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<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>AE_Land3</Entry_ID>
  <Entry_Title>AMSR-E/Aqua Daily L3 Surface Soil Moisture, Interpretive Parameters, &amp; QC EASE-Grids</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Njoku, E. G. </Dataset_Creator>
    <Dataset_Title>AMSR-E/Aqua Daily L3 Surface Soil Moisture, Interpretive Parameters, &amp; QC EASE-Grids</Dataset_Title>
    <Dataset_Release_Date>2004-01-01updated 2008 for Version 2</Dataset_Release_Date>
    <Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place>
    <Dataset_Publisher>NSIDC: National Snow and Ice Data Center</Dataset_Publisher>
    <Version>2</Version>
    <Online_Resource>http://nsidc.org/data/ae_land3.html</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>Eni</First_Name>
    <Middle_Name>G.</Middle_Name>
    <Last_Name>Njoku</Last_Name>
    <Email>njoku@lor.jpl.nasa.gov</Email>
    <Phone>1 818 354-3693 </Phone>
    <Contact_Address>
      <Address>California Institute of Technology</Address>
      <Address>Jet Propulsion Laboratory</Address>
      <Address>M/S 300-233</Address>
      <Address>Jet Propulsion Laboratory</Address>
      <Address>California Institute of Technology</Address>
      <Address>4800 Oak Grove Drive</Address>
      <City>Pasadena</City>
      <Province_or_State>CA</Province_or_State>
      <Postal_Code>91109-8099</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <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>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Biosphere</Topic>
    <Term>Vegetation</Term>
    <Variable_Level_1>Plant Characteristics</Variable_Level_1>
    <Detailed_Variable>Vegetation Water Content</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Land Surface</Topic>
    <Term>Soils</Term>
    <Variable_Level_1>Soil Moisture/Water Content</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Spectral/Engineering</Topic>
    <Term>Microwave</Term>
    <Variable_Level_1>Brightness Temperature</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Spectral/Engineering</Topic>
    <Term>Microwave</Term>
    <Variable_Level_1>Microwave Imagery</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>Climatology/Meteorology/Atmosphere</ISO_Topic_Category>
  <Keyword>AE_Land3</Keyword>
  <Keyword>AMSR-E</Keyword>
  <Keyword>Aqua</Keyword>
  <Keyword>BRIGHTNESS TEMPERATURES</Keyword>
  <Keyword>DAAC</Keyword>
  <Keyword>EASE-Grid</Keyword>
  <Keyword>EOSDIS</Keyword>
  <Keyword>EOS PM-1</Keyword>
  <Keyword>Hydrology</Keyword>
  <Keyword>Imagery</Keyword>
  <Keyword>land surface temperatures</Keyword>
  <Keyword>NASA</Keyword>
  <Keyword>NSIDC</Keyword>
  <Keyword>Passive Microwave Radiation</Keyword>
  <Keyword>Radiance</Keyword>
  <Keyword>Remote Sensing</Keyword>
  <Keyword>Soil Water Content</Keyword>
  <Keyword>Tbs</Keyword>
  <Keyword>Vegetation Status</Keyword>
  <Keyword>Vegetation Water Content</Keyword>
  <Sensor_Name>
    <Short_Name>AMSR-E</Short_Name>
    <Long_Name>Advanced Microwave Scanning Radiometer-EOS</Long_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>AQUA</Short_Name>
    <Long_Name>Earth Observing System, AQUA</Long_Name>
  </Source_Name>
  <Temporal_Coverage>
    <Start_Date>2002-06-18</Start_Date>
  </Temporal_Coverage>
  <Data_Set_Progress>in work</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>-89.24</Southernmost_Latitude>
    <Northernmost_Latitude>89.24</Northernmost_Latitude>
    <Westernmost_Longitude>-180</Westernmost_Longitude>
    <Easternmost_Longitude>180</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>GEOGRAPHIC REGION</Location_Category>
    <Location_Type>GLOBAL</Location_Type>
  </Location>
  <Data_Resolution>
    <Latitude_Resolution>25 km</Latitude_Resolution>
    <Longitude_Resolution>25 km</Longitude_Resolution>
    <Temporal_Resolution>1 day</Temporal_Resolution>
  </Data_Resolution>
  <Project>
    <Short_Name>EOS</Short_Name>
    <Long_Name>Earth Observing System</Long_Name>
  </Project>
  <Quality>Each HDF-EOS file contains core metadata with QA metadata flags that are set by the Science Investigator-led Processing System (SIPS) at the Global Hydrology and Climate Center (GHCC) prior to delivery to NSIDC. A separate metadata file in XML format is also delivered to NSIDC with the HDF-EOS file; it contains the same information as the core metadata. Three levels of quality assessment (QA) are conducted with the AMSR-E Level 2 and 3 products: automatic, operational, and science QA. If a product does not fail QA, it is ready to be used for higher-level processing, browse generation, active science QA, archive, and distribution. If a granule fails QA, SIPS does not send the granule to NSIDC until it is reprocessed. Level-3 products that fail QA are never delivered to NSIDC (Conway 2002).</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>60 MB</Distribution_Size>
    <Distribution_Format>HDF-EOS</Distribution_Format>
  </Distribution>
  <Reference>Conway, D. 2002. Advanced Microwave Scanning Radiometer - EOS Quality Assurance Plan. Huntsville, AL: Global Hydrology and Climate Center.

Njoku, Eni G, T. Chan, W. Crosson, and A. Limaye. 2004. Evaluation of the AMSR-E Data Calibration Over Land. Italian Journal of Remote Sensing 29 (4): 19 - 37.

Njoku, Eni G., T. L. Jackson, V. Lakshmi, T. Chan, and S.V. Nghiem. 2003. Soil Moisture Retrieval from AMSR-E. IEEE Transactions on Geoscience and Remote Sensing 41 (2): 215-229.  Njoku, Eni G, T. Chan, W. Crosson, and A. Limaye. 2004. Evaluation of the AMSR-E Data Calibration Over Land. Italian Journal of Remote Sensing. 30/31: 19-37.

Njoku, Eni G. and T. K. Chan, 2005. Vegetation and Surface Roughness Effects on AMSR-E Land Observations. Remote Sensing of Environment (in press). Njoku, Eni G. 1999. AMSR Land Surface Parameters. Algorithm Theoretical Basis Document, Version 3.0. Pasadena, CA, USA: NASA Jet Propulsion Laboratory.</Reference>
  <Summary>The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA Earth Observing System (EOS) Aqua satellite provides global passive microwave measurements of terrestrial, oceanic, and atmospheric variables for the investigation of water and energy cycles. Soil moisture and other land surface variables are key variables in understanding land surface hydrology and in modeling ecosystems, weather, and climate.

This gridded Level-3 land surface product (AE_Land3) includes daily measurements of surface soil moisture and vegetation/roughness water content interpretive information, as well as brightness temperatures and quality control variables. Ancillary data include time, geolocation, and quality assessment. Input brightness temperature data, corresponding to a 56 km mean spatial resolution, are resampled to a global cylindrical 25 km Equal-Area Scalable Earth Grid (EASE-Grid) cell spacing. Data are stored in HDF-EOS format, and are available from 19 June 2002 to the present via FTP.</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 Data 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/index.html</URL>
    <Description>AMSR-E Web site at NSIDC</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://wwwghcc.msfc.nasa.gov/AMSR/</URL>
    <Description>NASA AMSR-E Web site</Description>
  </Related_URL>
  <IDN_Node>
    <Short_Name>USA/NASA</Short_Name>
  </IDN_Node>
  <Metadata_Name>CEOS IDN DIF</Metadata_Name>
  <Metadata_Version>9.7</Metadata_Version>
  <DIF_Creation_Date>2004-01-01</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2013-04-02</Last_DIF_Revision_Date>
  <DIF_Revision_History>Fixed citation.</DIF_Revision_History>
</DIF>
