25</Start_Date>
    <Stop_Date>2002-07-12</Stop_Date>
  </Temporal_Coverage>
  <Data_Set_Progress>complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>41.69459</Southernmost_Latitude>
    <Northernmost_Latitude>42.73229</Northernmost_Latitude>
    <Westernmost_Longitude>-93.84162</Westernmost_Longitude>
    <Easternmost_Longitude>-93.16104</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>NORTH AMERICA</Location_Type>
    <Location_Subregion1>UNITED STATES OF AMERICA</Location_Subregion1>
  </Location>
  <Project>
    <Short_Name>ISMEX</Short_Name>
    <Long_Name>Iowa Soil Moisture Experiment</Long_Name>
  </Project>
  <Project>
    <Short_Name>SMEX02</Short_Name>
    <Long_Name>Soil Moisture Experiments in 2002</Long_Name>
  </Project>
  <Quality>With the exception of Polk county, the source of all soil property attributes is the Iowa Soil Properties and Interpretations Database (ISPAID). Soil Survey Geographic Database (SSURGO, version 2) and Map Unit Interpretation Record (MUIR) databases were used to populate a selected set of soil property attributes for Polk county. Due to dissimilarity between these data sets, attribute values for Polk county may differ from those of similar soils observed in neighboring counties. 

Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of soils of other taxonomic classes. Consequently, every map unit is made up of the soil or soils for which it is named and some soils that belong to other taxonomic classes. Please see 'iowa_soils_metadata.pdf' for more details.</Quality>
  <Data_Set_Language>English</Data_Set_Language>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC_DAAC</Short_Name>
      <Long_Name>NASA DAAC at the National Snow and Ice Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/daac/index.html</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC</Short_Name>
      <Long_Name>National Snow and Ice Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>FTP</Distribution_Media>
    <Distribution_Size>293 MB</Distribution_Size>
    <Distribution_Format>ESRI Shapefiles</Distribution_Format>
  </Distribution>
  <Summary>The Soil Moisture Experiment 2002 (SMEX02) took place in Ames, Iowa USA between 25 June and 12 July 2002. The NASA Land Surface Hydrology Data Archive maintains an archive of soils and land cover characteristics for SMEX02. SMEX02 studies are designed to evaluate the accuracy of AMSR-E soil moisture data specific to the SMEX02 study areas, and SMEX02 provided the unique opportunity to test microwave soil moisture retrieval over agricultural land cover. The Soils Database includes Environmental Systems Research Institute (ESRI) shapefiles containing geographic information such as railroads, roads, and stream locations; drainage features; political boundaries; and soil classifications. Data for the following 10 Iowa counties are included in this data set: Boone, Dallas, Franklin, Hamilton, Hardin, Jasper, Marshall, Polk, Story, and Wright. These data were created by appending existing county digital soils data provided by the Iowa Cooperative Soil Survey (ICCS) and clipping them by the SMEX02 project area boundary; thus, the dates of data acquisition are highly variable. The entire data set is 293 MB. Data are available via FTP.

These data were collected as part of a validation study for the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E). AMSR-E is a mission instrument launched aboard NASA's Aqua Satellite on 04 May 2002. AMSR-E validation studies linked to SMEX are designed to evaluate the accuracy of AMSR-E soil moisture data. Specific validation objectives include assessing and refining soil moisture algorithm performance; verifying soil moisture estimation accuracy; investigating the effects of vegetation, surface temperature, topography, and soil texture on soil moisture accuracy; and determining the regions that are useful for AMSR-E soil moisture measurements.</Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/amsre</URL>
    <Description>AMSR-E at NSIDC</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/amsre/</URL>
    <Description>AMSR-E at NSIDC</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/amsr_validation/</URL>
    <Description>AMSR-E Validation Data</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/amsr_validation/</URL>
    <Description>AMSR-E Validation Site</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://www.cei.psu.edu/nasa_lsh/index.html</URL>
    <Description>NASA Land Surface Hydrology/Soil Moisture Field Experiments Data Archive</Description>
  </Related_URL>
  <Metadata_Name>CEOS IDN DIF</Metadata_Name>
  <Metadata_Version>9.7</Metadata_Version>
  <DIF_Creation_Date>2006-02-10</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2009-10-08</Last_DIF_Revision_Date>
  <DIF_Revision_History>Revised the AMSR-E boilerplate text in the summary section.</DIF_Revision_History>
</DIF>
